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Tag Archives: skewed returns

Dec 9, 2020

The Distribution of Alpha

Investment management is a zero sum game. The source of outperformance for a market’s outperformers is the underperformance of the same market’s underperformers. Properly measured, the weighted average sum of the winners’ gains is exactly equal (before costs) to the weighted average sum of the losers’ losses. This identity, along with the professionalization of the…

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Feb 22, 2018

The Skew Is Not New

Market observers have noted that the S&P 500’s performance so far this year has been dominated by a small number of technology stocks.  This observation is certainly correct, although it’s fair to question the relevance of a statistic based on fewer than two months’ data.  What’s more important is to bear in mind that this…

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