Let's talk about the Random Walk. The stockmarket is a game of chance - you might as well flip a coin to determine which way prices are going. In fact tossing is preferable because researching shares or paying professionals takes time and costs money.
The Random Walk attacks the tenets of professional fund management: that investors can pick shares trading at a lower price than their true value or traders can spot trends in price movements and exploit them.
Malkiel marshals an army of statisticians, back-testing the more common investment strategies and finding them wanting. Sure you may win in the short-term, but that is lady luck. In the long-run, once you take costs into account, all bets are off.
I do not buy it. Back-testing is fine and dandy but does it actually prove anything? Real investors - and I am talking about private investors here - change their strategies, exercise judgement and break the rules. They are not slaves to the slide-rule.
While it is common knowledge that professional money managers are doomed to fail, I suspect private investors have a better chance of beating the market. The problem is private investors are by nature shy animals.
Just because I disagree with his thesis does not mean I do not think you should bother with the book. Malkiel is articulate and his tour through fundamental analysis, technical analysis, modern portfolio theory and the capital asset pricing model is as good as any introduction I have read.
I just cannot bring myself to believe anomalies do not exist when I see them all around me. You know - internet bubbles, overreactions, Warren Buffet. Even Malkiel sees anomalies. But in his world they are rare, difficult to profit from and vanish once common knowledge.
He even has an investment trust habit. C'mon Mr Malkiel admit it - inside every index-hugger is a stock picker desperate to get out. It is more fun!
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A word of warning for British readers. The first three chapters are theory, it is a universal language. The fourth is a practical guide, less practical for us because it is written in American: all IRA's and Keogh plans. Still you can translate some of it and derive general principles from the rest.
