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That is exactly the kind of conclusion one might make if one doesn't look at studies like this carefully. I have recommended both index funds and active funds for different situation so don't have a bone to pick in this debate. But the conclusion this study supports logically (without a confirmation bias) is that if you pick your actively managed funds by throwing a dart at all available (and defunct) funds, you have good odds of doing better than index funds in 4 out of 6 classes before fees and in some classes even after fees. Nothing more, nothing less.
2) So go ahead and go with indexes only? Or stick with those two (:)).
Think of a reason this implication is incorrect. Hint: Total market?Kenneth French suggested in a 2008 paper that actively managed funds, in aggregate, are equal to the sum of the market, making active management a zero sum game, before trading costs and fees are applied. This implies that in aggregate, active managers will underperform the market by an amount equal to fees and expenses.
The study includes an increasing number of funds with strategies for whom the performance criterion selection is irrelevant but skews the results for others. Can you think of which? Hint: RiskFinally, through the process of researching this paper, a large amount of “noise” could be observed which was caused by the mismatch between funds’ strategies and their benchmarks.
The metric chosen compares the spread between performance of the worst of the best and the best of the worst.Another important metric to consider is the dispersion of manager performance. We measure this dispersion by interquartile spreads which is the top quartile subtracted by the bottom quartile. For example, if 100 managers were ranked by performance and 1 was the highest rank, the interquartile spread would be the 25th manager minus the 75th...... The size of this spread is a good indicator of how much value a “skilled” (or lucky) manager can add relative to an “unskilled” (or unlucky) manager. Another way to interpret these results is to think of the size of the spread as an indicator of how much potential value lies in selecting a superior active manager within these asset classes.
Can you think of a characteristic of the evolution of the fund industry where the use of the specific statistical measure of this study alone can explain the change in measured value than any reduction in opportunities? Hint: sample space and spread.“Have markets become more efficient through time?”
The supporting argument for this thesis is that, as time passes, successful investment strategies become more widely known. As more managers adopt and execute the strategy, the informational advantages of the strategy decrease as more information is reflected in market prices, thus reducing arbitrage opportunities and mispricings.
Given 4 above, can you spot the fallacy in the conclusion above? Hint: garbage in, garbage out.It shows that, across the board, median manager alpha declined over the past ten years relative to the period that came before. This supports the theory that markets have continued to become more efficient through time within every major asset class.
Can you see what might happen to the trend line in that chart if the measuring period started from 1983 after the extreme overperformance of active managers in the couple of years before it? Can you think of the most obvious market condition that determines this measure and hence its efficacy in supporting market efficiency theories? Hint: Markets go up and they go down.Examining the possibility of increased market efficiency further, the following chart shows the spread between the top and bottom quartile of Domestic Large Cap Core managers through time. Although the interquartile spread did increase during recession periods like 2001 and 2008, the general trend has been one of decline. In other words, the trend since 1979 has been a decreasing amount of difference between the best and worst performing U.S. equity managers.
Same as 6 above. If the measuring period started from extreme underperformance, the results would be opposite.To further clarify this point, the following chart shows the trend of the top and bottom quartile managers in the large cap core asset class. As before, we see that the distance between these two lines has been decreasing (i.e., the spread has shrunk), but perhaps more interestingly, the chart shows that this decrease has not been perfectly symmetrical. The trend in the bottom quartile managers has increased by 2 bps per year, but the trend of the top quartile managers has decreased by 6 bps per year. This indicates that the majority of the decrease in interquartile spreads came from a reduction in the potential upside rather than from a decrease in potential downside.
Can you see why there will be a lack of correlation between this measure and the ability of the manager to outperform over that entire period? Hint: Look at the results of several of your funds over the last 10 years.This analysis indicates that managers who outperformed over a five-year period were no more likely to outperform over the next five-year period than any other manager selected at random.
Can you spot the logical fallacy in the above statement regarding skills and market conditions?:Hint: dependent vs independent variables.Although this paper has provided strong evidence against persistence within manager performance, it is important to note that we have not controlled for any other factors and therefore do not make any statement about manager skill. These factors include but are not limited to Macroeconomic Timing, Style, Sector, or Industry concentrations and variation, and overall active risk.15 It is possible that, after controlling for these factors, an investor may be able to identify managers who possess skill but exhibit a lack of persistent outperformance due to the cyclicality of these factors or the market rather than any cyclicality of the manager’s skill.
thanks jliev - this is exactly what could be useful in this particular discussion.I had some issues accessing the sight last night from about 11:50pm to 12:20am Pacific. Kept getting one of those cloudflare pages.
I have to agree GASFX (+10.48%), VNQ (+11.15%), PETDX (+16.5%)@Old_Skeet. Looks like commodities, infrasturtcure/real estate lead the pack this year.
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