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When I got the call to do a book review, I immediately thought,
yes - action, romance, adventure! Well, little did I know that I
would be writing a review on Investing by the Numbers, a
book by a quantitative investor who actually argues for a synthesis
view of quantitative analysis combined with qualitative judgements.
Jarrod Wilcox can claim both the academic qualities and practical
experiences of investing, as he has a Ph.D. and CFA, as well as
a number of investment work experiences.
Wilcox's excellent book reflects these varied experiences as he
artfully reviews and discusses the practical application of a number
of quantitative investment theories and tools. The essence of Wilcox's
message is that if one is to succeed in active investment management
a blend of quantitative techniques in combination with qualitative
judgements is the way to go.
Quantitative analysis on its own is not sufficient to win at active
management, for a number of reasons, including lack of data, simplified
assumptions, and system structure instability. The bottom line is,
even to successfully apply quantitative models one needs to have
a rigorous qualitative understanding of how markets work and apply
appropriate judgement to the method.
This up to date book covers such current investment topics such
as behavioural finance and its application for investment strategies;
trading cost, taxes and implementation shortfall; complexity theory
and ecology; neural nets and genetic algorithms; and emerging markets.
Models reviewed and assessed by Wilcox include: the Markowitz efficient
frontier; the CAPM; option pricing; APT; and risk forecasting.
As with any hard core investment book there are parts that are
particularly dry, but that comes with the territory.
While there is good coverage of currency from an investor's perspective,
I would have preferred more discussion on how to actively forecast
currency return and risk. Notwithstanding these later two comments,
I would highly recommend this book for anyone who wanted an excellent
update on the application of qualitative judgements from within
a quantitative framework.
Harry Marmer is director of institutional services at Frank
Russell Canada in Toronto.
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