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
Q2 2019Sequoia Financial AdvisorsBuy3681,043$547
Q2 2019ARK InvestBuy5085,434$2,850
Q2 2019Disciplined Growth InvestorsSell-22,698344,230$180,566
Q1 2019Sequoia Financial AdvisorsBuy150675$385
Q1 2019Disciplined Growth InvestorsSell-2,992366,928$209,362
Q4 2018ARK InvestBuy1,3174,926$2,359
Q4 2018Sequoia Financial AdvisorsBuy5525$251
Q4 2018Renaissance Technologies LLCSell-452,000230,500$110,391
Q4 2018Disciplined Growth InvestorsSell-15,486369,920$177,162
Q3 2018ARK InvestBuy3793,609$2,072
Q3 2018Disciplined Growth InvestorsBuy4,255385,406$221,223
Q3 2018Renaissance Technologies LLCSell-799,510682,500$391,755
Q2 2018ARK InvestBuy3,2303,230$1,545
Q2 2018Disciplined Growth InvestorsSell-20,230381,151$182,373
Q1 2018Sequoia Financial AdvisorsBuy520520$215
Q1 2018Olstein Capital ManagementSell-4,6003,400$1,404
Q1 2018Disciplined Growth InvestorsSell-19,187401,381$165,702
Q1 2018Renaissance Technologies LLCBuy41,4101,482,010$611,818
Q4 2017Olstein Capital ManagementBuy4,6008,000$2,920
Q4 2017Disciplined Growth InvestorsBuy279,752420,568$153,482
Q4 2017Renaissance Technologies LLCBuy1,012,0001,440,600$525,733
Q3 2017Olstein Capital ManagementSell-8003,400$3,556
Q3 2017Disciplined Growth InvestorsSell-2,766140,816$147,277
Q3 2017Renaissance Technologies LLCBuy121,500428,600$448,264
Q2 2017Olstein Capital ManagementSell-4,4004,200$3,929
Q2 2017Disciplined Growth InvestorsSell-15,322143,582$134,302
Q2 2017Renaissance Technologies LLCBuy112,130307,100$287,252
Q1 2017Olstein Capital ManagementSell-3,7008,600$6,592
Q1 2017Renaissance Technologies LLCSell-4,921194,970$149,439
Q1 2017Disciplined Growth InvestorsSell-111158,904$121,795

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.