INTUITIVE SURGICAL INC (ISRG) Institutional Ownership Changes & 13F Activity

INTUITIVE SURGICAL INC (ISRG) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Polen Capital Management, Mairs & Power Growth Fund, ARK Invest, Renaissance Technologies LLC, and Disciplined Growth Investors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2015Olstein Capital ManagementBuy1,00012,000$5,814
Q1 2015Renaissance Technologies LLCBuy153,770228,270$115,283
Q1 2015Disciplined Growth InvestorsSell-1,560164,366$83,010
Q4 2014Renaissance Technologies LLCBuy29,43074,500$39,406
Q4 2014Olstein Capital ManagementSell-4,00011,000$5,818
Q4 2014Disciplined Growth InvestorsSell-2,130165,926$87,765
Q3 2014Renaissance Technologies LLCSell-18,33045,070$20,814
Q3 2014Disciplined Growth InvestorsBuy5,247168,056$77,612
Q3 2014Olstein Capital ManagementSell-2,00015,000$6,927
Q3 2014Dodge & Cox Stock FundBuy500500$231
Q2 2014Disciplined Growth InvestorsBuy81,877162,809$62,532
Q2 2014Renaissance Technologies LLCSell-45,10063,400$26,108
Q2 2014Olstein Capital ManagementBuy5,00017,000$7,001
Q1 2014Renaissance Technologies LLCSell-100,220108,500$47,522
Q1 2014Disciplined Growth InvestorsSell-83,14280,932$39,753
Q1 2014Olstein Capital ManagementSell-1,00012,000$5,256
Q4 2013Renaissance Technologies LLCSell-246,850208,720$80,165
Q4 2013Disciplined Growth InvestorsBuy8,000164,074$63,018
Q4 2013Olstein Capital ManagementBuy2,00013,000$4,993
Q3 2013Viking Global InvestorsSell-1,498,627210,426$79,176
Q3 2013Renaissance Technologies LLCBuy224,700455,570$171,417
Q3 2013Disciplined Growth InvestorsBuy67,467156,074$58,726
Q3 2013Olstein Capital ManagementBuy11,00011,000$4,139
Q2 2013Viking Global InvestorsBuy1,709,0531,709,053$865,006
Q2 2013Lone Pine CapitalBuy1,161,0681,161,068$587,654
Q2 2013Polen Capital ManagementBuy311,340311,340$157,719
Q2 2013Renaissance Technologies LLCBuy230,870230,870$116,851
Q2 2013Disciplined Growth InvestorsBuy88,60788,607$44,847
Q2 2013Muhlenkamp & CoBuy2,3082,308$1,168

Frequently asked questions about ISRG activity

  • Which institutional owners are buying ISRG?

    Institutional owners buying ISRG 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 ISRG activity?

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

  • Is institutional interest in ISRG increasing?

    Institutional interest in ISRG 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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