The U.S. Equities Index Components dataset provides point-in-time constituent records for major U.S. equity indexes, including the Dow Jones Industrial Average, Dow Jones Transportation Average, Dow Jones Utility Average, S&P 500, NASDAQ 100, Russell 1000, and Russell 2000. The dataset captures each index’s daily component membership. Historical coverage begins in 2007, with Russell index constituents available from July 2009 onward, reflecting their index history. For each index, the dataset includes: a daily components reference representing membership on each trading day, and a separate historical change table recording all constituent additions and removals over time.

Note: This dataset is intended solely for research and historical backtesting. The actual changes in the index members might be delayed by a few days.