← Browse all charts Is the average stock keeping up with the index?
Methodology: Current constituents, not point-in-time membership. History starts 2019-03-21 and can carry survivorship or constituent-change bias.
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.
The deep history is for NASDUCK paid members.
This free chart covers the last five years. Everything older, plus the CSV and JSON downloads, comes with a paid NASDUCK subscription.
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The latest series values and a keyboard-readable date table are below the chart. CSV and JSON downloads are for NASDUCK paid members.
Use Value for the raw series and % from view start to rebase the first visible value in the current window to 0%.
Dates & readable data
Selected historical events
Curated anchors for market context, rather than a complete news feed. Toggle markers above to place them on the chart.
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.
Next step This chart shows the market. Dig for Stocks picks the stocks.
Breadth and sector charts tell you the weather. They just can't tell you which stock to hold for the next 10 days - that's the whole job of the Dig for Stocks algorithm.