INTUITIVE SURGICAL INC (ISRG) Stock Institutional Trading Activity


INTUITIVE SURGICAL INC (ISRG) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Polen Capital Management, Mairs & Power Growth Fund, Renaissance Technologies LLC, Disciplined Growth Investors, and ARK Invest. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2016Olstein Capital ManagementBuy5,30012,300$7,800
Q4 2016Renaissance Technologies LLCBuy117,621199,891$126,765
Q4 2016Disciplined Growth InvestorsBuy1,820159,015$100,843
Q3 2016Olstein Capital ManagementSell-1,0007,000$5,074
Q3 2016Renaissance Technologies LLCBuy50,03282,270$59,632
Q3 2016Disciplined Growth InvestorsSell-1,237157,195$113,940
Q2 2016Olstein Capital ManagementSell-1,4008,000$5,291
Q2 2016Renaissance Technologies LLCSell-75,53232,238$21,323
Q2 2016Disciplined Growth InvestorsSell-334158,432$104,789
Q1 2016Olstein Capital ManagementSell-1,6009,400$5,650
Q1 2016Renaissance Technologies LLCSell-1,400107,770$64,775
Q1 2016Disciplined Growth InvestorsSell-6,075158,766$95,426
Q4 2015Olstein Capital ManagementSell-1,50011,000$6,008
Q4 2015Renaissance Technologies LLCSell-93,426109,170$59,624
Q4 2015Disciplined Growth InvestorsSell-2,065164,841$90,030
Q3 2015Olstein Capital ManagementBuy50012,500$5,745
Q3 2015Renaissance Technologies LLCBuy75,557202,596$93,109
Q3 2015Disciplined Growth InvestorsBuy1,445166,906$76,707
Q2 2015Olstein Capital ManagementBuy1,00012,000$5,814
Q2 2015Renaissance Technologies LLCSell-101,231127,039$61,550
Q2 2015Disciplined Growth InvestorsBuy1,095165,461$80,166
Q1 2015Renaissance Technologies LLCBuy153,770228,270$115,283
Q1 2015Disciplined Growth InvestorsSell-1,560164,366$83,010
Q4 2014Olstein Capital ManagementSell-4,00011,000$5,818
Q4 2014Renaissance Technologies LLCBuy29,43074,500$39,406
Q4 2014Disciplined Growth InvestorsSell-2,130165,926$87,765
Q3 2014Dodge & Cox Stock FundBuy500500$231
Q3 2014Olstein Capital ManagementSell-2,00015,000$6,927
Q3 2014Renaissance Technologies LLCSell-18,33045,070$20,814
Q3 2014Disciplined Growth InvestorsBuy5,247168,056$77,612

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.