ISRG Intuitive Surgical, Inc.
$369.15
Intuitive Surgical, Inc. (ISRG) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Hedge fund breadth
+5.88
36 buyers / 32 sellers
MIXED
Funds compared
69
funds with comparable ISRG positions
60 current holders · 62 prior-quarter holders
Net share change
+641.4K
+4.02M added, -3.38M cut
Position activity
7 new
29 increased
23 reduced
9 exited
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| RTW Investments Growth Healthcare | Sold Out | -220.0K | -100.0% | $87.5M | 0.0% | 72 |
| D1 Capital Partners L.P. | New | +574.2K | — | $228.3M | 0.7% | 72 |
| Integral Health Asset Management Growth Healthcare | Sold Out | -35.0K | -100.0% | $13.9M | 0.0% | 64 |
| Alyeska Investment Group, L.P. | Increased | +564.4K | +112.6% | $224.5M | 1.2% | 64 |
| Readystate Asset Management Long/Short | New | +70.8K | — | $28.2M | 1.9% | 63 |
| WORLDQUANT MILLENNIUM ADVISORS LLC Quant | Increased | +397.8K | +166.4% | $158.2M | 0.9% | 62 |
| RENAISSANCE TECHNOLOGIES LLC Quant | Increased | +365.0K | +261.9% | $145.2M | 0.3% | 62 |
| SurgoCap Partners Long/Short Growth | Reduced | -76.1K | -22.8% | $30.3M | 3.3% | 61 |
| Squarepoint Ops LLC Quant | Increased | +506.9K | +212.8% | $201.6M | 0.7% | 60 |
| Davidson Kempner Capital Management Event Value | Sold Out | -7.7K | -100.0% | $3.1M | 0.0% | 59 |
Most significant buyers
By move score, not size.
- D1 Capital Partners L.P.
- Alyeska Investment Group, L.P.
- Readystate Asset Management
- WORLDQUANT MILLENNIUM ADVISORS LLC
- RENAISSANCE TECHNOLOGIES LLC
Most significant sellers
By move score, not size.
- RTW Investments
- Integral Health Asset Management
- SurgoCap Partners
- Davidson Kempner Capital Management
- HBK Investments
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| RTW Investments | 1 | 0 | 220.0K | -220.0K | -100.0% | 0.0% | Sold Out | 72 |
| D1 Capital Partners L.P. | 1 | 574.2K | 0 | +574.2K | — | 0.7% | New | 72 |
| Integral Health Asset Management | 2 | 0 | 35.0K | -35.0K | -100.0% | 0.0% | Sold Out | 64 |
| Alyeska Investment Group, L.P. | 2 | 1.1M | 501.4K | +564.4K | +112.6% | 1.2% | Increased | 64 |
| Readystate Asset Management | 3 | 70.8K | 0 | +70.8K | — | 1.9% | New | 63 |
| WORLDQUANT MILLENNIUM ADVISORS LLC | 2 | 636.8K | 239.0K | +397.8K | +166.4% | 0.9% | Increased | 62 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 504.4K | 139.4K | +365.0K | +261.9% | 0.3% | Increased | 62 |
| SurgoCap Partners | 2 | 257.0K | 333.0K | -76.1K | -22.8% | 3.3% | Reduced | 61 |
| Squarepoint Ops LLC | 2 | 745.2K | 238.3K | +506.9K | +212.8% | 0.7% | Increased | 60 |
| Davidson Kempner Capital Management | 2 | 0 | 7.7K | -7.7K | -100.0% | 0.0% | Sold Out | 59 |
| HBK Investments | 1 | 0 | 2.0K | -2.0K | -100.0% | 0.0% | Sold Out | 58 |
| Point72 Asset Management, L.P. | 1 | 167.7K | 635.3K | -467.6K | -73.6% | 0.1% | Reduced | 57 |
| Quadrature Capital | 3 | 26.3K | 0 | +26.3K | — | 0.1% | New | 57 |
| Hudson Bay Capital Management | 3 | 327.0K | 100.0K | +227.0K | +227.0% | 0.7% | Increased | 57 |
| Weiss Asset Management | 2 | 0 | 12.6K | -12.6K | -100.0% | 0.0% | Sold Out | 57 |
| Capula Management | 2 | 0 | 200 | -200 | -100.0% | 0.0% | Sold Out | 56 |
| CITADEL ADVISORS LLC | 1 | 470.1K | 1.4M | -885.9K | -65.3% | 0.1% | Reduced | 56 |
| Magnetar Capital | 2 | 1.8K | 0 | +1.8K | — | 0.0% | New | 55 |
| Jain Global | 3 | 0 | 16.8K | -16.8K | -100.0% | 0.0% | Sold Out | 54 |
| Trexquant Investment | 3 | 252.7K | 63.6K | +189.1K | +297.3% | 0.6% | Increased | 54 |
| Balyasny Asset Management L.P. | 2 | 11.0K | 128.7K | -117.8K | -91.5% | 0.0% | Reduced | 54 |
| Caption Management | 3 | 0 | 8.0K | -8.0K | -100.0% | 0.0% | Sold Out | 53 |
| Caxton Associates | 3 | 0 | 696 | -696 | -100.0% | 0.0% | Sold Out | 53 |
| Aquatic Capital Management | 4 | 82.9K | 7.8K | +75.1K | +964.5% | 1.1% | Increased | 52 |
| CenterBook Partners | 4 | 2.7K | 0 | +2.7K | — | 0.1% | New | 51 |
| Centiva Capital | 4 | 4.2K | 0 | +4.2K | — | 0.1% | New | 51 |
| MILLENNIUM MANAGEMENT LLC | 2 | 413.3K | 910.3K | -497.0K | -54.6% | 0.1% | Reduced | 50 |
| ADAR1 Capital Management | 3 | 6.0K | 1.8K | +4.2K | +229.5% | 0.1% | Increased | 50 |
| Schonfeld Strategic Advisors | 3 | 39.5K | 14.2K | +25.3K | +178.5% | 0.1% | Increased | 49 |
| Alphadyne Asset Management | 3 | 15.8K | 3.7K | +12.1K | +326.3% | 0.4% | Increased | 49 |
| Boothbay Fund Management | 4 | 2.2K | 0 | +2.2K | — | 0.0% | New | 49 |
| Verition Fund Management | 2 | 4.8K | 31.5K | -26.7K | -84.7% | 0.0% | Reduced | 49 |
| MARSHALL WACE, LLP | 2 | 110.1K | 320.0K | -209.9K | -65.6% | 0.1% | Reduced | 49 |
| LMR Partners | 3 | 6.4K | 3.3K | +3.2K | +96.9% | 0.0% | Increased | 48 |
| Lighthouse Investment Partners | 3 | 8.5K | 1.3K | +7.2K | +542.9% | 0.1% | Increased | 47 |
| TWO SIGMA INVESTMENTS, LP | 2 | 2.0M | 1.4M | +573.8K | +40.8% | 0.6% | Increased | 47 |
| Perceptive Advisors | 1 | 51.9K | 85.4K | -33.5K | -39.3% | 0.3% | Reduced | 47 |
| Engineers Gate | 4 | 34.0K | 5.6K | +28.5K | +509.1% | 0.2% | Increased | 47 |
| OrbiMed Advisors | 2 | 157.9K | 208.7K | -50.8K | -24.3% | 1.2% | Reduced | 47 |
| Voloridge Investment Management | 2 | 67.0K | 38.0K | +29.0K | +76.4% | 0.1% | Increased | 46 |
| Brevan Howard Capital Management | 3 | 20.7K | 2.6K | +18.0K | +682.3% | 0.2% | Increased | 46 |
| Holocene Advisors, LP | 2 | 781.5K | 1.0M | -258.7K | -24.9% | 0.7% | Reduced | 45 |
| D. E. Shaw & Co., Inc. | 1 | 340.3K | 576.5K | -236.2K | -41.0% | 0.1% | Reduced | 44 |
| Man Group | 3 | 143.5K | 82.4K | +61.1K | +74.2% | 0.1% | Increased | 44 |
| Parallax Volatility Advisers | 3 | 6 | 543 | -537 | -98.9% | 0.0% | Reduced | 44 |
| Quantbot Technologies | 4 | 18.2K | 983 | +17.2K | +1753.1% | 0.3% | Increased | 43 |
| COATUE MANAGEMENT LLC | 1 | 793.7K | 855.2K | -61.5K | -7.2% | 0.6% | Reduced | 43 |
| Gotham Asset Management, LLC | 2 | 25.3K | 15.6K | +9.7K | +62.6% | 0.0% | Increased | 41 |
| Wolverine Asset Management | 2 | 5.9K | 11.2K | -5.3K | -47.2% | 0.1% | Reduced | 38 |
| Qube Research & Technologies Ltd | 2 | 403.4K | 294.9K | +108.4K | +36.8% | 0.2% | Increased | 38 |
| Rock Springs Capital Management | 3 | 76.5K | 82.0K | -5.5K | -6.8% | 1.5% | Reduced | 37 |
| Braidwell | 2 | 70.1K | 77.3K | -7.2K | -9.3% | 1.1% | Reduced | 37 |
| Capital Fund Management | 3 | 100.3K | 143.2K | -42.9K | -30.0% | 0.3% | Reduced | 36 |
| ExodusPoint Capital Management | 3 | 58.0K | 89.0K | -31.0K | -34.8% | 0.2% | Reduced | 36 |
| Graham Capital Management | 3 | 2.3K | 5.1K | -2.8K | -54.9% | 0.0% | Reduced | 35 |
| Capstone Investment Advisors | 3 | 11.8K | 8.5K | +3.3K | +38.6% | 0.1% | Increased | 34 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 327.7K | 379.9K | -52.2K | -13.7% | 0.2% | Reduced | 33 |
| Bridgewater Associates | 1 | 19.3K | 17.3K | +2.0K | +11.7% | 0.0% | Increased | 33 |
| Voleon Capital Management | 3 | 8.9K | 14.9K | -5.9K | -40.0% | 0.1% | Reduced | 33 |
| Suvretta Capital Management | 2 | 13.6K | 11.3K | +2.3K | +20.4% | 0.1% | Increased | 32 |
| AQR Capital Management | 3 | 336.8K | 258.9K | +77.9K | +30.1% | 0.0% | Increased | 31 |
| Tudor Investment Corporation | 2 | 46.8K | 37.8K | +9.0K | +23.9% | 0.1% | Increased | 31 |
| Woodline Partners LP | 2 | 102.9K | 87.2K | +15.7K | +18.0% | 0.1% | Increased | 30 |
| Armistice Capital | 3 | 48.8K | 52.0K | -3.2K | -6.2% | 0.5% | Reduced | 29 |
| Chilton Investment Company | 2 | 1.4K | 1.6K | -170 | -10.9% | 0.0% | Reduced | 26 |
| Cinctive Capital Management | 3 | 20.5K | 18.4K | +2.0K | +11.0% | 0.3% | Increased | 24 |
| Y-Intercept | 4 | 36.2K | 32.0K | +4.2K | +13.3% | 0.3% | Increased | 24 |
| Walleye Capital | 3 | 7.9K | 6.8K | +1.0K | +14.9% | 0.0% | Increased | 24 |
| Systematic Alpha Investments | 2 | 1.0K | 1.0K | 0 | +0.0% | 0.0% | Unchanged | 18 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.