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S&P 500 Top-10 Concentration

Weight of the 10 largest holdings in the S&P 500, %

38.0% on Oct 22, 2026+16.4 pp since Sep 30, 2019
YTD1y2y5y10y20yAll
Forecast availableOffContinuationForesight™
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U.S. recessionsShades the months the NBER dates as recession. U.S. charts only.5-year rangeThe highest and lowest readings of the last five years, as a band. One-series charts only.High and lowMarks the highest and lowest readings in the window shown.
Current·Data to Oct 22, 2026

Plays the chart through its history. Pauses are where the data set a record or moved most.

Quarter-ends come from SPY’s SEC filings; days between filings are estimated from closing prices.

How much of the S&P 500 sits in its ten biggest stocks. Concentration has risen as the largest technology companies have grown.

What this chart reads

Sources

S&P 500 Top-10 Concentration. Source: SPDR S&P 500 ETF Trust (CIK 884394), Form N-PORT-P holdings filed with the SEC (sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000884394&type=NPORT-P). The SEC: "Information presented on sec.gov is considered public information and may be copied or further distributed by users of the web site without the SEC's permission." Daily estimates are Palanor's computation using licensed closing prices. Quarter-end values back to 2019; daily values from 2021.

Charts are drawn from Palanor's signal library and recomputed from source data on every view. Transformations (changes, indexing, year-on-year rates) are Palanor's.

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