Articles

Global & Regional Equity Indices: From the S&P 500 to Tadawul and Borsa Istanbul

Stock indices are built from three different weighting families: price-weighted, market-cap-weighted and free-float-weighted. Meet the S&P 500, Saudi Arabia's Tadawul and Borsa Istanbul 100, and see why their numbers can never be compared directly to Tehran's non-free-float headline index.