Intuitive Surgical ISRG
$452.80 −$15.72 (-3.36%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $453.85 +0.23%
Open$457.00
Prev close$468.52
Day range$450.51 – $463.25
Volume2.15M
Market cap$156.96B
P/E (TTM)54.8
Dividend yield–
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership90.4%+1.74 pts vs. prior quarter
Institutions holding2,762-8 vs. prior quarter
Insider trades (recent)22 buys / 28 sellsNet selling
ARK fund activity+6,411 sh1 recent transactions · last 20 Oct 2026
Short interest2.07% of floatDays to cover 4.1 · as of 15 Oct 2026
Short-sale volume share12.7%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: +$20.17M (13 inflow days, 7 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 27.0% of shares outstanding.
Largest holders
By investor type
Reported short interest has risen from 1.87% to 2.07% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Assenagon Asset Management S.A. | Mutual Fund | 2026/Q3 | +558,099 | 0.4% |
| Arrowstreet Capital, Limited Partnership | Mutual Fund | 2026/Q3 | +1,638,953 | 1.1% |
| Invesco Capital Management LLC | Mutual Fund | 2026/Q3 | +977,446 | 3.2% |
| GQG Partners, LLC | Mutual Fund | 2026/Q3 | +780,428 | 0.2% |
| The Goldman Sachs Group, Inc. | Public Company | 2026/Q3 | +641,983 | 0.3% |
| Jennison Associates LLC | Mutual Fund | 2026/Q3 | +628,201 | 1.1% |
| Morgan Stanley | Public Company | 2026/Q3 | +622,883 | 1.0% |
| D1 Capital Partners L.P. | Hedge Fund | 2026/Q3 | +574,200 | 0.2% |
| Two Sigma Investments, LP | Hedge Fund | 2026/Q3 | +573,794 | 0.6% |
| Alyeska Investment Group, L.P. | Hedge Fund | 2026/Q3 | +564,426 | 0.3% |
| Squarepoint OPS LLC | Hedge Fund | 2026/Q3 | +506,935 | 0.2% |
| Jane Street Group, LLC | Private Company | 2026/Q3 | +501,131 | 0.2% |
| First Trust Advisors L.P. | Mutual Fund | 2026/Q3 | +437,161 | 0.2% |
| Renaissance Technologies Corp. | Hedge Fund | 2026/Q3 | +365,028 | 0.1% |
| SG Americas Securities, LLC | Private Company | 2026/Q3 | +288,482 | 0.2% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 22 Oct 2026 | Craig Barratt | Lead Independent Director | Derivative Exercise and Sale | -1,150 | $443.80 | 27,948 |
| 22 Oct 2026 | Gary Guthart | Executive Chairperson | Automatic Disposition | -20,095 | $451.61 | 1,257,024 |
| 22 Oct 2026 | Patricia Wadors | Chief Human Resources Officer | Automatic Disposition | -1,078 | $443.80 | – |
| 22 Oct 2026 | Fredrik Widman | VP, Principal Accounting Officer & Corporate Controller | Derivative Exercise and Sale | -4,047 | $453.21 | 1,026 |
| 9 Oct 2026 | Patricia Wadors | Chief Human Resources Officer | Derivative Exercise and Sale | -1,062 | $423.96 | 1,078 |
| 9 Oct 2026 | Patricia Wadors | Chief Human Resources Officer | Derivative Exercise and Retained | +1,078 | – | 1,078 |
| 9 Oct 2026 | Gary Loeb | Executive VP and Chief Legal & Compliance Officer | Derivative Exercise and Sale | -1,296 | $423.96 | 6,636 |
| 9 Oct 2026 | Gary Loeb | Executive VP and Chief Legal & Compliance Officer | Derivative Exercise and Retained | +1,316 | – | 6,636 |
| 14 Sep 2026 | Fredrik Widman | VP, Principal Accounting Officer & Corporate Controller | Derivative Exercise and Sale | -1,089 | $374.44 | 1,026 |
| 10 Sep 2026 | Mark Brosius | EVP, Chief Manufacturing & Supply Chain Officer | Automatic Disposition | -48 | $365.79 | 764 |
| 8 Sep 2026 | Mark Brosius | EVP, Chief Manufacturing & Supply Chain Officer | Automatic Disposition | -69 | $361.23 | 812 |
| 20 Aug 2026 | Mark Brosius | EVP, Chief Manufacturing & Supply Chain Officer | Automatic Disposition | -154 | $396.37 | 881 |
| 18 Aug 2026 | Mark Brosius | EVP, Chief Manufacturing & Supply Chain Officer | Automatic Disposition | -231 | $394.26 | 1,035 |
| 10 Aug 2026 | Gary Guthart | Executive Chairperson | Automatic Disposition | -10,000 | $400.00 | 1,277,119 |
| 10 Aug 2026 | Amy Ladd | Independent Director | Automatic Disposition | -472 | $393.10 | 179 |
| 9 Aug 2026 | Amy Ladd | Independent Director | Intent to Sell (Form 144) | -472 | $378.81 | – |
| 9 Aug 2026 | Gary Loeb | Executive VP and Chief Legal & Compliance Officer | Automatic Disposition | -400 | $379.00 | 5,320 |
| 30 Jul 2026 | Mark Brosius | EVP, Chief Manufacturing & Supply Chain Officer | Automatic Disposition | -56 | $351.00 | 1,266 |
| 28 Jul 2026 | Mark Brosius | EVP, Chief Manufacturing & Supply Chain Officer | Automatic Disposition | -84 | $365.58 | 1,322 |
| 9 Jul 2026 | David Rosa | Chief Executive Officer | Derivative Exercise and Sale | -947 | $411.55 | 246,856 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 7,325,463 | 2.1% | 4.1 |
| 30 Sep 2026 | 7,411,662 | 2.1% | 3.2 |
| 15 Sep 2026 | 8,117,017 | 2.3% | 3.4 |
| 31 Aug 2026 | 7,727,998 | 2.2% | 3.7 |
| 14 Aug 2026 | 7,069,998 | 2.0% | 2.3 |
| 31 Jul 2026 | 6,620,078 | 1.9% | 1.4 |
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