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  • Management Science

Passive Ownership and Price Informativeness

By: Marco Sammon
  • | Pages:17
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Abstract

I show that passive ownership negatively affects the degree to which stock prices anticipate earnings announcements. Estimates across several research designs imply that the rise in passive ownership over the last 30 years has caused the amount of information incorporated into prices ahead of earnings announcements to decline by roughly 16%. This effect occurs in part because passive owners collect less firm-specific information ahead of earnings announcements and limits to arbitrage prevent non-passive investors from fully offsetting this behavior.

Keywords

Passive Ownership; ETFs; Market Efficiency; Price; Investment Funds; Stocks; Communication

Citation

Sammon, Marco. "Passive Ownership and Price Informativeness." Management Science (forthcoming). (Pre-published online September 17, 2024.)
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About The Author

Marco Sammon

Finance
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More from the Author
  • Index Rebalancing and Stock Market Composition: Do Indexes Time the Market? By: Marco Sammon and John J. Shim
  • First Citizens’ Acquisition of SVB By: Samuel Antill, Marco Sammon and Erik Stafford
  • The Disappearing Index Effect By: Robin Greenwood and Marco Sammon
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