Save your place

Sign in to WhoBought

Please try again later.

Jim Simons's Inspire Medical Systems, Inc. (INSP) position

Yes: as of Q1 2026, Jim Simons holds 470K shares of INSP worth $24M (0.0% of the disclosed portfolio). Last quarter the position was increased by 14.4%. First disclosed Q2 2021.
View full portfolio →
Current value
$24M
Shares held
470K
% of portfolio
0.0%
Est. average buy price (i)
$94.28
est. since Q3 2025
Quarter-end price
$51.58

Estimated trade prices

Average price in quarters with purchases
$177.64
Average prices in quarters with sales
  • Q2 2025: $145.01 (64K shares sold)
  • Q1 2024: $196.02 (4K shares sold)
  • Q4 2023: $162.01 (202K shares sold)

INSP price vs Simons's position

1Y 3Y 5Y MAX
Dates
$40$200$40020222023202420252026New position of 31K shares · Q4 2021. Average closing price $244.16 · Price range $207.57–$280.1731KsharespurchasedAdded 7K shares (21.2%) · Q1 2022. Average closing price $228.53 · Price range $193.94–$261.917KsharespurchasedNew position of 16K shares · Q3 2022. Average closing price $200.95 · Price range $170.68–$226.4616KsharespurchasedAdded 24K shares (147.3%) · Q4 2022. Average closing price $213.22 · Price range $164.02–$259.7524KsharespurchasedAdded 170K shares (417.2%) · Q1 2023. Average closing price $252.78 · Price range $229.06–$278.01170KsharespurchasedAdded 46K shares (21.8%) · Q2 2023. Average closing price $285.71 · Price range $226.52–$324.6446KsharespurchasedAdded 58K shares (22.7%) · Q3 2023. Average closing price $252.20 · Price range $185.00–$326.0858KsharespurchasedSold 202K shares (64.0%) · Q4 2023. Average closing price $162.01 · Price range $125.26–$203.83202KsharessoldSold 4K shares (3.5%) · Q1 2024. Average closing price $196.02 · Price range $165.30–$226.004KsharessoldAdded 27K shares (36.5%) · Q3 2024. Average closing price $173.72 · Price range $125.79–$216.7127KsharespurchasedAdded 36K shares (36.0%) · Q4 2024. Average closing price $194.11 · Price range $172.70–$214.9336KsharespurchasedAdded 54K shares (39.5%) · Q1 2025. Average closing price $180.91 · Price range $157.24–$215.4254KsharespurchasedSold 64K shares (33.5%) · Q2 2025. Average closing price $145.01 · Price range $127.18–$161.8864KsharessoldAdded 256K shares (165.0%) · Q4 2025. Average closing price $95.67 · Price range $72.08–$143.99256KsharespurchasedAdded 59K shares (14.4%) · Q1 2026. Average closing price $70.00 · Price range $50.13–$99.0359Ksharespurchased← Earlier —1 purchase
Average closing price · filing quarter
$70.00
Price range · filing quarter
$50.13 – $99.03
Sign in to see who bought

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +59K +$4.1M +14.4% 470K May 14, 2026
Q4 2025 Added +256K +$24M +165.0% 411K Feb 12, 2026
Q3 2025 First covered – – – 155K Nov 13, 2025
Q2 2025 Reduced −64K −$9.3M −33.5% 127K Aug 13, 2025
Q1 2025 Added +54K +$9.8M +39.5% 191K May 14, 2025
Q4 2024 Added +36K +$7.0M +36.0% 137K Feb 13, 2025
Q3 2024 Added +27K +$4.7M +36.5% 100K Nov 13, 2024
Q2 2024 First covered – – – 74K Aug 9, 2024
Q1 2024 Reduced −4K −$784K −3.5% 110K May 13, 2024
Q4 2023 Reduced −202K −$33M −64.0% 114K Feb 13, 2024
Q3 2023 Added +58K +$15M +22.7% 315K Nov 14, 2023
Q2 2023 Added +46K +$13M +21.8% 257K Aug 11, 2023
Q1 2023 Added +170K +$43M +417.2% 211K May 12, 2023
Q4 2022 Added +24K +$5.2M +147.3% 41K Feb 13, 2023
Q3 2022 New +16K +$3.3M – 16K Nov 14, 2022
Q1 2022 Added +7K +$1.5M +21.2% 38K May 13, 2022
Q4 2021 New +31K +$7.6M – 31K Feb 11, 2022
Q2 2021 New +43K +$8.6M – 43K Aug 13, 2021
Data through Q1 2026 · filed May 14, 2026
18 grouped rows from 18 quarters

More Simons positions

United Therapeutics Corporation(UTHR)
$1.1B
1.7% of portfolio

Palantir Technologies Inc.(PLTR)
$997M
1.6% of portfolio

Apple Inc.(AAPL)
$778M
1.2% of portfolio

Kinross Gold Corporation(KGC)
$780M
1.2% of portfolio

Micron Technology, Inc.(MU)
$731M
1.1% of portfolio

VeriSign, Inc.(VRSN)
$700M
1.1% of portfolio

Common questions

Does Jim Simons own INSP?

Yes. As of Q1 2026, Jim Simons disclosed 470K shares of INSP, worth $24M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jim Simons buy INSP?

Jim Simons first disclosed a INSP position in Q2 2021; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jim Simons sell INSP?

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

How many shares of INSP does Jim Simons own?

Jim Simons disclosed 470K shares of INSP 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 INSP?

Jim Simons began building the INSP position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. 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.