Intuitive Surgical, Inc.
MX ˙ BMV ˙ US46120E6023
SecurityMX:ISRG / Intuitive Surgical, Inc.
InstitutionAsset Management One Co., Ltd.
Latest Disclosed Ownership196,215 shares
Latest Disclosed Value $ 90,453,153
Asset Management One Co., Ltd. reports 0.17% decrease in ownership of ISRG / Intuitive Surgical, Inc.

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 196,215 shares of Intuitive Surgical, Inc. (MX:ISRG) valued at $90,453,153 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 196,557 shares of Intuitive Surgical, Inc.. This represents a change in shares of -0.17% 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)
2026-05-08 2026-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 196,215 -342 -0.17 90,453 -20.01 0.2667
2026-01-27 2025-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 196,557 2,994 1.55 113,079 30.63 0.3144
2025-10-22 2025-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 193,563 -37 -0.02 86,567 -17.72 0.2508
2025-07-31 2025-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 193,600 1,602 0.83 105,204 10.64 0.3298
2025-04-23 2025-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 191,998 9,439 5.17 95,091 -2.62 0.3289
2025-01-30 2024-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 182,559 2,106 1.17 97,647 10.15 0.3355
2024-10-30 2024-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 180,453 3,511 1.98 88,651 12.63 0.3155
2024-07-18 2024-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 176,942 -1,001 -0.56 78,713 10.84 0.3011
2024-05-02 2024-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 177,943 -6,340 -3.44 71,015 13.88 0.2737
2024-01-24 2023-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 184,283 12,024 6.98 62,360 23.85 0.2510
2023-10-19 2023-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 172,259 -2,154 -1.23 50,350 -15.58 0.2242
2023-07-31 2023-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 174,413 -2,543 -1.44 59,639 31.92 0.2524
2023-04-25 2023-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 176,956 78 0.04 45,207 -4.54 0.2049
2023-02-06 2022-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 176,878 -6,552 -3.57 47,354 37.73 0.2308
2022-11-04 2022-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 183,430 -1,917 -1.03 34,382 -7.58 0.1749
2022-07-29 2022-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 185,347 -169 -0.09 37,200 -33.53 0.1747
2022-05-13 2022-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 185,516 -3,836 -2.03 55,966 -19.04 0.2185
2022-02-09 2021-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 189,352 126,878 203.09 69,131 11.31 0.2408
2021-11-02 2021-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 62,474 -1,232 -1.93 62,108 6.01 0.2381
2021-08-03 2021-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 63,706 -201 -0.31 58,586 24.06 0.2180
2021-05-14 2021-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 63,907 -209 -0.33 47,223 -9.54 0.1875
2021-02-12 2020-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 64,116 -118 -0.18 52,202 14.54 0.2150
2020-11-13 2020-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 64,234 -356 -0.55 45,577 23.82 0.2095
2020-08-14 2020-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 64,590 -468 -0.72 36,808 14.24 0.1810
2020-05-14 2020-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 65,058 129 0.20 32,220 -16.06 0.1881
2020-02-14 2019-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 64,929 -3,258 -4.78 38,383 4.24 0.1730
2019-11-14 2019-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 68,187 1,818 2.74 36,820 5.77 0.1774
2019-08-14 2019-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 66,369 5,068 8.27 34,812 -0.47 0.1710
2019-05-15 2019-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 61,301 -133,283 -68.50 34,976 -62.41 0.1891
2019-02-13 2018-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 194,584 6,940 3.70 93,051 -13.58 0.2218
2018-11-14 2018-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 187,644 4,817 2.63 107,667 23.01 0.2210
2018-08-14 2018-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 182,827 -3,368 -1.81 87,529 13.87 0.1913
2018-05-14 2018-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 186,195 1,781 0.97 76,867 14.15 0.1731
2018-02-14 2017-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 184,414 120,925 190.47 67,341 1.56 0.1486
2017-11-14 2017-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 63,489 1,230 1.98 66,309 13.89 0.1557
2017-08-14 2017-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 62,259 -1,156 -1.82 58,222 19.78 0.1486
2017-05-11 2017-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 63,415 -4,979 -7.28 48,606 12.03 0.1276
2017-05-02 2016-12-31 13F/A-1 INTUITIVE SURGICAL COM NEW 46120E602 68,394 64,839 1,823.88 43,385 1,594.06 0.1109
2017-02-13 2016-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 68,394 43,385
2016-11-07 2016-09-30 13F INTUITIVE SURGICAL Com 46120E602 3,555 93 2.69 2,561 12.42 0.0380
2016-08-03 2016-06-30 13F INTUITIVE SURGICAL Com 46120E602 3,462 0 0.00 2,278 9.94 0.0342
2016-05-05 2016-03-31 13F INTUITIVE SURGICAL Com 46120E602 3,462 0 0.00 2,072 8.42 0.0302
2016-01-28 2015-12-31 13F INTUITIVE SURGICAL Com 46120E602 3,462 0 0.00 1,911 21.10 0.0285
2015-11-12 2015-09-30 13F INTUITIVE SURGICAL Com 46120E602 3,462 0 0.00 1,578 -5.79 0.0240
2015-08-06 2015-06-30 13F INTUITIVE SURGICAL Com 46120E602 3,462 0 0.00 1,675 -4.39 0.0232
2015-05-11 2015-03-31 13F INTUITIVE SURGICAL COM 46120E602 3,462 -360 -9.42 1,752 -13.44 0.0216
2015-02-09 2014-12-31 13F INTUITIVE SURGICAL COM 46120E602 3,822 -38 -0.98 2,024 12.95 0.0263
2014-11-05 2014-09-30 13F INTUITIVE SURGICAL COM 46120E602 3,860 0 0.00 1,792 10.07 0.0247
2014-08-12 2014-06-30 13F INTUITIVE SURGICAL COM 46120E602 3,860 -580 -13.06 1,628 -15.73 0.0243
2014-05-05 2014-03-31 13F INTUITIVE SURGICAL COM 46120E602 4,440 -538 -10.81 1,932 2.01 0.0304
2014-02-05 2013-12-31 13F/A-1 INTUITIVE SURGICAL COM 46120E602 4,978 -488 -8.93 1,894 -5.86 0.0294
2014-01-29 2013-12-31 13F INTUITIVE SURGICAL COM 46120E602 4,978 1,894
2014-02-05 2013-09-30 13F/A-1 INTUITIVE SURGICAL Com 46120E602 5,466 534 10.83 2,012 -18.74 0.0303
2013-11-06 2013-09-30 13F INTUITIVE SURGICAL Com 46120E602 5,466 2,012
2014-02-12 2013-06-30 13F/A-1 INTUITIVE SURGICAL Com 46120E602 4,932 4,932 2,476 0.0402
2013-08-05 2013-06-30 13F INTUITIVE SURGICAL Com 46120E602 4,932 2,476
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.