INSP in the 13F filings
Inspire Med Sys Inc · CUSIP 457730109
- Quarter end
- 31 Dec 2023
- the date the book describes
- Filed
- 5 Nov 2026
- latest of these filings; the earliest 26 Jan 2024
- Managers listing it
- 10
- at least, of 95 tracked, among listed positions
- Comparable managers
- 93
- filed both Q3 2023 and Q4 2023; 7 listed it in both
- Shares listed
- 7,766,931
- combined, among listed positions
- Reported value
- $1.6bn
- combined, at the quarter end
Among the 93 comparable managers: 9 buyers (opened or added shares) and 2 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.
Managers listing INSP in Q4 2023
10 of 10 holders
| Action | Filing | |||||
|---|---|---|---|---|---|---|
| Fidelity (FMR LLC) | 3,257,544 | $663m | 0.05% | Added | +786,080 | 5 Nov 2026 (the filing on sec.gov) |
| Wellington Management Group LLP | 1,430,266 | $291m | 0.05% | Added | +453,294 | 12 Feb 2024 (the filing on sec.gov) |
| Baillie Gifford & Co | 1,229,879 | $250m | 0.20% | Added | +1,212,175 | 26 Jan 2024 (the filing on sec.gov) |
| Farallon Capital Management LLC | 855,096 | $174m | 0.80% | Added | +429,000 | 14 Feb 2024 (the filing on sec.gov) |
| Point72 Asset Management LP | 473,195 | $96m | 0.23% | Trimmed | -410,167 | 14 Feb 2024 (the filing on sec.gov) |
| Marshall Wace LLP | 247,641 | $50m | 0.09% | Added | n.a. | 14 Feb 2024 (the filing on sec.gov) |
| Schonfeld Strategic Advisors LLC | 107,342 | $22m | 0.14% | Added | +62,142 | 14 Feb 2024 (the filing on sec.gov) |
| ExodusPoint Capital Management LP | 88,764 | $18m | 0.12% | Added | +62,975 | 14 Feb 2024 (the filing on sec.gov) |
| Tudor Investment Corp | 71,600 | $15m | 0.12% | Added | n.a. | 14 Feb 2024 (the filing on sec.gov) |
| Eisler Capital Management Ltd | 5,604 | $1.1m | under 0.1% | New | new | 13 Feb 2024 (the filing on sec.gov) |
Largest increases and reductions, by shares
Increases
- Baillie Gifford & Coexisting position · 1,229,879 shares now+1,212,175
- Fidelity (FMR LLC)existing position · 3,257,544 shares now+786,080
- Wellington Management Group LLPexisting position · 1,430,266 shares now+453,294
- Farallon Capital Management LLCexisting position · 855,096 shares now+429,000
- ExodusPoint Capital Management LPexisting position · 88,764 shares now+62,975
Reductions
- Point72 Asset Management LPexisting position · 473,195 shares now-410,167
New positions and exits
New (1)
Exited (1)
- Quantbot Technologies LPwas $7.1m
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2018 | 1 | $1.2m | n.a. | n.a. |
| Q4 2018 | 1 | $7.0m | n.a. | n.a. |
| Q1 2019 | 2 | $6.5m | n.a. | n.a. |
| Q2 2019 | 2 | $2.2m | n.a. | n.a. |
| Q4 2019 | 1 | $385k | n.a. | n.a. |
| Q1 2020 | 4 | $7.0m | n.a. | n.a. |
| Q2 2020 | 5 | $422m | n.a. | n.a. |
| Q3 2020 | 8 | $638m | n.a. | n.a. |
| Q4 2020 | 10 | $936m | n.a. | n.a. |
| Q1 2021 | 10 | $790m | n.a. | n.a. |
| Q2 2021 | 11 | $277m | n.a. | n.a. |
| Q3 2021 | 11 | $486m | n.a. | n.a. |
| Q4 2021 | 10 | $282m | n.a. | n.a. |
| Q1 2022 | 14 | $1.3bn | n.a. | n.a. |
| Q2 2022 | 13 | $790m | n.a. | n.a. |
| Q3 2022 | 14 | $436m | n.a. | n.a. |
| Q4 2022 | 15 | $740m | n.a. | n.a. |
| Q1 2023 | 15 | $738m | n.a. | n.a. |
| Q2 2023 | 18 | $1.2bn | n.a. | n.a. |
| Q3 2023 | 13 | $1.1bn | n.a. | n.a. |
| Q4 2023 | 10 | $1.6bn | 9 | 2 |
| Q1 2024 | 8 | $2.0bn | 4 | 6 |
| Q2 2024 | 7 | $666m | 6 | 4 |
| Q3 2024 | 11 | $1.6bn | 7 | 4 |
| Q4 2024 | 11 | $1.2bn | 6 | 6 |
| Q1 2025 | 10 | $627m | 6 | 4 |
| Q2 2025 | 7 | $649m | 4 | 4 |
| Q3 2025 | 8 | $232m | 6 | 3 |
| Q4 2025 | 10 | $554m | 18 | 20 |
| Q1 2026 | 4 | $199m | 14 | 19 |
| Q2 2026 | 3 | $45m | 13 | 15 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
INSP and LLY →INSP and JNJ →INSP and VRTX →Choose a stock to compare with INSP →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own INSP, latest filings →Back to the 13F Explorer →