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Stacked area

S&P 500 Sector Weights Over Time

Each GICS sector’s share of the combined market value of today’s S&P 500 companies, %, end of each month, stacked

Information Technology: 36.1% in Oct 2026+12.1 pp since Jan 2021
YTD1y2y5y10y20yAll
Current·Data to Oct 2026

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

Calculated by Palanor: each company’s closing price × its current share count, from licensed closing prices and SEC filings, summed by GICS sector over today’s S&P 500 members. Applying today’s members and sectors to past dates leaves out companies that have since left the index (survivorship bias). Not S&P Dow Jones Indices’ official, float-adjusted sector weights.

How the value of today’s S&P 500 companies divides among the eleven sectors, month by month. Information Technology is the largest; a rising band means that sector’s stocks did better than the rest of the index.

What this chart reads·11 series

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Sources·11 sources

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S&P 500 Sector Weight: Information Technology. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Financials. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Communication Services. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Health Care. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Consumer Discretionary. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Industrials. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Consumer Staples. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Energy. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Utilities. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Real Estate. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

S&P 500 Sector Weight: Materials. Source: Closing prices received through a licensed market data provider; share counts from company filings with the SEC (public domain); sectors from the public S&P 500 constituent list (GICS sectors). Calculated by Palanor. Display only: not available through the Palanor API.

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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