S&P/TSX Composite Index
              < S&P 
 
            
          | S&P/TSX Composite Index 1960–2012 | |
| Foundation | May 1, 2001 after replacing the TSX300 which started in 1945 | 
|---|---|
| Operator | S&P Dow Jones Indices | 
| Exchanges | Toronto Stock Exchange | 
| Trading symbol | ^GSPTSE | 
| Constituents | 237 | 
| Type | Large cap | 
| Weighting method | Price-weighted index | 
| Website | www | 
The S&P/TSX Composite Index is the benchmark Canadian stock market index representing roughly 70% of the total market capitalization on the Toronto Stock Exchange (TSX). Having replaced the TSE 300 Composite Index on May 1, 2002, as of September 20, 2021 the S&P/TSX Composite Index comprises 237 of the 3,451 companies listed on the TSX. The index reached an all-time closing high of 25,691.80 on December 6, 2024, and an intraday record high of 25,843.20 on December 9, 2024.