A drop in the bucket: Indexing's share of U.S. trading activity

April 5, 2019


Despite its growing popularity among investors, indexing is responsible for approximately 1%–5% of the overall trading volume. Our research team breaks down the implications of the rise in the popularity of passive investing.

Use this research to:

  • Discover why we believe the trading volume attributed to index fund investing is overstated.
  • Learn the methodology our researchers used to calculate the trading volume of index fund investors.
  • Understand why the shift from active to passive investments has had only a minimal impact on trading activity.


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