BOSTON SCIENTIFIC CORP (BSX) Institutional Ownership Changes & 13F Activity

BOSTON SCIENTIFIC CORP (BSX). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Assenagon Asset Management S.A., State Street Corp, Allianz Asset Management Gmbh, Citadel Advisors Llc, and Anchor Capital Advisors Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Envestnet Asset Management IncSell-228,033-13.5%1,458,786$62.26MQ2 2026Sep 23, 2026
Qrg Capital Management, Inc.Buy+198,951+121.5%362,716$15.48MQ2 2026Sep 23, 2026
Envestnet Portfolio Solutions, Inc.Sell-8,791-8.3%96,782$4.12MQ2 2026Sep 23, 2026
State Street CorpBuy+2,124,349+3.1%70,111,196$2.99BQ2 2026Sep 22, 2026
Andra Ap-FondenSell-27,800-16.4%142,128$6.07MQ2 2026Sep 22, 2026
Silicon Valley Capital PartnersSell-26-0.5%5,599$238.97KQ2 2026Sep 21, 2026
Skyview Investment Advisors, LlcBuy+2,500—2,500$107.00Q2 2026Sep 15, 2026
Anchor Investment Management, LlcSell-327-18.2%1,468$62.65KQ2 2026Sep 15, 2026
Manufacturers Life Insurance Company, TheBuy+72,970+2.8%2,702,583$115.35MQ2 2026Sep 09, 2026
Integrated Wealth Concepts LlcSell-5,812-19.1%24,600$1.05MQ2 2026Sep 09, 2026
Parkside Financial Bank & TrustBuy+344+8.1%4,616$197.01KQ2 2026Sep 04, 2026
Anchor Capital Advisors LlcSell-283,694-61.2%180,002$7.68MQ2 2026Sep 03, 2026
Allianz Asset Management GmbhSell-1,364,084-57.0%1,029,740$43.95MQ2 2026Sep 02, 2026
Citadel Advisors LlcBuy+770,434+18.3%4,987,748$212.88MQ2 2026Sep 02, 2026
Brown, Lisle/Cummings, Inc.Buy+2,015+2.7%77,778$3.32MQ2 2026Sep 02, 2026
Cornerstone Financial Management LlcBuy+100+55.6%280$11.95KQ2 2026Aug 28, 2026
Corient Private Wealth LlcBuy+47,125+25.3%233,728$9.98MQ2 2026Aug 27, 2026
Brown Financial AdvisorsBuy+7,749+59.0%20,881$891.20KQ2 2026Aug 26, 2026
Groupe La FrancaiseBuy+39,419—39,419$1.68MQ2 2026Aug 25, 2026
California State Teachers Retirement SystemSell-29,358-1.3%2,270,596$96.91MQ2 2026Aug 24, 2026
Cyber Hornet Etfs LlcSell-24-0.6%4,052$172.94KQ2 2026Aug 24, 2026
Assenagon Asset Management S.A.Sell-5,884,377-58.5%4,173,559$178.13MQ2 2026Aug 21, 2026
Jackson Wealth Management, LlcSell-41,939-88.8%5,306$226.00KQ2 2026Aug 20, 2026
Harvest Fund Management Co., LtdBuy+5,670+70875.0%5,678$242.00KQ2 2026Aug 20, 2026
Rehmann Capital Advisory GroupBuy+3,672+65.8%9,249$394.49KQ2 2026Aug 20, 2026
Mercer Global Advisors IncBuy+10,654+5.4%206,605$8.82MQ2 2026Aug 19, 2026
Kingsview Wealth Management, LlcSell-1,621-23.1%5,395$230.26KQ2 2026Aug 19, 2026
Glenview Trust CoBuy+32,757+14.8%254,089$10.84MQ2 2026Aug 18, 2026
Rakuten Investment Management, Inc.Buy+23,034+10.5%243,100$10.57MQ2 2026Aug 18, 2026
Beacon Pointe Advisors, LlcSell-5,939-27.3%15,843$679.06KQ2 2026Aug 18, 2026
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Frequently asked questions about BSX activity

  • Which institutional owners are buying BSX?

    Institutional owners buying BSX include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in BSX activity?

    "Buy" means an investor increased their reported position in BSX compared to the prior reporting period. This reflects growing exposure to BOSTON SCIENTIFIC CORP (BSX) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in BSX increasing?

    Institutional interest in BSX can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.