This Day In Market History: S&P 500 Index Overhauled To Market Cap-Weighted Structure
Each day, Benzinga takes a look back at a notable market-related moment that occurred on this date.
What Happened? On April 6, 1988, the S&P 500 index was overhauled and changed to a market cap-weighted structure.
Where The Market Was: The Dow ended the day at 2,061.