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. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Polen Capital Management, Renaissance Technologies LLC, Parnassus Endeavor Fund, Lone Pine Capital, and Sequoia Financial Advisors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2023Renaissance Technologies LLCSell-1,935,300835,905$45,214
Q2 2023Dodge & Cox Stock FundSell-6,71098,880$5,348,419
Q2 2023Sequoia Financial AdvisorsBuy99817,335$937,650
Q2 2023Parnassus Endeavor FundSell-6447,429$401,835
Q2 2023Mairs & Power Growth FundBuy2810,796$583,956
Q1 2023Viking Global InvestorsSell-8,391,7121,136,881$56,878,156
Q1 2023Dodge & Cox Stock FundSell-7,300105,590$5,282,668
Q1 2023Parnassus Endeavor FundBuy2,9168,073$403,892
Q1 2023Sequoia Financial AdvisorsBuy1,57516,337$817,341
Q4 2022Parnassus Endeavor FundSell-15,686,8025,157$238,614
Q4 2022Viking Global InvestorsSell-6,634,3289,528,593$440,887,998
Q4 2022Sequoia Financial AdvisorsBuy8,42614,762$683,061
Q4 2022Dodge & Cox Stock FundSell-2,700112,890$5,223,420
Q3 2022Viking Global InvestorsBuy1,508,96716,162,921$625,990
Q3 2022Mairs & Power Growth FundBuy5,43110,768$417
Q3 2022Dodge & Cox Stock FundSell-5,000115,590$4,477
Q3 2022Sequoia Financial AdvisorsBuy1,1326,336$245
Q2 2022Viking Global InvestorsBuy1,814,81214,653,954$546,153
Q2 2022Parnassus Endeavor FundSell-42,79115,691,959$584,839
Q1 2022Viking Global InvestorsSell-6,122,35912,839,142$568,646
Q1 2022Parnassus Endeavor FundBuy194,21915,734,750$696,892
Q1 2022Sequoia Financial AdvisorsBuy5,2045,204$230
Q1 2022Dodge & Cox Stock FundSell-5,000120,590$5,341
Q1 2022Mairs & Power Growth FundBuy5695,337$236
Q4 2021Viking Global InvestorsBuy12,095,09618,961,501$805,485
Q4 2021Parnassus Endeavor FundSell-23,42315,540,531$660,162
Q4 2021Dodge & Cox Stock FundSell-4,500125,590$5,335
Q3 2021Viking Global InvestorsSell-6,449,4116,866,405$297,933
Q3 2021Parnassus Endeavor FundBuy451,19415,563,954$675,320
Q3 2021Mairs & Power Growth FundSell-2,0504,768$207

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.

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