{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T10:05:43Z","timestamp":1790330743924,"version":"4.1.0"},"posted":{"date-parts":[[2026]]},"group-title":"SSRN","reference-count":0,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.uspto.gov\/ip-policy\/copyright-policy\/copyright-basics"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>The rapid growth of exchange-traded funds (ETFs) has raised important questions about the role of ETF flows in the pricing and performance of underlying equities. Using the transparency of the ETF structure, we examine the relationship between past ETF flows and subsequent stock returns. While short-term mean reversion effects are well documented, evidence on longer-term effects remains limited.&amp;nbsp; \n&lt;div&gt;\n &lt;br&gt;\n&lt;\/div&gt;\n&lt;div&gt;\n Based on a broad dataset covering a substantial share of the global ETF market capitalization, we find that flows from thematic and sectoral ETFs are associated with distinct return patterns across investment horizons, with short-term reversal effects and longer-term trend-following dynamics particularly visible in U.S. equities. Building on these findings, we construct a systematic cross-sectional equity signal that combines shortand long-horizon ETF flow information. The resulting portfolios exhibit meaningful return dispersion and low correlation with traditional equity factors, suggesting that ETF flows may provide a complementary source of information for stock selection and systematic portfolio construction. The effects are weaker in European equities, where ETF ownership remains lower.\n&lt;\/div&gt;<\/jats:p>","DOI":"10.2139\/ssrn.7517178","type":"posted-content","created":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T09:36:44Z","timestamp":1790329004000},"source":"Crossref","is-referenced-by-count":0,"title":["ETF Flows and Stock Market Dynamics: Patterns, Signals and Portfolio Construction Insights"],"prefix":"10.2139","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-7111-6629","authenticated-orcid":true,"given":"In&egrave;s","family":"Barahhou","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abitbol","family":"Sacha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","container-title":[],"original-title":[],"deposited":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T09:36:44Z","timestamp":1790329004000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ssrn.com\/abstract=7517178"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":0,"URL":"https:\/\/doi.org\/10.2139\/ssrn.7517178","relation":{},"subject":[],"published":{"date-parts":[[2026]]},"subtype":"preprint"}}