Markets

Where the weight is, and what it did

The current S&P 500. Each security's size is how much of the market it represents; its 1 year return is the colour on the treemap and a number in the table.

Universe

Window

Measure

Universe: S&P 500 · 495 companies · grouped by GICS sector · Data through Sep 14, 2026

2 secondary share classes folded into the primary listing so each company is sized once: FOX → FOXA, GOOG → GOOGL.

Return

-35%

-16%

-3%

16%

35%

clipped at ±56.4%

Treemap displays 493 of 495 companies with market-cap data, sized by market cap and coloured by 1 year return through 2026-09-14. The other 2 are in the index but cannot be drawn without a size, and inventing one would put a fabricated area on the page. The Table lists them. Colour saturates at ±56.4% (the 90th percentile of absolute move); anything beyond that clips to the end of the scale. Click any tile to open it in the screener.

Performance shown is backtested and hypothetical. It does not represent actual trading and may not reflect the impact that material economic and market factors might have had on decision-making. Backtested results are calculated from March 1996 through the most recent weekly data. Past performance is not indicative of future results. This is not investment advice. All investments carry risk, including possible loss of principal. The strategy uses survivorship-bias-aware constituent data — delisted and failed companies are included in the backtest.