In Monday’s post I looked at “smart beta,” which promises to outperform cap-weighted indexing strategies. I’m frequently asked if I think Couch Potato investors should dump their traditional index funds in favour of these tempting alternatives. Here’s why my answer is no.
I could rhyme off technical reasons for being skeptical about the outperformance of alternative indexes: the research ignores costs and taxes, the strategies may not work in the future, and so on. But I won’t go down that road, because the most important reason is not technical, but behavioral.
Everything beats the market—except investors
To recap, two recent papers from Cass Business School in London looked at US stocks from 1968 through 2011, a period when a cap-weighted portfolio would have returned 9.4% annually. (Canadian stocks had an almost identical return over those 43 years.) The researchers examined 13 alternative strategies—which favoured value stocks, small-cap stocks or low-volatility stocks—and found all of them outperformed, with returns between 9.8% and 11.5%.
For many people, the takeaway from these findings is, “I should use alternative indexes, because I can beat the market by a point or two.” My reaction is different: I want to know how many investors earned even 9.4%.