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Tag Archives: S&P 100 EWI

Jul 17, 2025

Weighting in the Wings: Equal Weight in a Mega-Cap World

In today’s equity market, mega-cap stocks are not just influential—they have become a driving force shaping overall performance and strategic market dynamics.1 The increasing market dominance of the top 100 constituents, and the narrowing differential in cumulative weights of these names, in both the S&P Total Market Index (TMI)—which tracks the broad U.S. equity market—and…

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