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. 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. Wikipedia