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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- INTUITIVE SURGICAL INC (ISRG) stock institutional ownership
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q2 2014 | Olstein Capital Management | Buy | 5,000 | 17,000 | $7,001 |
| Q2 2014 | Renaissance Technologies LLC | Sell | -45,100 | 63,400 | $26,108 |
| Q2 2014 | Disciplined Growth Investors | Buy | 81,877 | 162,809 | $62,532 |
| Q1 2014 | Olstein Capital Management | Sell | -1,000 | 12,000 | $5,256 |
| Q1 2014 | Renaissance Technologies LLC | Sell | -100,220 | 108,500 | $47,522 |
| Q1 2014 | Disciplined Growth Investors | Sell | -83,142 | 80,932 | $39,753 |
| Q4 2013 | Olstein Capital Management | Buy | 2,000 | 13,000 | $4,993 |
| Q4 2013 | Renaissance Technologies LLC | Sell | -246,850 | 208,720 | $80,165 |
| Q4 2013 | Disciplined Growth Investors | Buy | 8,000 | 164,074 | $63,018 |
| Q3 2013 | Olstein Capital Management | Buy | 11,000 | 11,000 | $4,139 |
| Q3 2013 | Viking Global Investors | Sell | -1,498,627 | 210,426 | $79,176 |
| Q3 2013 | Renaissance Technologies LLC | Buy | 224,700 | 455,570 | $171,417 |
| Q3 2013 | Disciplined Growth Investors | Buy | 67,467 | 156,074 | $58,726 |
| Q2 2013 | Polen Capital Management | Buy | 311,340 | 311,340 | $157,719 |
| Q2 2013 | Renaissance Technologies LLC | Buy | 230,870 | 230,870 | $116,851 |
| Q2 2013 | Lone Pine Capital | Buy | 1,161,068 | 1,161,068 | $587,654 |
| Q2 2013 | Viking Global Investors | Buy | 1,709,053 | 1,709,053 | $865,006 |
| Q2 2013 | Muhlenkamp & Co | Buy | 2,308 | 2,308 | $1,168 |
| Q2 2013 | Disciplined Growth Investors | Buy | 88,607 | 88,607 | $44,847 |
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.