Methodology: Current constituents, not point-in-time membership. History starts 2019-05-13 and can carry survivorship or constituent-change bias.
Market Signal
Equal-Weight S&P 500 vs Cap-Weight
This chart shows whether the average S&P 500 stock is keeping up with the cap-weighted index or falling behind it.
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The latest series values are listed below the chart. Visible-window CSV and full-history JSON downloads are available above.
Use Value for the raw series and % from view start to rebase the first visible value in the current window to 0%.
Historical Context
Toggle the market-event markers above when you want to line recent regime shifts up with the signal.
How To Read It
- If equal weight rises with the index, participation is broadening across the average stock.
- If cap weight keeps winning while equal weight stalls, leadership is getting narrower and concentration is doing more of the work.
- This chart is most useful near highs, when headline strength can hide weak internals.
ChartVault keeps the chart free and focused. The broader interpretation and setups continue in the publications below.