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Abstract
This article examines the impact of a large number of fundamental
and individual stock characteristic variables on stock returns.
We identify the variables that have generated the highest and most
consistent return payoffs over the past decade, while controlling
for the influence of the other variables. In short, our purpose
is to determine what has worked on Bay Street.
While it is difficult to make definitive conclusions regarding
why stock returns behave as they do, several results from our study
stand out. The most statistically powerful and stable predictors
of stock returns in Canada over the last decade have been 12-month
price momentum, one-month reversals, operating margin, the number
of earnings estimate revisions, and stock price. These results demonstrate
the importance of technical indicators, profitability measures and
stock liquidity on Canadian stock returns. Cash flow yield has also
been very important, particularly in 1994 and 1996. Risk variables,
when significant, often displayed a negative relationship with stock
returns, contrary to what one might expect, while traditional "value"
measures varied in sign and levels of significance. Finally, the
influence of a number of variables has varied through time and across
up and down markets. In particular, we found that liquidity, value
and growth measures were more important during down markets, while
earnings estimates and profitability factors were more important
during up markets.
Introduction
Virtually all money managers analyze company fundamentals and individual
stock characteristics to some extent when making their investment
decisions. Most of them tend to focus on a small set of these variables
where the subset depends on the manager's investment style or, more
generally, on their beliefs regarding which specific variables actually
work on Bay Street. In addition, the academic and practitioner literatures
are now filled with articles that report excess returns by forming
portfolios based on various company and stock specific factors. The
most widely recognized of these factors are firm size, the book-value-to-price
ratio, and price momentum.1
A recent article by Haugen and Baker (hereafter HB) appearing
in the Journal of Financial Economics (1996) rated a large number
of these factors based on their relationship with U.S. stock returns
over the 1979 to 1993 period. HB found the following twelve factors,
in order of importance had the greatest affect on stock returns
(the sign in brackets indicate the nature of the relationship):
one-month excess return (-); 12-month excess return (+); trading
volume/market cap (-); two-month excess return (-); earnings to
price (+); return on equity (+); book to price (+); trading volume
trend (-); six-month excess return (+); cash flow to price (+);
and, variability in cash flow to price (-). HB also confirm the
importance of these variables in explaining stock returns for samples
from Japan, the United Kingdom, France and Germany over the 1985
to 1993 period.
This article attempts to determine which of the many possible
company fundamental and stock characteristic variables have generated
the highest and most consistent return payoffs for Canadian stocks
over the past ten years, while controlling for the influence of
each of the other variables. In short, the purpose of this article
is to determine what has worked on Bay Street. Notice that the previous
sentence said what worked on Bay Street. Any inference about what
will work on Bay Street in the future requires the assumption that
what has worked on Bay Street correlates highly with what will work
on Bay Street. Nevertheless, if what has worked on Bay Street is
based on rational economic and investment theory, or is based on
inherent and consistent human biases, then the assumption that what
worked on Bay Street correlates highly with what will work in the
future may be well founded. We leave this for the reader to decide.
The Data
The sample for this study covers the 10-year period from January 1989
to December 1998. This time period includes a recession, bear markets,
a stock market crash, a couple of interest rate shocks, extreme bull
markets, and some periods of extreme volatility. Thus, it includes
most of the conditions that are experienced in the Canadian equity
market.
The data is derived from two sources. The first data source is
the Standard & Poor's COMPUSTAT database. All fundamental and market
data is extracted from COMPUSTAT. The data is monthly in frequency,
although only fiscal year fundamental data is used. A minimum five-month
accounting release lag is assumed, which is relatively conservative
since most TSE-listed companies release financial statement information
within three months of their fiscal year-end. In fact, the Ontario
Securities Commission requires such information be released within
140 days after the company fiscal year end. For example, if a company
has a December fiscal year end, the fundamental financial data is
assumed to be observable at the end of May, and is available for
use by investors at the beginning of June. Market data such as stock
prices, returns, trading volume, and market capitalization is available
on a monthly basis.
Unfortunately, the Canadian COMPUSTAT database is survivorship
biased as it only includes companies that are operating as of the
date the data is extracted from the database. This means that all
companies that merged, were taken over, or went bankrupt during
the sample period are not included in the analysis. As a result,
the sample does not include the high average returns generated from
merged or taken-over companies, or the low average returns generated
by firms that went bankrupt. This could cause small biases in some
of our results. For example, we would expect that many companies
in distress would have high levels of risk and be classified as
value stocks according to traditional measures. Since our sample
excludes the distressed companies that go bankrupt, and includes
only those distressed firms that survive, our results may attenuate
a positive relationship between returns and these two types of factors.
The second data source for our study is the I/B/E/S historical
earnings estimate database. Companies in the COMPUSTAT universe
are matched to the companies in the I/B/E/S universe. All consensus
earnings estimates, earnings estimate revisions, and earnings surprises
are derived from I/B/E/S. This data is also monthly in frequency
and is stored by I/B/E/S in the month that the data is available
for use by the public. In particular, the I/B/E/S database records
all earnings estimates available on the third Thursday of each month,
with those being released after the third Thursday being recorded
in the following month. Thus, there is no need to assume an arbitrary
reporting lag since it is already incorporated in the data. The
COMPUSTAT database coverage of Canada is superior to that of I/B/E/S
and thus some companies included in this study will not have earnings
estimate data, or their associated variables.
To mitigate some of the biases associated with this type of research,
certain minimum requirements are placed on companies before they
are included in the sample. In each month, only those firms that
trade on the Toronto Stock Exchange with a trailing three-month
average market capitalization greater than $50 million, a stock
price greater than $3, and a monthly trading volume greater than
$0.5 million are included in the sample. These screens ensure that
the companies examined are of reasonable size and liquidity throughout
the entire sample period.2 The impact of outlying data
points on the analysis is minimized by performing a number of data
cleaning routines and truncating the outliers.3
In order to maximize the number of companies in the sample, the
only data requirements for a firm to be included in the sample are
that each firm must possess a month-end stock price for the previous
month and possess a trailing earnings figure for the most recently
completed fiscal year. All other missing fundamental and market
data points are replaced with the cross-sectional mean value for
that fundamental or market variable. In this way, the companies
with some missing data points remain in the sample, but get no "credit"
for a better or worse score on that variable. In addition, companies
with less than two I/B/E/S earnings estimates are captured by an
analyst coverage dummy variable and all their earnings estimate
factors are coded as zero. In this way, companies without analyst
coverage remain in the sample, but get only average credit relative
to firms with analyst coverage.
We examine the majority of fundamental and stock characteristics
typically used to explain stock returns. These were compiled from
a review of the academic and practitioner literature, and through
conversations with analysts and money managers. Specifically, the
study examines 59 distinct fundamental and market-based factors,
while controlling for 11 economic sectors. The identity and definition
of each variable is listed in the Appendix.
The Methodology
The objective of this study is to determine which of the many possible
fundamental and individual stock related company factors have predicted
stock returns over the past 10 years. This requires an estimate of
the average payoff to each of the firm specific factors. More importantly,
it requires a normalized statistical measure of the importance of
each factor so that they can be ranked from highest to lowest. This
will enable us to determine what has worked on Bay Street.
Many researchers have examined the impact of variables thought
to have predictive power for stock returns in isolation through
the use of univariate regressions, correlation coefficients, and/or
profitability analyses. However, these approaches have limitations
because many variables simultaneously influence stock returns, and
many of them capture overlapping pieces of information. To account
for the interdependencies of these variables, we perform pooled
multivariate cross-sectional regressions using ordinary least squares.
The multivariate approach we use allows us to determine which factors
are the most important, after accounting for the presence of the
other factors in existence at that time, and enables us to rank
the factors in terms of their true impact on stock returns.
The dependent variable of the factor payoff regressions is monthly
excess stock returns, defined as the difference between the total
return of a stock and the 90-day Government of Canada Treasury Bill
yield. The independent variables are the 59 fundamental and market
related variables listed in the Appendix, as well as 11 sector dummy
variables that jointly serve as the regression intercept. The independent
(fundamental and market related) variables are "demeaned" each month,
with respect to the monthly cross-sectional average for that variable
in order to account for differences in the absolute level of these
variables through time. In addition, all the fundamental and market
variables are lagged such that they are observable by all investors
at the end of the month prior to the cross section of stock returns
being explained. The estimated regression coefficients are the best
estimate of the payoff in return to each company or stock characteristic
while holding constant all the other characteristics during the
regression period. The payoffs are interpreted as the average amount
of monthly stock return attributable to a unit of exposure to each
of the specific factors over the sample period of the regression.
The fact that the payoff of each company and stock characteristic
is estimated while controlling for all the other possible factors
is what enables us to determine what has truly worked on Bay Street.
For example, there is now a lot of evidence emanating from the U.S.
that the book to price ratio is strongly and positively related
to future stock returns. However, it is possible that this effect
is a result of changes in stock price only, or it may be due to
other correlated factors that measure a similar company attribute
such as earnings yield or the sales to price ratio. Another possibility
is that the book to price ratio effect is a result of a subset of
high book to price stocks that actually have, for example, strong
profitability and momentum characteristics. It may be these characteristics,
not the high book to price characteristic, which is actually responsible
for the observed higher returns. Our multi-factor methodology determines
whether the book to price ratio is important while controlling all
other factors including stock price, earnings yield, sales to price
ratio, profitability, and momentum.
While it is informative to determine the average return payoffs
to each company and stock characteristic, it is more interesting
to determine which characteristics are the most important in determining
Canadian stock returns. To do this, a normalized statistical measure
of significance or importance is required. The regression coefficient
t-statistic provides such a measure of statistical importance and
thus provides a basis for ranking the factor payoffs from highest
to lowest. The t-statistic captures not only the mean payoff to
each factor, but also the consistency to which it provides the stock
returns over the sample period.
Three caveats regarding this methodology should be noted. First,
a number of the fundamental and market factors tested in this article
are somewhat correlated, introducing a degree of multicollinearity
into the factor regressions. Multicollinearity can cause instability
in the factor payoff estimates and bias the magnitude of the t-statistics
for the correlated factors. The list of included factors was chosen
to balance the risk of multicollinearity with the objective of determining
what has actually worked on Bay Street, given the effect of all
the other possible factors that investors may consider when pricing
Canadian stocks.4 Second, while the company fundamental
and stock characteristic factors are lagged such that they are observable
by all investors at the beginning of the month for which the return
is forecasted, the regressions are estimated over the full sample
period thereby using all the historical data. That is, this analysis
is in-sample and only captures what has happened during the sample
period given the sample itself. Third, this article is by definition
a data-mining exercise. The methodology simply mines the data using
as many fundamental and market factors as possible that have appeared
in the literature or are talked about by professional money managers,
whether driven by rational economic theory or not, to determine
what has worked in the past. Nevertheless, it is often very useful
to determine what has worked in the past because it may provide
insights into the manner in which investors make their investment
decisions.
Full Sample Period Results
The top 20 company fundamental and stock characteristic factors over
the full 10-year sample period from January 1989 to December 1998
are reported in Table 1.5 The factors are ranked by the
absolute value of their t-statistics, which indicate each factor's
statistical importance for determining the monthly total returns of
TSE stocks when all of the other explanatory variables are also included
in the regression. The sign in front of the t-statistic indicates
the direction of the payoff to that factor.6
There are many familiar variables in the top twenty list reported
in Table 1, and all of them are significant at the 10% level, with
the variables ranked one through 12 being significant at the 1%
level, and the top 19 being significant at the 5% level. Our top-ranked
variable is a well-known "value" measure, cash flow yield, which
has a t-statistic of +11.90. Its importance is consistent with previous
evidence related to the importance of value indicators, and with
the evidence of HB.7
We also observe three other value related factors among the top
20: sales to price ratio (7th); sales to assets ratio (9th); and
earnings yield (12th). Contrary to most previous evidence regarding
the existence of a positive relationship between these variables
and future stock returns, the coefficients for sales to price and
earnings yield are negative. Two other popular value factors, dividend
yield and the book to market earnings yield, displayed positive
(+0.71) and negative (-1.87) signs respectively. Overall these results
imply conflicting signals regarding the performance of value stocks
versus growth stocks, after we control for the influence of other
factors. While this contradicts much previous evidence, it is consistent
with the performance of value and growth stocks in Canada during
our sample period, as measured by popular style indexes. In particular,
the average monthly return of 0.72% for the BARRA large cap growth
index over the 1989-1998 period was below that of 1.03% for their
large cap value index. However, the opposite result was true for
their small cap style indexes, where the growth index average return
was 0.99%, versus 0.79% for the value index over the July 1990 to
December 1998 period.8 This observation is important
with respect to our findings because our regression methodology
implicitly treats all returns equally, unlike most indexes (including
the BARRA style indexes) that are value-weighted.
There is strong evidence supporting the impact of price momentum
on future returns based on the 2nd ranked factor (12-month active
returns). This is consistent with a growing body of evidence regarding
stock price momentum, and with the results of HB, who also rated
this variable second in their U.S. sample. In addition, the 5th
ranked factor (one-month active returns) demonstrates that stock
returns experience strong one-month mean reversion. HB rated this
the most important factor affecting U.S. stock returns, and also
documented some very large t-statistics for the other countries
they studied during their sample period.9 As will be
shown in the following sections, these two factors are two of the
most consistent factors affecting stock returns during the two five-year
sub-periods of our sample, and during both "up" and "down" markets.
Two other technical indicators related to a stock's trading history
are also among the top 20 factors: the 120-day moving average (MA)
crossover variable (ranked 11th), and the 60-day MA crossover variable
(ranked 17th). While technical factors are difficult to justify
economically, especially when controlling for the impact of other
fundamental factors, their impact and their coefficient signs are
all consistent with previous empirical evidence.
The 6th, 15th, 19th and 20th ranked factors in Table 1 are: the
number of revisions in fiscal year EPS estimates, the long term
forward PEG ratio inverse, two-year ahead expected EPS growth, and
expected quarterly EPS momentum. These factors show that future
stock returns are positively related to estimated future EPS growth
and earnings revisions, which is intuitive, and is consistent with
previous empirical evidence. Factors four and 14 (operating margin
and the return on equity (ROE) trend) are also intuitive, since
they imply that stock returns are positively related to firm profitability.
Curiously, the coefficient for the operating margin trend (our 13th-ranked
factor) is negative, contrary to what one would expect intuitively,
and based on the signs of the other profitability factors.
There are a few surprises in the top 20 list. First, the 3rd most
important factor determining stock returns in Canada over the past
10 years is the natural logarithm of stock price, and the relationship
is negative. The higher a stock price, the lower the return, on
average. Although the stock price effect is documented in the literature,
the importance of the variable is quite surprising because it makes
little intuitive or economic sense on the surface. One could argue
that the higher returns represent compensation for the higher commissions
and bid-ask spreads (percentage wise) associated with smaller priced
stocks.10 Along these lines, our 18th ranked variable,
the trading volume to float ratio, also has a negative coefficient,
indicating that investors are compensated to a certain extent for
stock illiquidity.11 Whatever the reason, stock price
is one of the most consistent predictors of stock returns in our
study.
One of the fundamental principles in modern financial theory is
that risk and return are positively correlated. That is, the higher
the risk of an investment, the higher the return. Thus, it is not
surprising to observe three risk-based factors in the top twenty:
debt-to-equity ratio (8th), EPS estimate dispersion (10th), and
total return risk (16th). However, all three of these risk-based
factors are negatively related to future stock returns. Seven of
our other nine risk factors also display an inverse relationship
between risk and future stock returns, with the lone exceptions
being cash flow yield volatility (+1.50) and the debt-to-equity
ratio trend (+0.05).12 While these results may be surprising,
they are consistent with the findings of HB, who rated debt to equity,
variance of total return, and residual variance among the twelve
most important factors across their five-country sample. These risk
factors all displayed negative coefficients, with debt to equity
being negative and significant in the U.S., Germany, France and
the U.K. The negative relationship between risk and return is also
consistent with other recent U.S. research.13
A factor that is conspicuous by its absence on the top 20 list
is firm size as measured by market capitalization. This factor produced
a t-statistic of +0.43, which implies it had a positive, but insignificant
impact on stock returns over the entire period. The lack of significance
is somewhat surprising, given the abundance of historical evidence
suggesting that small firms tend to outperform larger ones. However,
this factor was not rated among the top 12 factors by HB either.
In addition, this observation is consistent with the performance
of small and large cap stocks in Canada during our sample period,
which was about equal. For example, the BARRA large cap index average
monthly return of 0.91% over the July 1990 to December 1998 period
is very similar to the 0.87% average return for their small cap
index.
Factor Payoff Stability Tests
The previous section reported what worked on Bay Street over the past
ten years. However, the company fundamentals and stock characteristics
that are most rewarded in the stock market may vary over different
time periods. For example, what influenced stock returns on Bay Street
in the late 1980s may not predict stock returns in the late 1990s
and vice-versa. Indeed, investment styles come and go, as do investment
theories.
The purpose of this section is to determine the stability of the
factor payoffs and their relative level of importance between the
first half of the sample period and the second half of the period.
This is accomplished by estimating a factor payoff regression over
the first five years of the sample, January 1989 to December 1993,
and estimating another factor payoff regression over the second
five years of the sample, January 1994 to December 1998. The results
of this analysis are reported in Table 2.14
We begin by noting that four factors are among the top 10 during
both halves of the sample: stock price, number of revisions in fiscal
year EPS estimates, 12-month active returns and operating margin.
These factors represent four of the top six in our overall sample,
which suggests they have been the most powerful and stable factors
for determining future stock returns in Canada over the past decade.15
Only one other factor (one-month active returns) is among the top
20 in both sub-periods, and for the entire sample period (where
it was rated 5th). In short, five of the top six factors overall
are in the top 20 in both sub-periods, indicating the importance
of these factors. All of the remaining 15 factors in Table 1 make
the top 20 list in at least one sub-period except for the sales
to assets ratio. Our top-ranked factor in Table 1, cash flow yield,
was insignificant during the first sub-period and did not make the
top 20 list. Its high rating in the total sample results is driven
by its importance during the second sub-period, where it was again
the top-rated factor, with a t-statistic of +13.47. While the sub-period
results indicate that the rank and importance of the various factors
varies through time, there is also a great deal of consistency,
especially among five of the top six factors.
To further illustrate the stability, or lack of stability, of
the factor payoffs, Figure 1 plots the t-statistics of the top 6
factors for each calendar year of the 10-year sample period. The
most interesting result is that the relationship between cash flow
yield and stock returns is only strongly positive in two of the
ten years - 1994 and 1996. The remaining factors, 12-month active
returns, stock price, operating margin, one-month active returns
and the number of fiscal year EPS estimate revisions, are far more
consistent year-by-year with the sign of the payoff as expected
in most years. Nevertheless, it is interesting that price momentum
only appears to work in six of the ten years and operating margin
has only been associated with a positive return payoff since 1993.
Up Markets and Down Markets
The purpose of this section is to determine the stability of the factor
payoffs and their relative level of importance during the months that
the market is up and during the months that the market is down. This
is accomplished by separating the 10-year sample into two sub-samples:
all the months where the TSE 300 Index had returns that exceeded T-bill
returns by 2% or more, and all the months where the TSE 300 Index
had returns more than 2% below the T-bill return. Over the January
1989 to December 1998 period there were 37 (30.8%) "up" market months
and 29 (24.2%) "down" market months, with the remaining 54 months
falling in between. The breakdown through the sub-periods is 14 up
market months and 14 down months during the first half of the sample
period, and 23 up market months and 15 down months during the second
half. The results of this analysis are reported in Table 3.17
Only one factor, operating margin, is in the top 10 during both
up and down markets. Only three other factors among the top 20 in
Table 1 (12-month active returns, one-month active returns, and
120-day MA crossover) are in the top 20 during both up and down
markets. These results reinforce our conclusion in the previous
section regarding the consistent impact that one-month active returns,
12-month active returns and operating margin have had on Canadian
stock returns. In particular, throughout both sub-periods and during
both up and down markets, stock returns display a consistently strong
positive relationship with 12-month price momentum and operating
margin, and a strong negative relationship with one-month active
returns. Two of our other top six factors in Table 1 (stock price
and the number of fiscal EPS estimate revisions) were rated in the
top five in up markets, but were not among the top 20 during down
months. Our top-rated factor in Table 1, cash flow yield, was rated
number two in down markets, but was insignificant during up markets,
with a t-statistic of only +0.09.
Similar to our sub-period results, we observe that 13 of the 16
remaining variables reported in Table 1 show up in either up or
down markets. The three exceptions are the sales to assets ratio,
EPS estimate dispersion, and two-year ahead expected EPS growth,
which do not appear in Table 3. Table 3 also displays six top 20
variables that did not appear in either Table 1 or Table 2: market
capitalization and the analyst coverage dummy variable (which make
the top 20 in both up and down markets); cash flow yield risk (up
markets only); and, the reinvestment rate, the logarithm of sales
and sales momentum (down markets only).
It is interesting to note that market capitalization has the largest
impact on stock returns during down markets, displaying a significant
negative relationship (-2.71). By contrast, market capitalization
is rated number 20 during up markets, but has a positive coefficient,
with a t-statistic of +1.48. This suggests that large cap stocks
performed better than small cap stocks during the up markets in
our sample, but worse during down months. This market value effect,
as well as the significant negative relationship between stock returns
and the trading volume to market float ratio during down markets,
is consistent with the notion that lower liquidity during down markets
tends to provide some price support.
Overall, there are four technical factors among the top 20 during
up markets, and three during down markets, confirming their importance
during both kinds of markets. Some of our other factor categories
appear to vary in importance in Table 3. There are five earnings
estimate factors and four profitability factors among the top 20
during up markets, with the corresponding numbers for down markets
being zero, and two. By contrast, there are five value factors and
four growth factors in the top 20 during down markets, with only
one of each appearing in the top 20 for up markets. Overall, these
results suggest that technical factors are important during both
up and down markets, while expected earnings and profitability measures
are more important during up markets. Finally, liquidity, value
and growth measures appear to be more important during down markets.
Conclusions
While it is difficult to make definitive conclusions regarding why
stock returns behave as they do, several results from our study stand
out. The most statistically powerful and stable predictors of future
stock returns in Canada over the last decade have been 12-month price
momentum, one-month reversals, operating margin, the number of earnings
estimate revisions, and stock price. These results demonstrate the
importance of technical indicators, profitability measures and stock
liquidity on Canadian stock returns. Cash flow yield has also been
very important, particularly in 1994 and 1996. Risk variables, when
significant, often displayed a negative relationship with stock returns,
contrary to what one might expect, while traditional value factors
varied in sign and levels of significance.
The influence of a number of variables has varied through time,
which may be a function of changes in the economic or market conditions
in existence during our sample period, changes in the investment
styles or theories that were in vogue, or both. In addition, the
importance of many factors varied substantially across up and down
markets. In particular, we found that liquidity, value and growth
measures were more important during down markets, while earnings
estimates and profitability factors were more important during up
markets.
Obviously, the results of this article are important to the market
efficiency debate. They demonstrate that future Canadian stock returns
are predictable from easily observable company fundamentals and
market characteristics, which may contradict the notion of market
efficiency. However, predictability in and of itself does not indicate
inefficiency. Indeed, observing significant factor payoffs may simply
indicate compensation for incremental risk, which is rational. Thus,
the results of this article may, in fact, be consistent with Canadian
market efficiency.
However, there are a couple of observations that make this argument
difficult to accept. First, among the most important factors are
stock price, one-month price reversals, and 12-month price momentum.
These factors are difficult to justify economically as rational
drivers of future stock returns, especially since we control for
the influence of other fundamental factors. Second, the majority
of the risk-based factors included in the analysis display a negative
payoff, often significantly negative. That is, the higher the risk,
the lower the future stock return.
In any event, the main concern for investors is whether the important
factors will continue to be important in the future. If the factors
are difficult to justify economically, then it seems reasonable
to expect investors to arbitrage those payoffs away as they become
more widely known. However, it is possible that the so-called "irrational"
payoffs are a result of basic behavioral, psychological and cognitive
biases, and/or institutional effects. If these biases and effects
are consistent and stable through time, then their payoffs may indeed
exist into the future.
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Appendix: Company and Market Factors
Risk and Quasi-Risk Factors:
- Stock Market Beta - Regression coefficient of stock return on
TSE 300 return over the trailing 60-month (minimum 36-month) time
period
- Total Return Risk - Standard deviation of the stock return over
the trailing 60-month (minimum 36-month) time period
- Cash Flow Yield Risk - Standard deviation of the cash flow yield
over the trailing 60-month (minimum 36-month) time period
- Debt to Equity Ratio - Total long-term debt-to-equity ratio
- Debt to Equity Ratio Trend - Regression coefficient of the debt-to-equity
ratio on time over the trailing 60-month (minimum 36-month) time
period
- Debt Momentum - Trailing 12-month growth rate in total long-term
debt
- Growth Rate of Debt - The geometric annual average growth rate
in total long-term debt over the trailing 48-month time period
- Interest Coverage - Operating income before depreciation divided
by long-term debt interest expenses
- Working Capital Ratio - Total current assets divided by total
current liabilities
- EPS Predictability - Coefficient of determination for the regression
of EPS on time over the trailing 60-month (minimum 36-month) time
period
- Sales Predictability - Coefficient of determination for the
regression of total annual sales on time over the trailing 60-month
(minimum 36-month) time period
- EPS Estimate Dispersion - Coefficient of variation of current
fiscal year I/B/E/S EPS estimates
Size and Liquidity Factors:
- Market Capitalization - Natural logarithm of common stock market
capitalization
- Sales - Natural logarithm of net sales
- Stock Price - Natural logarithm of common stock price
- Trading Volume to Float Ratio - Trailing 6-month average monthly
trading volume divided by market float
- Trading Volume Trend - Regression coefficient of the trading
volume on time over the trailing 60-month (minimum 36-month) time
period
- Analyst Coverage Dummy - Dummy variable equaling one for firms
where two or more analysts have given fiscal year estimates
Value Factors:
- Dividend Yield - Trailing annual dividends to common shareholders
divided by stock price
- Book to Market Value - Common shareholders book value divided
by the common stock market capitalization
- Cash Flow Yield - Trailing annual cash flow from operations
divided by the common stock market capitalization of the firm
- Trend in Cash Flow Yield - Regression coefficient of the cash
flow yield on time over the trailing 60-month (minimum 36-month)
time period
- Earnings Yield - Trailing annual primary EPS excluding extraordinary
items divided by the stock price
- Expected Earnings Yield - I/B/E/S current fiscal year consensus
EPS divided by stock price
- Sales to Assets Ratio - Total net sales divided by total assets
- Sales to Price Ratio - Total net sales divided by common stock
market capitalization
- Sales to Price Ratio Trend - Regression coefficient of the sales
to market value ratio on time over the trailing 60-month (minimum
36-month) time period
Growth Factors:
- Reinvestment Rate - Average net income less dividends divided
by the book value of equity over prior 3 years
- Sales Momentum - Trailing 12-month growth rate in net sales
- Growth Rate of Sales - The geometric annual average growth rate
in net sales over the trailing 48-month time period
- EPS Momentum - Trailing 12-month growth rate in primary EPS
before extraordinary items
- Growth Rate of EPS - The geometric annual average growth rate
in EPS over the trailing 48-month time period
- Expected Quarterly EPS Momentum - The most recent I/B/E/S consensus
12-month forward EPS estimate divided by the consensus 12-month
forward EPS estimate 3-months prior
- 1-Year Ahead EPS Growth - Current fiscal year I/B/E/S consensus
EPS estimate divided by most recent actual EPS
- Negative EPS Dummy - Zero/one dummy variable indicating non-negative
12-month lagged EPS
- Lagged PEG Ratio Inverse - Trailing 12-month growth in EPS divided
by stock price divided by most recent trailing fiscal year EPS
for firms with positive EPS, zero otherwise
- 1-Year Ahead Negative EPS Dummy - Zero/one dummy variable indicating
non-negative one-year ahead I/B/E/S consensus EPS
- 1-Year Ahead PEG Ratio Inverse - One-year ahead EPS growth (I/B/E/S
consensus) divided by stock price divided by current fiscal year
EPS (I/B/E/S consensus) for firms with positive consensus EPS,
zero otherwise
- 2-Year Ahead EPS Growth - Next fiscal year I/B/E/S consensus
EPS divided by current fiscal year I/B/E/S consensus EPS
- LT Expected EPS Growth Rate - I/B/E/S consensus five-year ahead
growth in EPS
- LT Forward PEG Ratio Inverse - Five-year ahead EPS growth (I/B/E/S
consensus) divided by stock price divided by current fiscal year
EPS (I/B/E/S consensus) for firms with positive consensus EPS,
zero otherwise
Profitability Factors
- Return on Equity - Net income before extraordinary items divided
by common shareholders book value of equity
- Trend in Return on Equity - Regression coefficient of the return
on equity ratio on time over the trailing 60-month (minimum 36-month)
time period
- Return on Assets - Net income before extraordinary items divided
by total assets
- Operating Margin - Operating income divided by total net sales
- Trend in Operating Margin - Regression coefficient of the operating
margin on time over the trailing 60-month (minimum 36-month) time
period
Earnings Estimate Revision and Surprise Factors:
- Revision in Q1 EPS Estimates - Percentage change in current
month I/B/E/S consensus fiscal quarter EPS estimate relative to
consensus EPS estimate one month prior
- Revision in FY1 EPS Estimates - Percentage change in current
month I/B/E/S consensus fiscal year EPS estimate relative to consensus
EPS estimate three months prior
- No. of Q1 Estimate Revisions - Number of current month I/B/E/S
fiscal quarter EPS estimates raised less number of estimates lowered
divided by total number of estimates
- No. of FY1 Estimate Revisions - Number of current month I/B/E/S
fiscal year EPS estimates raised less number of estimates lowered
divided by total number of estimates
- Fiscal Quarter EPS Surprise - Actual fiscal quarter EPS less
the I/B/E/S consensus earnings estimate divided by the cross-sectional
standard deviation of the earnings estimates for the most recently
reported fiscal quarter
- Fiscal Year EPS Surprise - Actual fiscal year EPS less the I/B/E/S
consensus earnings estimate divided by the standard deviation
of the earnings estimates weighted for the number of months since
surprise for the most recently reported fiscal year
Technical Factors:
- Alpha - Regression constant of a regression of stock return
on the TSE 300 return over the trailing 60-month (minimum 36-month)
time period
- 1-Month Active Return - One-month stock return less the one-month
TSE 300 return
- 3-Month Active Return - Three-month stock return less the three-month
TSE 300 return
- 12-Month Active Return - Twelve-month stock return less the
twelve-month TSE 300 return
- 36-Month Active Return - 36-month stock return less the 36-month
TSE 300 return
- 60-Day MA Cross-Over - Zero/one dummy variable indicating that
the current month-end stock price exceeds the average month-end
stock prices over the prior two months
- 120-Day MA Cross-Over - Zero/one dummy variable indicating that
the current month-end stock price exceeds the average month-end
stock prices over the prior four months
Economic Sector Variables:
60-70. Sector Dummies - Zero/one dummy variable indicating economic
sector. Defined sectors are basic materials, consumer cyclicals,
consumer staples, health care, energy, financial services, capital
goods, technology, communication services, utilities, and transportation.
Table 1
|
Top 20 Factor Payoffs Over Full Sample Period
January 1989 to December 1998
|
| Rank |
Factor
Name |
T-Statistic |
| 1 |
Cash
Flow Yield |
11.90 |
| 2 |
12-Month
Active Return |
6.47 |
| 3 |
Stock
Price |
-6.27 |
| 4 |
Operating
Margin |
5.21 |
| 5 |
1-Month
Active Return |
-5.11 |
| 6 |
No.
of FY1 Estimate Revisions |
4.72 |
| 7 |
Sales
to Price Ratio |
-4.15 |
| 8 |
Debt
to Equity Ratio |
-4.14 |
| 9 |
Sales
to Assets Ratio |
3.06 |
| 10 |
EPS
Estimate Dispersion |
-2.84 |
| 11 |
120-Day
MA Cross-Over |
2.78 |
| 12 |
Earnings
Yield |
-2.64 |
| 13 |
Operating
Margin Trend |
-2.50 |
| 14 |
Return
on Equity Trend |
2.38 |
| 15 |
LT
Forward PEG Ratio Inverse |
2.27 |
| 16 |
Total
Return Risk |
-2.21 |
| 17 |
60-Day
MA Cross-Over |
2.16 |
| 18 |
Trading
Volume to Float Ratio |
-2.06 |
| 19 |
2-Year
Ahead Expected EPS Growth |
1.96 |
| 20 |
Expected
Quarterly Earnings Momentum |
1.92 |
Table 2
|
Top 20 Multivariate Factor Payoffs during the First and Second
Half of Sample Period
January 1989 to December 1998
|
First
Half of Sample
January 1989 to December 1993 |
Second
Half of Sample
January 1994 to December 1998 |
| Rank |
Factor
Name |
T-Statistic |
Rank |
Factor
Name |
T-Statistic |
| 1 |
Return
on Equity |
7.60 |
1 |
Cash
Flow Yield |
13.47 |
| 2 |
Stock
Price |
-5.42 |
2 |
Debt
to Equity Ratio |
-7.28 |
| 3 |
Dividend
Yield |
4.54 |
3 |
12-Month
Active Return |
5.96 |
| 4 |
No.
of FY1 Estimate Revisions |
4.20 |
4 |
1-Month
Active Return |
-4.95 |
| 5 |
Revision
in Q1 EPS Estimates |
-3.40 |
5 |
Operating
Margin |
4.78 |
| 6 |
Return
on Equity Trend |
2.85 |
6 |
Stock
Price |
-4.74 |
| 7 |
12-Month
Active Return |
2.68 |
7 |
Earnings
Yield |
-3.73 |
| 8 |
LT
Expected EPS Growth Rate |
-2.42 |
8 |
Operating
Margin Trend |
-2.93 |
| 9 |
Revision
in FY1 EPS Estimates |
2.35 |
9 |
120-Day
MA Cross-Over |
2.63 |
| 10 |
Operating
Margin |
2.31 |
10 |
No.
of FY1 Estimate Revisions |
2.58 |
| 11 |
Return
on Assets |
-2.16 |
11 |
Expected
Quarterly Earnings Momentum |
2.18 |
| 12 |
Sales
Predictability |
2.06 |
12 |
Sales
to Price Ratio |
-1.87 |
| 13 |
Trading
Volume to Float Ratio Trend |
1.95 |
13 |
EPS
Estimate Dispersion |
-1.84 |
| 14 |
LT
Forward PEG Ratio Inverse |
1.92 |
14 |
Trading
Volume to Float Ratio |
-1.83 |
| 15 |
60-Day
MA Cross-Over |
1.91 |
15 |
Book
Value to Price Ratio |
-1.70 |
| 16 |
2-Year
Ahead Expected EPS Growth |
1.79 |
16 |
Return
on Equity |
-1.59 |
| 17 |
Fiscal
Quarter EPS Surprise |
1.74 |
17 |
Total
Return Risk |
-1.53 |
| 18 |
1-Month
Active Return |
-1.72 |
18 |
60-Day
MA Cross-Over |
1.49 |
| 19 |
Growth
Rate of EPS |
1.60 |
19 |
Interest
Coverage |
1.45 |
| 20 |
Expected
Earnings Yield |
1.60 |
20 |
Negative
Expected EPS Dummy |
1.43 |
Table 3
|
Top 20 Multivariate Factor Payoffs during Up and Down Market
Months
January 1989 to December 1998
|
Up
Market Months
January 1989 to December 1998 |
Down
Market Months
January 1989 to December 1998 |
| Rank |
Factor
Name |
T-Statistic |
Rank |
Factor
Name |
T-Statistic |
| 1 |
12-Month
Active Return |
5.56 |
1 |
Operating
Margin |
5.73 |
| 2 |
Stock
Price |
-4.92 |
2 |
Cash
Flow Yield |
4.70 |
| 3 |
1-Month
Active Return |
-4.89 |
3 |
120-Day
MA Cross-Over |
4.60 |
| 4 |
Operating
Margin |
4.05 |
4 |
Return
on Equity |
4.14 |
| 5 |
No.
of FY1 Estimate Revisions |
2.89 |
5 |
Expected
Earnings Yield |
3.50 |
| 6 |
Return
on Equity Trend |
2.62 |
6 |
Analyst
Coverage Dummy |
-3.39 |
| 7 |
Return
on Assets |
2.48 |
7 |
Trading
Volume to Float Ratio |
-3.34 |
| 8 |
Operating
Margin Trend |
-2.44 |
8 |
Reinvestment
Rate |
-3.05 |
| 9 |
LT
Forward PEG Ratio Inverse |
2.37 |
9 |
Total
Return Risk |
-2.93 |
| 10 |
60-Day
MA Cross-Over |
2.36 |
10 |
Sales
to Price Ratio |
-2.89 |
| 11 |
Negative
EPS Dummy |
2.22 |
11 |
Sales |
2.87 |
| 12 |
Cash
Flow Yield Standard Deviation |
2.09 |
12 |
Sales
Momentum |
-2.74 |
| 13 |
Analyst
Coverage Dummy |
2.01 |
13 |
Market
Capitalization |
-2.71 |
| 14 |
Revision
in FY1 EPS Estimates |
2.00 |
14 |
Dividend
Yield |
-2.51 |
| 15 |
Negative
Expected EPS Dummy |
1.79 |
15 |
1-Month
Active Return |
-2.38 |
| 16 |
Revision
in Q1 EPS Estimates |
-1.71 |
16 |
Debt
to Equity Ratio |
-2.07 |
| 17 |
120-Day
MA Cross-Over |
1.64 |
17 |
12-Month
Active Return |
2.06 |
| 18 |
Fiscal
Quarter EPS Surprise |
-1.55 |
18 |
Growth
Rate of EPS |
-1.99 |
| 19 |
Earnings
Yield |
-1.51 |
19 |
Book
Value to Price Ratio |
-1.80 |
| 20 |
Market
Capitalization |
1.48 |
20 |
Expected
Quarterly Earnings Momentum |
1.74 |
Endnotes
- There are several studies documenting the size and book-value-to-price
effects including the U.S. evidence of Fama and French (1992),
and the international evidence of Capaul, Rowley and Sharpe (1993),
and Fama and French (1998). Price momentum has been shown to exist
in U.S. markets by Jegadeesh and Titman (1993), in Canadian markets
by Foerster, Prihar and Schmitz (1994/95) and Cleary and Inglis
(1998), and in other global markets by Rowenwerst (1998).
- These screens should also reduce the impact of survivorship
bias, since firms going bankrupt may be eliminated from the sample
prior to going bankrupt.
- In particular, the data for the independent variables is
truncated at the 1st and 99th percentiles to remove extreme outliers.
The data is further truncated at plus and minus four standard
deviations. These truncation routines are repeated cross-sectionally
each month during the sample period.
- There is some evidence of multicollinearity in the factor
payoff regressions, as some of the factor payoffs do appear somewhat
sensitive to the factors included in the analysis, the sample
period, and the sample selection criteria. Nevertheless, over
the full sample period the correlations between the factors are
not excessive for stock factor research. Across all of the 59
factors and their 1,711 unique cross-correlations, only 22 of
the correlations exceed 0.50, only 16 exceed 0.60, and only 5
exceed 0.70. In addition, the factors that rank in the top 10
are relatively stable to the included factors, the sample period
and the sample selection criteria, and the signs of the payoffs
are for the most part consistent with prior expectations and other
research. Consequently, while multicollinearity is an issue with
this research and may influence some of the results, it is probably
does not drive the majority of the results.
- The sample includes 31,321 firm months of observations.
The adjusted R-squared of the regression is 2.20%, with 23 of
the 59 factors being statistically significant at the 10% level.
- Fifty-nine separate regressions were also run using each
factor as the sole explanatory variable, other than the industry
dummy variables. While it is not as meaningful to rank these variables
based on their t-statistics as it is in the multivariate regressions,
we provide the top 10 list here in order, along with their t-statistics
for the interested reader: number of FY1 estimate revisions (+10.67);
120-day moving average cross-over dummy (+9.88); 12-month active
return (+8.55); expected quarterly EPS momentum (+7.93); 3-month
active return (+7.16); 60-day moving average cross-over dummy
(+6.61); revision in FY1 EPS estimates (+6.28); cash flow yield
(+5.62); operating margin (+5.12); and total return risk (-4.42).
Notice that eight of these also appear in the top 20 presented
in Table 1 for the multivariate regressions, including four of
the top six.
- HB also found this to be an important predictor of stock
returns over the 1985-93 period, based on multivariate t-statistics
in their samples from: the U.S. (+6.2); Germany (+2.7); France
(+5.1); the U.K. (+3.1); and Japan (+1.7).
- Information for the BARRA small cap indexes is only available
as far back as July 1990.
- HB found 12-month excess returns to be an important predictor
of stock returns in the US (+7.8), Germany (+2.8), France (+4.2),
the U.K. (+7.3), and Japan (+1.5). In addition, HB found one-month
excess returns to be an important factor in the U.S. (-10.8);
Germany (-8.8); France (-11.3); the U.K. (-7.6), and Japan (-13.3).
- To test whether bid-ask bounce could explain any of the
price effect, identical multivariate regressions were estimated,
except the price factor was lagged an extra month. While the t-statistics
and thus significance of the price factor fell very slightly,
in most cases the rank of the price factor remained the same.
Therefore, it is unlikely that bid-ask bounce explains the power
and significance of the price factor. A similar experiment was
conducted with the 12-month price momentum factor. Again, implementing
an additional lag on the momentum factor did not materially affect
the power of this factor.
- HB found this to be the third most important factor influencing
U.S. stock returns, with a t-statistic of -5.25.
- While the coefficient on interest coverage is positive,
a higher value for this ratio indicates lower risk, so the implied
relationship between risk and return is negative.
- For example, see Fama and French (1992), Bauman and Miller
(1997), and Haugen (1995).
- The first half of the sample period includes 10,179 firm
months of observations. The adjusted R-squared of the regression
is 3.24%, and 18 of the 59 factors are statistically significant
at the 10% level. The regression for the second half of the sample
period includes 21,142 firm months of observations, reports an
adjusted R-squared value of 3.03%, and finds 15 of the 59 factors
significant at the 10% level.
- The momentum effect was first documented in Canada by Foerster,
Prihar, and Schmitz (1994/95) using data through 1993. Although
their article received a lot of attention due to the strength
of their results, it did receive some criticism due to their sample
formation methodology. These sub-period results not only confirm
those of Foerster, Prihar and Schmitz, they provide out-of-sample
support for the Canadian momentum effect, since the second half
of the present sample is post-1993. In fact, it actually appears
the momentum effect has gotten stronger since 1993.
- The up market sample includes 10,643 firm months of observations.
The adjusted R-squared of the regression is 3.29%, and 16 of the
59 factors are statistically significant at the 10% level. The
regression for the down market sample includes 7,729 firm months
of observations, reports an adjusted R-squared value of 7.53%,
and finds 20 of the 59 factors significant at the 10% level. Notice
that the predictability of returns in down markets is much higher
than in up markets.
John J. Schmitz, Ph.D., CFA, is Senior Vice President of Investments
at Maxxum Fund Management Inc., an investment advisory firm based
in Toronto. Maxxum Fund Management advises the Maxxum Funds offered
by Scudder Maxxum Co., and is a wholly owned subsidiary of Investors
Group. Sean Cleary, Ph.D., is an Associate Professor in the Frank
H. Sobey Faculty of Commerce at Saint Mary's University in Halifax.
The authors would like to thank reviewers at the Canadian Investment
Review, as well as participants at the 2000 annual ASAC conference.
|