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Intuitive Surgical Inc

ISRG
Exchange
Nasdaq
Industry
Orthopedic, Prosthetic & Surgical Appliances & Supplies
SEC CIK
0001035267

In the last 90 days, Intuitive Surgical Inc insiders filed 0 open-market purchases and 14 sales; 2,273 institutions reported holding it in 13F filings for Q2 2026, worth $122.0B in total; 3 superinvestors hold it, including Coatue Management and D1 Capital Partners.

Four kinds of short-selling data, each measuring something different:

  • Short interest: shares sold short and not yet bought back, as of a settlement date. FINRA publishes it twice a month, about eight business days after the settlement date.
  • Daily short volume: shares sold short each day in off-exchange trades reported to FINRA. It counts trades, not open positions, and is published the next day.
  • Fails-to-deliver: shares not delivered by the settlement date. The SEC publishes them twice a month, about two weeks late.
  • ATS (dark pool) volume: weekly volume on alternative trading systems and other off-exchange venues. FINRA publishes it two to four weeks after the week.

More in the glossary.

Short interest

Shares sold short and not yet bought back, from FINRA, on every settlement date in the last two years.

Short interest
7.33M
Shares, settlement Oct 15, 2026
Change
−86.2K
−1.2% vs. Sep 30, 2026
Days to cover
4.05
Short interest ÷ average daily volume
Average daily volume
1.81M
Shares, as reported by FINRA
Short interest by settlement date
Oct 15, 2024: 3,550,255 sharesOct 31, 2024: 3,850,554 sharesNov 15, 2024: 4,153,981 sharesNov 29, 2024: 3,463,762 sharesDec 13, 2024: 3,698,940 sharesDec 31, 2024: 4,398,463 sharesJan 15, 2025: 4,272,941 sharesJan 31, 2025: 4,219,756 sharesFeb 14, 2025: 4,412,034 sharesFeb 28, 2025: 4,818,517 sharesMar 14, 2025: 4,846,639 sharesMar 31, 2025: 4,605,266 sharesApr 15, 2025: 4,504,821 sharesApr 30, 2025: 4,609,368 sharesMay 15, 2025: 4,844,306 sharesMay 30, 2025: 3,906,867 sharesJun 13, 2025: 3,979,218 sharesJun 30, 2025: 4,066,050 sharesJul 15, 2025: 3,873,887 sharesJul 31, 2025: 4,296,723 sharesAug 15, 2025: 4,978,114 sharesAug 29, 2025: 5,435,064 sharesSep 15, 2025: 5,715,392 sharesSep 30, 2025: 8,224,603 sharesOct 15, 2025: 7,388,032 sharesOct 31, 2025: 6,854,495 sharesNov 14, 2025: 7,453,367 sharesNov 28, 2025: 7,170,088 sharesDec 15, 2025: 6,976,993 sharesDec 31, 2025: 7,443,768 sharesJan 15, 2026: 7,140,130 sharesJan 30, 2026: 7,171,500 sharesFeb 13, 2026: 6,602,962 sharesFeb 27, 2026: 6,611,189 sharesMar 13, 2026: 6,347,786 sharesMar 31, 2026: 6,753,396 sharesApr 15, 2026: 6,665,406 sharesApr 30, 2026: 6,690,532 sharesMay 15, 2026: 6,706,878 sharesMay 29, 2026: 7,266,942 sharesJun 15, 2026: 7,801,999 sharesJun 30, 2026: 7,322,479 sharesJul 15, 2026: 6,708,471 sharesJul 31, 2026: 6,620,078 sharesAug 14, 2026: 7,069,998 sharesAug 31, 2026: 7,727,998 sharesSep 15, 2026: 8,117,017 sharesSep 30, 2026: 7,411,662 sharesOct 15, 2026: 7,325,463 shares
Short interest in ISRG by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 15, 20267.33M−86.2K−1.2%1.81M4.05
Sep 30, 20267.41M−705.4K−8.7%2.35M3.15
Sep 15, 20268.12M+389.0K+5.0%2.42M3.35
Aug 31, 20267.73M+658.0K+9.3%2.07M3.74
Aug 14, 20267.07M+449.9K+6.8%3.02M2.34
Jul 31, 20266.62M−88.4K−1.3%4.78M1.39
Jul 15, 20266.71M−614.0K−8.4%2.77M2.42
Jun 30, 20267.32M−479.5K−6.2%2.72M2.69
Jun 15, 20267.80M+535.1K+7.4%2.48M3.14
May 29, 20267.27M+560.1K+8.4%2.32M3.13
May 15, 20266.71M+16.3K+0.2%2.26M2.97
Apr 30, 20266.69M+25.1K+0.4%2.57M2.60
Apr 15, 20266.67M−88.0K−1.3%1.67M3.98
Mar 31, 20266.75M+405.6K+6.4%1.61M4.20
Mar 13, 20266.35M−263.4K−4.0%1.76M3.61
Feb 27, 20266.61M+8.23K+0.1%1.47M4.51
Feb 13, 20266.60M−568.5K−7.9%2.54M2.60
Jan 30, 20267.17M+31.4K+0.4%2.24M3.20
Jan 15, 20267.14M−303.6K−4.1%1.87M3.81
Dec 31, 20257.44M+466.8K+6.7%1.38M5.41
Dec 15, 20256.98M−193.1K−2.7%1.53M4.57
Nov 28, 20257.17M−283.3K−3.8%1.86M3.86
Nov 14, 20257.45M+598.9K+8.7%2.16M3.45
Oct 31, 20256.85M−533.5K−7.2%3.00M2.28
Oct 15, 20257.39M−836.6K−10.2%2.07M3.56
Sep 30, 20258.22M+2.51M+43.9%2.51M3.27
Sep 15, 20255.72M+280.3K+5.2%2.75M2.08
Aug 29, 20255.44M+456.9K+9.2%1.87M2.91
Aug 15, 20254.98M+681.4K+15.9%1.94M2.56
Jul 31, 20254.30M+422.8K+10.9%2.28M1.88
Jul 15, 20253.87M−192.2K−4.7%1.60M2.42
Jun 30, 20254.07M+86.8K+2.2%1.64M2.47
Jun 13, 20253.98M+72.4K+1.9%1.92M2.07
May 30, 20253.91M−937.4K−19.4%1.33M2.95
May 15, 20254.84M+234.9K+5.1%1.45M3.34
Apr 30, 20254.61M+104.5K+2.3%2.17M2.12
Apr 15, 20254.50M−100.4K−2.2%3.00M1.50
Mar 31, 20254.61M−241.4K−5.0%2.22M2.08
Mar 14, 20254.85M+28.1K+0.6%3.08M1.57
Feb 28, 20254.82M+406.5K+9.2%1.65M2.93
Feb 14, 20254.41M+192.3K+4.6%1.24M3.57
Jan 31, 20254.22M−53.2K−1.2%2.31M1.82
Jan 15, 20254.27M−125.5K−2.9%1.58M2.70
Dec 31, 20244.40M+699.5K+18.9%1.42M3.11
Dec 13, 20243.70M+235.2K+6.8%1.14M3.25
Nov 29, 20243.46M−690.2K−16.6%1.22M2.85
Nov 15, 20244.15M+303.4K+7.9%1.42M2.93
Oct 31, 20243.85M+300.3K+8.5%1.40M2.74
Oct 15, 20243.55M−189.1K−5.1%1.00M3.54

Fails-to-deliver

Shares that weren't delivered by the settlement date, from the SEC, for the last 30 dates with fails. The price is the previous day's closing price published by the SEC.

Fails-to-deliver in ISRG by settlement date
Settlement dateSharesPriceValue
Oct 13, 20261,217$427.64$520.4K
Oct 8, 20266$414.52$2.49K
Oct 6, 202615$406.48$6.10K
Sep 28, 20261,203$405.18$487.4K
Sep 24, 202641,276$398.30$16.4M
Sep 22, 2026611$401.65$245.4K
Sep 21, 20261,600$393.33$629.3K
Aug 21, 202620$374.48$7.49K
Aug 17, 20261,207$394.51$476.2K
Aug 13, 202619,943$401.27$8.00M
Aug 7, 2026293$373.71$109.5K
Aug 3, 20266,707$353.33$2.37M
Jul 24, 202613,782$332.02$4.58M
Jul 23, 20261,544$340.69$526.0K
Jul 22, 20264,297$350.06$1.50M
Jul 20, 20262$345.42$690.84
Jul 17, 20262,507$402.33$1.01M
Jul 16, 20264,406$388.97$1.71M
Jul 9, 202620$415.10$8.30K
Jun 25, 2026261$401.83$104.9K
Jun 23, 202699,281$402.95$40.0M
Jun 22, 20261,185$406.78$482.0K
Jun 18, 2026297$402.18$119.4K
Jun 17, 202611$417.07$4.59K
Jun 12, 20266,388$412.90$2.64M
Jun 8, 2026100$422.06$42.2K
Jun 2, 20261$412.26$412.26
Jun 1, 2026114$424.64$48.4K
May 29, 20268,594$423.63$3.64M
May 20, 20262,911$441.58$1.29M

Daily short volume

Off-exchange short-sale volume, not short interest: shares sold short each day in trades reported to FINRA, for the last 30 trading days.

The short volume ratio isn't a sentiment gauge: market makers sell short to fill buy orders and to hedge, so short sales are usually about half of off-exchange volume.

Off-exchange short volume in ISRG by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 9, 2026420,608874877,66347.9%
Nov 6, 2026349,1441,052777,14844.9%
Nov 5, 2026930,8985,6901,831,60950.8%
Nov 4, 20261,152,01634,1161,995,11257.7%
Nov 3, 2026250,4331,580683,15836.7%
Nov 2, 2026411,7454,1681,442,24728.5%
Oct 30, 2026461,2194,1751,021,75045.1%
Oct 29, 2026344,6501,627777,69544.3%
Oct 28, 2026304,5021,935668,78145.5%
Oct 27, 2026304,1733,610628,30048.4%
Oct 26, 2026346,5142,6391,257,65627.6%
Oct 23, 2026918,26326,9141,355,15267.8%
Oct 22, 2026647,5866511,160,13855.8%
Oct 21, 20261,280,9935982,079,26661.6%
Oct 20, 2026655,2682,1991,072,51161.1%
Oct 19, 2026663,5956391,005,94166.0%
Oct 16, 2026643,059314969,08566.4%
Oct 15, 2026367,26095859,85942.7%
Oct 14, 2026322,322376730,96944.1%
Oct 13, 2026304,1411,416701,26543.4%
Oct 12, 2026338,2141,517659,74551.3%
Oct 9, 2026465,40478786,16259.2%
Oct 8, 2026515,7051,093878,19758.7%
Oct 7, 2026483,206536808,66959.8%
Oct 6, 2026304,748638537,95656.6%
Oct 5, 2026375,1762,143651,14857.6%
Oct 2, 2026293,0004,897702,16541.7%
Oct 1, 2026270,499210633,70342.7%
Sep 30, 2026285,3281,377643,88244.3%
Sep 29, 2026356,9561,378795,75044.9%

ATS (dark pool) volume

Weekly volume on alternative trading systems (ATS) and other off-exchange (OTC) venues, from FINRA, for the last 12 weeks. ATS share is ATS volume ÷ (ATS + OTC volume), not a share of all trading.

Weekly ATS and OTC volume in ISRG
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 19, 2026T14,925,852140,5593,313,18689,04259.8%
Oct 12, 2026T12,850,80388,3601,822,18859,05861.0%
Oct 5, 2026T12,531,49388,1351,761,52167,17259.0%
Sep 28, 2026T12,686,44590,9281,705,96183,90761.2%
Sep 21, 2026T13,000,57688,6742,042,05764,63359.5%
Sep 14, 2026T13,614,264106,2322,369,80069,45460.4%
Sep 7, 2026T13,554,711103,4362,616,40080,19757.6%
Aug 31, 2026T12,371,67385,8182,188,96073,72152.0%
Aug 24, 2026T12,081,44786,1601,698,06466,12755.1%
Aug 17, 2026T13,198,639107,3232,174,22274,13359.5%
Aug 10, 2026T14,036,799125,9421,839,99477,28268.7%
Aug 3, 2026T14,156,000119,8632,135,48583,29666.1%