Intuitive Surgical, Inc.
MX ˙ BMV ˙ US46120E6023
SecurityMX:ISRG / Intuitive Surgical, Inc.
InstitutionFred Alger Management, Llc
Latest Disclosed Ownership386,739 shares
Latest Disclosed Value $ 178,282,812
Fred Alger Management, Llc reports 10.19% increase in ownership of ISRG / Intuitive Surgical, Inc.

On May 15, 2026 - Fred Alger Management, Llc filed a 13F-HR form disclosing ownership of 386,739 shares of Intuitive Surgical, Inc. (MX:ISRG) valued at $178,282,812 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 350,972 shares of Intuitive Surgical, Inc.. This represents a change in shares of 10.19% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F Intuitive Surgical Equity 46120E602 386,739 35,767 10.19 178,283 -10.31 0.4982
2026-02-17 2025-12-31 13F Intuitive Surgical Equity 46120E602 350,972 81,062 30.03 198,777 64.67 0.7796
2025-11-14 2025-09-30 13F Intuitive Surgical Equity 46120E602 269,910 -53,200 -16.46 120,712 -31.25 0.4698
2025-08-14 2025-06-30 13F Intuitive Surgical Equity 46120E602 323,110 -9,773 -2.94 175,581 6.50 0.7859
2025-05-16 2025-03-31 13F Intuitive Surgical Equity 46120E602 332,883 -17,567 -5.01 164,867 -9.87 0.9389
2025-02-14 2024-12-31 13F Intuitive Surgical Equity 46120E602 350,450 -18,791 -5.09 182,921 0.84 0.8716
2024-11-14 2024-09-30 13F INTUITIVE SURGICAL Common 46120E602 369,241 -23,002 -5.86 181,397 3.96 0.8793
2024-08-14 2024-06-30 13F INTUITIVE SURGICAL Common 46120E602 392,243 -5,375 -1.35 174,489 9.96 0.8483
2024-05-15 2024-03-31 13F INTUITIVE SURGICAL Common 46120E602 397,618 -22,026 -5.25 158,685 12.09 0.7869
2024-02-14 2023-12-31 13F INTUITIVE SURGICAL Common 46120E602 419,644 48,885 13.19 141,571 30.64 0.7638
2023-11-14 2023-09-30 13F INTUITIVE SURGICAL Common 46120E602 370,759 -77,413 -17.27 108,369 -29.28 0.5745
2023-11-14 2023-09-30 13F INTUITIVE SURGICAL Common 46120E602 370,759 108,369
2023-08-14 2023-06-30 13F INTUITIVE SURGICAL Common 46120E602 448,172 -25,884 -5.46 153,248 26.54 0.7828
2023-05-16 2023-03-31 13F/A-1 INTUITIVE SURGICAL Common 46120E602 474,056 26,340 5.88 121,107 1.94 0.6477
2023-05-15 2023-03-31 13F INTUITIVE SURGICAL Common 46120E602 474,056 26,340 121,107 0.6006
2023-02-14 2022-12-31 13F INTUITIVE SURGICAL Common 46120E602 447,716 -122 -0.03 118,801 41.53 0.6439
2022-11-15 2022-09-30 13F INTUITIVE SURGICAL Common 46120E602 447,838 -402,571 -47.34 83,943 -50.82 0.4253
2022-08-15 2022-06-30 13F INTUITIVE SURGICAL Common 46120E602 850,409 -232,819 -21.49 170,686 -47.77 0.7971
2022-05-16 2022-03-31 13F INTUITIVE SURGICAL Common 46120E602 1,083,228 255,120 30.81 326,788 9.83 1.0440
2022-02-14 2021-12-31 13F INTUITIVE SURGICAL Common 46120E602 828,108 544,857 192.36 297,539 5.66 0.7454
2021-11-15 2021-09-30 13F INTUITIVE SURGICAL Common 46120E602 283,251 -142,702 -33.50 281,594 -28.11 0.6714
2021-08-16 2021-06-30 13F INTUITIVE SURGICAL Common 46120E602 425,953 172,964 68.37 391,723 109.54 0.9246
2021-05-17 2021-03-31 13F INTUITIVE SURGICAL Common 46120E602 252,989 28,204 12.55 186,944 1.66 0.4891
2021-02-16 2020-12-31 13F INTUITIVE SURGICAL Common 46120E602 224,785 156,902 231.14 183,897 281.80 0.4785
2020-11-13 2020-09-30 13F INTUITIVE SURGICAL Common 46120E602 67,883 -12,478 -15.53 48,166 5.18 0.1398
2020-08-14 2020-06-30 13F INTUITIVE SURGICAL Common 46120E602 80,361 -30,883 -27.76 45,792 -16.88 0.1509
2020-05-19 2020-03-31 13F/A-1 INTUITIVE SURGICAL Common 46120E602 111,244 3,438 3.19 55,089 -13.56 0.2421
2020-05-15 2020-03-31 13F INTUITIVE SURGICAL Common 46120E602 111,244 3,438 55,089 242,378.1170
2020-02-14 2019-12-31 13F INTUITIVE SURGICAL Common 46120E602 107,806 -83,108 -43.53 63,730 -38.17 0.2346
2019-11-14 2019-09-30 13F INTUITIVE SURGICAL Common 46120E602 190,914 -85,985 -31.05 103,080 -29.03 0.4045
2019-08-14 2019-06-30 13F INTUITIVE SURGICAL Common 46120E602 276,899 -76,146 -21.57 145,247 -27.90 0.5579
2019-05-14 2019-03-31 13F INTUITIVE SURGICAL Common 46120E602 353,045 -25,207 -6.66 201,440 11.20 0.8022
2019-02-14 2018-12-31 13F INTUITIVE SURGICAL Common 46120E602 378,252 133,746 54.70 181,152 29.08 0.8339
2018-11-14 2018-09-30 13F INTUITIVE SURGICAL Common 46120E602 244,506 -2,866 -1.16 140,346 18.57 0.5269
2018-07-19 2018-06-30 13F INTUITIVE SURGICAL Common 46120E602 247,372 40,909 19.81 118,363 38.87 0.4969
2018-05-10 2018-03-31 13F INTUITIVE SURGICAL Common 46120E602 206,463 -28,195 -12.02 85,234 -0.47 0.3963
2018-02-14 2017-12-31 13F INTUITIVE SURGICAL Common 46120E602 234,658 213,748 1,022.23 85,636 291.59 0.3865
2017-11-14 2017-09-30 13F INTUITIVE SURGICAL Common 46120E602 20,910 105 0.50 21,869 12.38 0.1023
2017-08-14 2017-06-30 13F INTUITIVE SURGICAL Common 46120E602 20,805 2,503 13.68 19,460 38.72 0.0929
2017-05-15 2017-03-31 13F INTUITIVE SURGICAL Common 46120E602 18,302 -3,275 -15.18 14,028 2.52 0.0698
2017-02-14 2016-12-31 13F INTUITIVE SURGICAL Common 46120E602 21,577 1,859 9.43 13,683 -4.26 0.0745
2016-11-14 2016-09-30 13F INTUITIVE SURGICAL Common 46120E602 19,718 -28,272 -58.91 14,292 -54.97 0.0734
2016-08-15 2016-06-30 13F INTUITIVE SURGICAL Common 46120E602 47,990 1,178 2.52 31,741 12.81 0.1676
2016-05-16 2016-03-31 13F INTUITIVE SURGICAL Common 46120E602 46,812 31,038 196.77 28,136 226.59 0.1425
2016-02-16 2015-12-31 13F INTUITIVE SURGICAL Common 46120E602 15,774 -6,890 -30.40 8,615 -17.29 0.0419
2015-11-16 2015-09-30 13F INTUITIVE SURGICAL Common 46120E602 22,664 22,064 3,677.33 10,416 3,479.38 0.0568
2015-08-14 2015-06-30 13F INTUITIVE SURGICAL Common 46120E602 600 -61,933 -99.04 291 -99.08 0.0013
2015-05-15 2015-03-31 13F INTUITIVE SURGICAL Common 46120E602 62,533 57,223 1,077.65 31,581 1,024.28 0.1422
2015-02-17 2014-12-31 13F INTUITIVE SURGICAL Common 46120E602 5,310 5,310 0.00 2,809 0.0135
2014-11-14 2014-09-30 13F INTUITIVE SURGICAL Common 46120E602 0 -14 -100.00 0 -100.00
2014-08-14 2014-06-30 13F INTUITIVE SURGICAL Common 46120E602 14 0 0.00 6 0.00 0.0000
2014-05-15 2014-03-31 13F INTUITIVE SURGICAL Common 46120E602 14 0 0.00 6 20.00 0.0000
2014-02-14 2013-12-31 13F INTUITIVE SURGICAL Common 46120E602 14 0 0.00 5 0.00 0.0000
2013-11-14 2013-09-30 13F INTUITIVE SURGICAL Common 46120E602 14 14 5 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.