In this episode of Enrich Your Future, Andrew and Larry Swedroe discuss Larry’s new book, Enrich Your Future: The Keys to Successful Investing. In this series, they discuss Chapter 04: Why Is Persistent Outperformance So Hard to Find?

LEARNING: Focus on building a robust asset allocation plan, regularly rebalancing it, and stick with it.

In this episode of Enrich Your Future, Andrew and Larry Swedroe discuss Larry’s new book, Enrich Your Future: The Keys to Successful Investing. The book is a collection of stories that Larry has developed over the 30 years or so that he’s been trying to help investors. Larry is the head of financial and economic research at Buckingham Wealth Partners. You can learn more about Larry’s Worst Investment Ever story on Ep645: Beware of Idiosyncratic Risks.

Larry deeply understands the world of academic research and investing, especially risk. Today, Andrew and Larry discuss Chapter 04: Why Is Persistent Outperformance So Hard to Find?

In this chapter, Larry explains why persistent outperformance beyond the randomly expected is so hard to find.

According to Larry, the equivalent of the Holy Grail is finding the formula that allows many investors to time the market successfully. For others, it is finding the fund manager who can exploit market mispricings by buying undervalued stocks and perhaps shorting overvalued ones. However, markets are very highly efficient. An efficient market means that the price is the best estimate investors have of the right price. They don’t know the right price until after the fact.

The efficiency of the markets and the evidence of the effects of scale on trading costs explain why persistent outperformance beyond the randomly expected is so hard to find. Thus, the search by investors for persistent outperformance is likely to prove as successful as Sir Galahad’s search for the Holy Grail.

Larry adds that the only place we find the persistence of performance (beyond that which we would randomly expect) is at the very bottom—poorly performing funds tend to repeat. And the persistence of poor performance is not due to poor stock selection. Instead, it is due to high expenses.

Larry says the efficient market hypothesis (EMH) explains why all investors should expect a lack of persistence. It states that it is only by random good luck that a fund can persistently outperform after the expenses of its efforts. But there is also a practical reason for the lack of persistence: Successful active management sows the seeds of its own destruction.

Just as the EMH explains why investors cannot use publicly available information to beat the market (because all investors have access to that information, and it is therefore already embedded in prices), the same is true of active managers. Investors should not expect to outperform the market by using publicly available information to...