The S&P/TSX Composite Index (INDEXTSI:OSPTX) is the principal market measure for the Canadian equities market, and is calculated and managed by S&P Dow Jones Indices.
The index, which was launched in 1977, includes both common stocks and income trust units.
How is the S&P/TSX Composite Index calculated? The weightings of the index’s securities are decided through float-adjusted market capitalization. In this method, market cap is determined by share price and the amount of outstanding shares available to the general public — restricted shares owned by other publicly held companies or company executives are excluded.
What are the S&P/TSX Composite Index’s eligibility requirements?
The S&P/TSX Composite Index is reviewed each quarter; at that time, additions or removals can be made. To be eligible for addition, the company needs to be incorporated, formed or established…


