Intuitive Surgical, Inc.
US ˙ NasdaqGS ˙ US46120E6023

SecurityISRG / Intuitive Surgical, Inc.
InstitutionOMERS ADMINISTRATION Corp
Latest Disclosed Ownership289,024 shares
Latest Disclosed Value $ 133,237,174
OMERS ADMINISTRATION Corp reports 98.40% increase in ownership of ISRG / Intuitive Surgical, Inc.

On May 15, 2026 - OMERS ADMINISTRATION Corp filed a 13F-HR form disclosing ownership of 289,024 shares of Intuitive Surgical, Inc. (US:ISRG) valued at $133,237,174 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 145,679 shares of Intuitive Surgical, Inc.. This represents a change in shares of 98.40% during the quarter. The current value of the position is $117,716,585 USD.

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 COM NEW 46120E602 289,024 143,345 98.40 133,237 61.49 0.8567
2026-02-13 2025-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 145,679 108,465 291.46 82,507 395.74 0.5880
2025-11-14 2025-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 37,214 22,577 154.25 16,643 109.27 0.1192
2025-08-13 2025-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 14,637 -5,368 -26.83 7,954 -19.72 0.0625
2025-05-14 2025-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 20,005 -5,666 -22.07 9,908 -26.06 0.0867
2025-02-14 2024-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 25,671 2,119 9.00 13,399 15.81 0.1172
2024-11-13 2024-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 23,552 -10,378 -30.59 11,570 -23.34 0.1065
2024-08-13 2024-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 33,930 13,224 63.87 15,094 82.66 0.1454
2024-05-14 2024-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 20,706 -2,207 -9.63 8,264 6.91 0.0945
2024-02-13 2023-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 22,913 10,021 77.73 7,730 105.12 0.0976
2023-11-13 2023-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 12,892 12,892 3,768 0.0567
2019-08-08 2019-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 0 -1,100 -100.00 0 -100.00
2019-05-15 2019-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 1,100 1,100 650 0.0075
2019-02-14 2018-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 0 -10,500 -100.00 0 -100.00
2018-11-14 2018-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 10,500 -3,400 -24.46 6,027 -9.38 0.0577
2018-08-09 2018-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 13,900 -2,700 -16.27 6,651 -2.95 0.0614
2018-05-11 2018-03-31 13F INTUITIVE SURGICAL COM NEW 46120E602 16,600 -1,300 -7.26 6,853 4.91 0.0667
2018-05-14 2017-12-31 13F/A-1 INTUITIVE SURGICAL COM NEW 46120E602 17,900 14,200 383.78 6,532 68.79 0.0652
2018-02-13 2017-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 17,900 14,200 6,532
2018-05-14 2017-09-30 13F/A-1 INTUITIVE SURGICAL COM NEW 46120E602 3,700 1,200 48.00 3,870 65.53 0.0428
2017-11-13 2017-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 3,700 1,200 3,870
2017-08-08 2017-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 2,500 2,500 2,338 0.0295
2016-02-11 2015-12-31 13F INTUITIVE SURGICAL COM NEW 46120E602 0 0 0 0.0000
2015-11-12 2015-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 0 -1,200 -100.00 0 -100.00
2015-08-11 2015-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 1,200 1,200 -52.00 581 -75.15 0.0231
2014-11-10 2014-09-30 13F INTUITIVE SURGICAL COM NEW 46120E602 0 -800 -100.00 0 -100.00
2014-08-11 2014-06-30 13F INTUITIVE SURGICAL COM NEW 46120E602 800 800 329 0.0107
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.