The Persistence of Active Management Outperformance

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This article originally appeared on ETF.COM here.

Since 2002, S&P Dow Jones Indices has published its biannual Indices Versus Active (SPIVA) reports, which compare the performance of actively managed equity funds to their appropriate index benchmarks. It also puts out a pair of scorecards each year that focus on persistence of performance.

This is an important issue, because if persistence is not significantly greater than should be expected at random, investors cannot separate skill-based performance (which might be able to persist) from luck-based performance (which eventually runs out).

Following are some of the highlights from the just-released July 2018 persistence scorecard, with data through March 2018:

  • Out of 557 domestic equity funds in the top quartile as of March 2016, only 2.3% managed to stay in the top quartile at the end of March 2018. Furthermore, only 0.9% of the large-cap funds, no midcap funds and 3.9% of the small-cap funds were able to remain in the top quartile over that period. Given that, randomly, we would expect 6.3% to do so, we have evidence both that it’s hard to separate skill from luck in fund performance and relying on past performance is a fool’s errand.
  • Over three-consecutive 12-month periods ending March 2018, 22.1% of large-cap funds, 7.6% of midcap funds and 13.5% of small-cap funds maintained a top-half ranking.
  • Randomly, we would expect 25% to do so.
  • Only 11.4% of large-cap funds, 1.2% of midcap funds and 3.6% of small-cap funds maintained top-half performance over five-consecutive 12-month periods. Random expectations would suggest a repeat rate of 6.3%.

The bottom line is that, basically, there was no evidence of persistence in performance greater than randomly expected among active equity managers. Making matters worse is that a stronger likelihood existed of the best-performing funds becoming the worst-performing funds than vice versa.