Inspire Medical SystemsINSP
13F holders, Q1 2025 (March 31)363holders +6
55new positions
49sold out
7famous investors
$159.14avg. 13F price*
At the end of Q1 2025, 363 institutions reported holding Inspire Medical Systems Inc. (INSP) in their 13F filings, up 6 from Q4 2024. 55 opened new positions and 49 sold out. The largest holders were BlackRock, Inc. ($641.8M), Vanguard Group Inc. ($513.8M) and FMR LLC ($404.8M). 7 famous investors held it, including Ron Baron (0.2% of Baron Capital (BAMCO)'s portfolio), Ray Dalio (0.1% of Bridgewater Associates's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Inspire Medical Systems Inc.
- CUSIP
- 457730109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 55 | $73.5M |
| Exits | 49 | $70.9M |
All 13F filers, Q4 2024 → Q1 2025: 3,924,477 shares bought and 3,047,151 shares sold, net +877,326 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 363 holders
| BlackRock, Inc. | 0.01% | Reduce -4.1% | 4,029,559 | $641.8M |
| Vanguard Group Inc. | 0.01% | Reduce -1.4% | 3,225,645 | $513.8M |
| FMR LLC | 0.03% | Add +0.9% | 2,541,360 | $404.8M |
| Wasatch Advisors LP | 1.35% | Add +15.3% | 1,524,107 | $242.8M |
| Dragoneer Investment Group, LLC | 4.35% | Add +49.0% | 1,297,603 | $206.7M |
| Baillie Gifford & Co. | 0.16% | Reduce -7.7% | 1,159,754 | $184.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.05% | Add +214.5% | 1,112,925 | $177.3M |
| State Street Corp. | 0.01% | Reduce -5.1% | 1,008,059 | $160.6M |
| Invesco Ltd. | 0.03% | Add +8.3% | 858,572 | $136.8M |
| William Blair Investment Management, LLC | 0.31% | Reduce -23.2% | 692,918 | $110.4M |
| Janus Henderson Group PLC | 0.06% | Add +13.3% | 642,760 | $101.1M |
| Macquarie Group Ltd. | 0.11% | Add +3.8% | 558,227 | $88.9M |
| Geode Capital Management, LLC | 0.01% | Add +5.1% | 511,209 | $81.5M |
| UBS Group AG | 0.02% | Add +33.5% | 485,179 | $77.3M |
| TimesSquare Capital Management, LLC | 1.22% | Add +9.8% | 476,217 | $75.9M |
| Morgan Stanley | 0.01% | Reduce -24.9% | 439,118 | $69.9M |
| Champlain Investment Partners, LLC | 0.50% | Reduce -1.9% | 435,762 | $69.4M |
| Frontier Capital Management Co. LLC | 0.76% | Add +3.5% | 433,487 | $69.0M |
| Baron Capital (BAMCO) | 0.20% | Add +21.5% | 422,693 | $67.3M |
| JPMorgan Chase & Co. | 0.00% | Reduce -23.1% | 399,713 | $63.7M |
| Bank of New York Mellon Corp | 0.01% | Reduce -34.5% | 380,260 | $60.6M |
| Artisan Partners Limited Partnership | 0.10% | Reduce -17.1% | 373,394 | $59.5M |
| Brown Capital Management LLC | 1.69% | Add +15.6% | 352,340 | $56.1M |
| Congress Asset Management Co. | 0.37% | Add +3943.6% | 307,555 | $49.0M |
| Eventide Asset Management, LLC | 0.97% | Add +144.9% | 306,301 | $48.8M |
| Allspring Global Investments Holdings, LLC | 0.08% | Reduce -6.0% | 306,740 | $48.5M |
| Braidwell LP | 2.51% | Add +3.1% | 302,410 | $48.2M |
| Charles Schwab Investment Management Inc. | 0.01% | Reduce -2.8% | 287,892 | $45.9M |
| Dimensional Fund Advisors LP | 0.01% | Add +19.5% | 277,681 | $44.2M |
| Northern Trust Corp. | 0.01% | Add +6.6% | 260,407 | $41.5M |
| Raymond James Financial Inc. | 0.01% | Reduce -7.9% | 236,496 | $37.7M |
| AQR Capital Management | 0.04% | Reduce -44.8% | 242,203 | $37.1M |
| Federated Hermes, Inc. | 0.08% | No change | 228,330 | $36.4M |
| Franklin Resources Inc. | 0.01% | Reduce -1.8% | 217,674 | $34.7M |
| Wellington Management Group LLP | 0.01% | Reduce -15.1% | 207,535 | $33.1M |
| Keybank National Association | 0.13% | Add +0.1% | 201,070 | $32.0M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.14% | Add +10.5% | 196,184 | $31.2M |
| Renaissance Technologies | 0.05% | Add +39.5% | 190,700 | $30.4M |
| Eversept Partners, LP | 3.36% | Reduce -36.7% | 186,425 | $29.7M |
| Gilder Gagnon Howe & Co. LLC | 0.38% | Reduce -2.1% | 183,653 | $29.3M |
| New York State Common Retirement Fund | 0.04% | Add +23.8% | 182,750 | $29.1M |
| Sei Investments Co. | 0.04% | Add +5.1% | 171,751 | $27.4M |
| Amundi | 0.01% | Reduce -10.4% | 182,253 | $27.2M |
| Voya Investment Management LLC | 0.03% | Add +5.3% | 164,936 | $26.3M |
| Norges Bank | 0.00% | Add +181.1% | 161,961 | $25.8M |
| Atika Capital Management LLC | 3.93% | Add +1.9% | 160,600 | $25.6M |
| Principal Financial Group Inc. | 0.01% | Add +1.0% | 147,768 | $23.5M |
| Thrivent Financial for Lutherans | 0.05% | Add +9.2% | 140,932 | $22.4M |
| Nuveen, LLC | 0.01% | — | 136,622 | $21.8M |
| Los Angeles Capital Management LLC | 0.10% | Add +50.4% | 136,174 | $21.7M |
| Riverbridge Partners LLC | 0.34% | Reduce -6.8% | 132,391 | $21.1M |
| Man Group plc | 0.06% | Reduce -26.2% | 129,842 | $20.7M |
| Ameriprise Financial Inc. | 0.01% | Add +16.5% | 122,060 | $19.4M |
| Aberdeen Group plc | 0.04% | No change | 121,361 | $19.3M |
| Jacobs Levy Equity Management, Inc. | 0.07% | Reduce -47.4% | 110,594 | $17.6M |
| Bank of America Corp. | 0.00% | Add +129.4% | 106,414 | $16.9M |
| Granite Investment Partners, LLC | 0.84% | Add +672.8% | 104,116 | $16.6M |
| Neuberger Berman Group LLC | 0.01% | Add +18.9% | 100,154 | $16.0M |
| Rock Springs Capital Management LP | 0.91% | Reduce -23.6% | 99,250 | $15.8M |
| Bellevue Group AG | 0.35% | Reduce -33.3% | 99,027 | $15.8M |
| Public Sector Pension Investment Board | 0.06% | Add +26.0% | 94,060 | $15.0M |
| Legal & General Group Plc | 0.00% | Reduce -1.6% | 93,979 | $15.0M |
| Catalio Capital Management, LP | 3.39% | New | 85,877 | $13.7M |
| Caisse de depot et placement du Quebec | 0.03% | Add +2038.3% | 85,167 | $13.6M |
| Eagle Health Investments LP | 3.36% | Reduce -40.6% | 81,121 | $12.9M |
| Victory Capital Management Inc. | 0.01% | Add +1.9% | 78,937 | $12.6M |
| Tri Locum Partners LP | 6.44% | Reduce -47.7% | 78,812 | $12.6M |
| Bridgewater Associates | 0.05% | Add +2203.9% | 72,851 | $11.6M |
| WCM Investment Management, LLC | 0.03% | Add +30.7% | 72,860 | $11.5M |
| Driehaus Capital Management LLC | 0.11% | New | 71,745 | $11.4M |
| Rhumbline Advisers | 0.01% | Reduce -2.9% | 71,535 | $11.4M |
| Mairs & Power Inc. | 0.12% | Add +9.4% | 70,776 | $11.3M |
| State of Wisconsin Investment Board | 0.03% | Add +3.2% | 67,811 | $10.8M |
| Mitsubishi UFJ Trust & Banking Corp | 0.03% | Reduce -8.0% | 67,478 | $10.7M |
| Credit Agricole S A | 0.04% | Reduce -43.1% | 67,177 | $10.7M |
| Jennison Associates LLC | 0.01% | Add +40.0% | 66,602 | $10.6M |
| First Trust Advisors LP | 0.01% | Reduce -35.6% | 65,385 | $10.4M |
| Integral Health Asset Management, LLC | 1.15% | Reduce -35.0% | 65,000 | $10.4M |
| Citadel Advisors | 0.01% | Add +15.0% | 60,286 | $9.6M |
| Algert Global LLC | 0.24% | Add +39.1% | 59,820 | $9.5M |
| BNP Paribas Financial Markets | 0.01% | Add +646.5% | 59,650 | $9.5M |
| Swiss National Bank | 0.01% | Reduce -0.8% | 58,100 | $9.3M |
| Fred Alger Management, LLC | 0.05% | Reduce -9.0% | 57,419 | $9.1M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -2.6% | 56,414 | $9.0M |
| Lazard Asset Management LLC | 0.01% | Reduce -13.6% | 55,569 | $8.9M |
| ExodusPoint Capital Management, LP | 0.12% | Reduce -64.0% | 54,877 | $8.7M |
| M&G PLC | 0.06% | Add +6.5% | 52,909 | $8.4M |
| Rheos Capital Works Inc. | 0.68% | No change | 52,400 | $8.3M |
| Goldman Sachs Group Inc. | 0.00% | Add +57.9% | 51,422 | $8.2M |
| Kornitzer Capital Management Inc. | 0.17% | No change | 50,240 | $8.0M |
| Impax Asset Management Group plc | 0.05% | No change | 50,000 | $8.0M |
| Capital Fund Management S.A. | 0.10% | Reduce -41.2% | 47,642 | $7.6M |
| Public Employees Retirement System of Ohio | 0.03% | Add +34.5% | 47,300 | $7.5M |
| Two Sigma Investments, LP | 0.02% | Add +181.8% | 46,169 | $7.4M |
| Teachers Retirement System of the State of Kentucky | 0.06% | Reduce -6.0% | 44,995 | $7.2M |
| Trexquant Investment LP | 0.08% | Add +22.8% | 41,576 | $6.6M |
| Kopp Family Office, LLC | 4.52% | No change | 41,041 | $6.5M |
| Soleus Capital Management, L.P. | 0.49% | New | 39,000 | $6.2M |
| California Public Employees Retirement System | 0.00% | Reduce -0.1% | 38,532 | $6.1M |
| Beck Bode, LLC | 1.08% | Add +5.2% | 36,520 | $5.8M |
"% of holder's portfolio" is INSP's weight in each manager's 13F, not the share of Inspire Medical Systems Inc. the manager owns.