The passive ownership share is double what you think it is

Alex Chinco and Marco Sammon

Journal of Financial Economics, 2024, vol. 157, issue C

Abstract: Each time a stock gets added to or dropped from an index, we ask: “How much money would have to be tracking that index to explain the huge spike in rebalancing volume we observe on reconstitution day?” While index funds held 16% of the US stock market in 2021, we put the overall passive ownership share at 33.5%. Our headline number is twice as large because it reflects index funds as well as other kinds of passive investors, such as institutional investors with internally managed index portfolios and active managers who are closet indexing.

Keywords: Passive ownership; Index-linked investing; Prearranged trades; Index funds; Internal indexing; Reconstitution day; G11; G14; G23 (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:jfinec:v:157:y:2024:i:c:s0304405x24000837

DOI: 10.1016/j.jfineco.2024.103860

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