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Jim Simons's Intuitive Surgical, Inc. (ISRG) position

Yes: as of Q1 2026, Jim Simons holds 139K shares of ISRG worth $63M (0.1% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$63M
Shares held
139K
% of portfolio
0.1%
Est. average buy price (i)
$480.27
Quarter-end price
$453.12

Estimated trade prices

Average price in quarters with purchases
$341.11
Average prices in quarters with sales
  • Q1 2026: $506.18 (13K shares sold)
  • Q4 2025: $532.54 (42K shares sold)
  • Q4 2024: $520.85 (85K shares sold)
  • Q4 2023: $298.09 (95K shares sold)

ISRG price vs Simons's position

1Y 3Y 5Y MAX
Dates
$100$200$400$600$80020222023202420252026Added 37K shares (55.8%) · Q3 2021. Average closing price $335.80 · Price range $309.15–$360.8537KsharespurchasedAdded 111K shares (107.7%) · Q4 2021. Average closing price $344.06 · Price range $319.93–$365.42111KsharespurchasedNew position of 93K shares · Q2 2022. Average closing price $234.60 · Price range $190.71–$305.5493KsharespurchasedAdded 31K shares (33.5%) · Q3 2022. Average closing price $214.77 · Price range $186.38–$242.4631KsharespurchasedNew position of 412K shares · Q1 2023. Average closing price $246.36 · Price range $224.75–$271.36412KsharespurchasedNew position of 233K shares · Q3 2023. Average closing price $312.30 · Price range $284.35–$354.93233KsharespurchasedSold 95K shares (40.5%) · Q4 2023. Average closing price $298.09 · Price range $258.49–$338.3995KsharessoldNew position of 92K shares · Q3 2024. Average closing price $465.55 · Price range $416.14–$494.0192KsharespurchasedSold 85K shares (91.7%) · Q4 2024. Average closing price $520.85 · Price range $471.23–$550.6285KsharessoldAdded 107K shares (over 1,000%) · Q1 2025. Average closing price $553.02 · Price range $476.78–$610.45107KsharespurchasedNew position of 195K shares · Q3 2025. Average closing price $480.27 · Price range $433.66–$544.47195KsharespurchasedSold 42K shares (21.4%) · Q4 2025. Average closing price $532.54 · Price range $434.62–$579.8342KsharessoldSold 13K shares (8.8%) · Q1 2026. Average closing price $506.18 · Price range $451.76–$597.9813Ksharessold← Earlier —1 purchase
Average closing price · filing quarter
$506.18
Price range · filing quarter
$451.76 – $597.98
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −13K −$6.8M −8.8% 139K May 14, 2026
Q4 2025 Reduced −42K −$22M −21.4% 153K Feb 12, 2026
Q3 2025 New +195K +$93M – 195K Nov 13, 2025
Q1 2025 Added +107K +$59M +1,401.0% 115K May 14, 2025
Q4 2024 Reduced −85K −$44M −91.7% 8K Feb 13, 2025
Q3 2024 New +92K +$43M – 92K Nov 13, 2024
Q4 2023 Reduced −95K −$28M −40.5% 139K Feb 13, 2024
Q3 2023 New +233K +$73M – 233K Nov 14, 2023
Q1 2023 New +412K +$102M – 412K May 12, 2023
Q3 2022 Added +31K +$6.7M +33.5% 125K Nov 14, 2022
Q2 2022 New +93K +$22M – 93K Aug 12, 2022
Q4 2021 Added +111K +$38M +107.7% 214K Feb 11, 2022
Q3 2021 Added +37K +$12M +55.8% 103K Nov 12, 2021
Q2 2021 Added +27K +$7.7M +70.8% 66K Aug 13, 2021
Q1 2021 First covered – – – 39K May 13, 2021
Data through Q1 2026 · filed May 14, 2026
15 grouped rows from 15 quarters

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Common questions

Does Jim Simons own ISRG?

Yes. As of Q1 2026, Jim Simons disclosed 139K shares of ISRG, worth $63M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jim Simons buy ISRG?

Jim Simons held ISRG since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jim Simons sell ISRG?

The quarter-by-quarter table above shows each sale and reduction Jim Simons disclosed in ISRG. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of ISRG does Jim Simons own?

Jim Simons disclosed 139K shares of ISRG as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jim Simons pay for ISRG?

Jim Simons's estimated average buy price for ISRG is $480.27, from quarter-average prices weighted by the shares added each quarter. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.