Inspire Medical Systems, Inc.
INSP- Exchange
- NYSE
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001609550
In the last 90 days, Inspire Medical Systems, Inc. insiders filed 0 open-market purchases and 1 sale; 275 institutions reported holding it in 13F filings for Q2 2026, worth $1.65B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Inspire Medical Systems, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 343
- +24 vs. Q3 2025
- Shares held
- 33.9M
- +2.96M (+9.6%) vs. Q3 2025
- Total value
- $3.12B
- +$828.8M (+36.1%) vs. Q3 2025
- New holders
- 93
- 114 more added
- Sold out
- 69
- 114 more reduced
6 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting INSP on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 275 | $1.65B |
| Q1 2026 | 301 | $1.80B |
| Q4 2025 | 343 | $3.12B |
| Q3 2025 | 325 | $2.31B |
| Q2 2025 | 356 | $4.39B |
| Q1 2025 | 363 | $5.46B |
| Q4 2024 | 357 | $6.20B |
| Q3 2024 | 347 | $7.03B |
| Q2 2024 | 325 | $4.23B |
| Q1 2024 | 327 | $6.83B |
| Q4 2023 | 343 | $6.31B |
| Q3 2023 | 365 | $5.65B |
| Q2 2023 | 407 | $9.11B |
| Q1 2023 | 374 | $6.68B |
| Q4 2022 | 340 | $7.11B |
| Q3 2022 | 301 | $5.01B |
| Q2 2022 | 287 | $5.01B |
| Q1 2022 | 299 | $6.92B |
| Q4 2021 | 289 | $5.95B |
| Q3 2021 | 254 | $5.91B |
| Q2 2021 | 248 | $4.83B |
| Q1 2021 | 251 | $5.21B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Inspire Medical Systems, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,550,848 | $327.5M | 0.01% | +3,653+0.1% | Added |
| Vanguard Group Inc | 2,953,170 | $272.4M | 0.00% | −46,917−1.6% | Reduced |
| Wellington Management Group LLP | 2,211,091 | $203.9M | 0.04% | +2,211,091 | New |
| Deerfield Management Company, L.P. (Series C) | 1,505,872 | $138.9M | 1.78% | +458,178+43.7% | Added |
| Morgan Stanley | 1,259,762 | $116.2M | 0.01% | +809,121+179.5% | Added |
| D. E. Shaw & Co., Inc. | 1,212,162 | $111.8M | 0.08% | +853,305+237.8% | Added |
| William Blair Investment Management, LLC | 1,161,285 | $107.1M | 0.30% | −136,288−10.5% | Reduced |
| State Street Corp | 918,504 | $84.7M | 0.00% | −60,805−6.2% | Reduced |
| Artisan Partners Limited Partnership | 785,742 | $72.5M | 0.11% | +259,500+49.3% | Added |
| Fuller & Thaler Asset Management, Inc. | 668,099 | $61.6M | 0.21% | +668,099 | New |
| Janus Henderson Group PLC | 562,331 | $51.9M | 0.02% | −104,747−15.7% | Reduced |
| Braidwell LP | 540,890 | $49.9M | 1.60% | −342,857−38.8% | Reduced |
| Marshall Wace, LLP | 531,079 | $49.0M | 0.05% | +396,810+295.5% | Added |
| Deutsche Bank AG | 516,816 | $47.7M | 0.02% | +509,628+7,090.0% | Added |
| Citadel Advisors LLC | 511,318 | $47.2M | 0.03% | −1,237,091−70.8% | Reduced |
| Geode Capital Management, LLC | 491,750 | $45.4M | 0.00% | −13,237−2.6% | Reduced |
| UBS Asset Management Americas Inc | 463,316 | $42.7M | 0.01% | −370,283−44.4% | Reduced |
| Standard Life Aberdeen plc | 460,901 | $42.5M | 0.07% | +64,561+16.3% | Added |
| BNP Paribas Arbitrage, SA | 454,810 | $41.9M | 0.03% | −67,370−12.9% | Reduced |
| Eventide Asset Management, LLC | 440,205 | $40.6M | 0.63% | +183,547+71.5% | Added |
| UBS Group AG | 411,329 | $37.9M | 0.01% | −56,407−12.1% | Reduced |
| Renaissance Technologies LLC | 410,768 | $37.9M | 0.06% | +255,768+165.0% | Added |
| Amundi | 364,622 | $33.6M | 0.01% | +109,498+42.9% | Added |
| Driehaus Capital Management LLC | 348,500 | $32.1M | 0.22% | +348,500 | New |
| Dimensional Fund Advisors LP | 341,397 | $31.5M | 0.01% | −2,321−0.7% | Reduced |
| Bamco Inc | 337,486 | $31.1M | 0.08% | +147,463+77.6% | Added |
| Price T Rowe Associates Inc | 308,171 | $28.4M | 0.00% | +283,243+1,136.2% | Added |
| Jefferies Financial Group Inc. | 307,588 | $28.4M | 0.23% | +307,588 | New |
| Soleus Capital Management, L.P. | 299,399 | $27.6M | 1.17% | −428,789−58.9% | Reduced |
| Goldman Sachs Group Inc | 284,885 | $26.3M | 0.00% | +21,661+8.2% | Added |
| Jane Street Group, LLC | 277,199 | $25.6M | 0.03% | +205,748+288.0% | Added |
| Jain Global LLC | 268,250 | $24.7M | 0.24% | +264,354+6,785.3% | Added |
| Assenagon Asset Management S.A. | 264,999 | $24.4M | 0.04% | +264,999 | New |
| Invesco Ltd. | 261,374 | $24.1M | 0.00% | +168,587+181.7% | Added |
| Franklin Resources Inc | 231,438 | $21.3M | 0.01% | −65,807−22.1% | Reduced |
| Bank of New York Mellon Corp | 215,780 | $19.9M | 0.00% | +48,904+29.3% | Added |
| Trexquant Investment LP | 213,249 | $19.7M | 0.18% | +213,249 | New |
| VGI Partners Ltd | 211,304 | $19.5M | 1.12% | +109,590+107.7% | Added |
| Bank of America Corp | 210,126 | $19.4M | 0.00% | −78,702−27.2% | Reduced |
| Champlain Investment Partners, LLC | 203,098 | $18.7M | 0.19% | −203,961−50.1% | Reduced |
| Millennium Management LLC | 202,140 | $18.6M | 0.01% | −154,668−43.3% | Reduced |
| Keybank National Association | 200,042 | $18.4M | 0.07% | +370.0% | Added |
| Northern Trust Corp | 197,456 | $18.2M | 0.00% | +7,692+4.1% | Added |
| Charles Schwab Investment Management Inc | 194,155 | $17.9M | 0.00% | +1,021+0.5% | Added |
| Voloridge Investment Management, LLC | 188,100 | $17.3M | 0.06% | +99,799+113.0% | Added |
| Balyasny Asset Management LLC | 187,226 | $17.3M | 0.03% | −427,133−69.5% | Reduced |
| Nuveen, LLC | 159,421 | $14.7M | 0.00% | +111,569+233.2% | Added |
| Frontier Capital Management Co LLC | 142,007 | $13.1M | 0.14% | −20,288−12.5% | Reduced |
| Ra Capital Management, L.P. | 141,964 | $13.1M | 0.13% | +27,063+23.6% | Added |
| FMR LLC | 137,306 | $12.7M | 0.00% | −612,006−81.7% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 136,420 | $12.6M | 0.03% | −2,897−2.1% | Reduced |
| Rock Springs Capital Management LP | 131,000 | $12.1M | 0.62% | +20,500+18.6% | Added |
| Norges Bank | 129,570 | $12.0M | 0.00% | +129,570 | New |
| Principal Financial Group Inc | 125,519 | $11.6M | 0.01% | −3,465−2.7% | Reduced |
| Capital Fund Management S.A. | 122,706 | $11.3M | 0.11% | +49,709+68.1% | Added |
| HRT Financial LP | 121,761 | $11.2M | 0.04% | +76,080+166.5% | Added |
| Brown Capital Management LLC | 119,935 | $11.1M | 0.91% | −158,105−56.9% | Reduced |
| Rheos Capital Works Inc. | 117,400 | $10.8M | 0.69% | +65,000+124.0% | Added |
| Wasatch Advisors Inc | 116,068 | $10.7M | 0.06% | −19,846−14.6% | Reduced |
| Tudor Investment Corp Et Al | 112,873 | $10.4M | 0.06% | +112,873 | New |
| Canada Pension Plan Investment Board | 105,500 | $9.73M | 0.01% | +65,900+166.4% | Added |
| Bellevue Group AG | 100,761 | $9.29M | 0.18% | +42,113+71.8% | Added |
| Riverbridge Partners LLC | 97,111 | $8.96M | 0.17% | −6,460−6.2% | Reduced |
| Public Sector Pension Investment Board | 91,472 | $8.44M | 0.03% | −13,512−12.9% | Reduced |
| Ameriprise Financial Inc | 91,277 | $8.42M | 0.00% | +2,206+2.5% | Added |
| ING Groep NV | 88,300 | $8.14M | 0.05% | +74,800+554.1% | Added |
| Barclays PLC | 85,655 | $7.90M | 0.00% | +77,005+890.2% | Added |
| Glenmede Trust Co NA | 81,986 | $7.56M | 0.04% | +81,986 | New |
| Walleye Capital LLC | 78,217 | $7.21M | 0.04% | −50,396−39.2% | Reduced |
| Arrowstreet Capital, Limited Partnership | 76,028 | $7.01M | 0.00% | +76,028 | New |
| Integral Health Asset Management, LLC | 75,000 | $6.92M | 0.35% | −45,000−37.5% | Reduced |
| Bridgewater Associates, LP | 71,727 | $6.62M | 0.02% | −17,225−19.4% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 70,635 | $6.51M | 0.15% | −28,414−28.7% | Reduced |
| Legal & General Group Plc | 69,756 | $6.43M | 0.00% | −14,524−17.2% | Reduced |
| New York State Common Retirement Fund | 68,774 | $6.34M | 0.01% | +18,527+36.9% | Added |
| Credit Agricole S A | 67,695 | $6.24M | 0.02% | −57,560−46.0% | Reduced |
| Rhumbline Advisers | 65,894 | $6.08M | 0.00% | −1,306−1.9% | Reduced |
| Voleon Capital Management LP | 63,627 | $5.87M | 0.13% | −14,891−19.0% | Reduced |
| Nomura Holdings Inc | 60,950 | $5.62M | 0.02% | +60,950 | New |
| Two Sigma Investments, LP | 59,515 | $5.49M | 0.01% | +22,363+60.2% | Added |
| Mairs & Power Inc | 57,616 | $5.31M | 0.05% | −7,830−12.0% | Reduced |
| Swiss National Bank | 55,500 | $5.12M | 0.00% | +1,100+2.0% | Added |
| Nomura Asset Management International Inc. | 52,246 | $4.82M | 0.01% | +52,246 | New |
| SEI Investments Co | 50,940 | $4.70M | 0.00% | +34,515+210.1% | Added |
| Gotham Asset Management, LLC | 48,547 | $4.48M | 0.02% | +19,457+66.9% | Added |
| Susquehanna International Group, LLP | 48,497 | $4.47M | 0.01% | −20,831−30.0% | Reduced |
| Algert Global LLC | 46,250 | $4.27M | 0.07% | +22,763+96.9% | Added |
| XTX Topco Ltd | 45,783 | $4.22M | 0.11% | +38,494+528.1% | Added |
| JPMorgan Chase & Co | 45,388 | $4.19M | 0.00% | −34,986−43.5% | Reduced |
| Lazard Asset Management LLC | 44,981 | $4.15M | 0.01% | −44,624−49.8% | Reduced |
| HSBC Holdings PLC | 43,328 | $4.00M | 0.00% | −210−0.5% | Reduced |
| Man Group plc | 41,425 | $3.82M | 0.01% | −42,420−50.6% | Reduced |
| Bank of Nova Scotia | 40,042 | $3.69M | 0.01% | +15,844+65.5% | Added |
| ExodusPoint Capital Management, LP | 38,896 | $3.59M | 0.04% | +6,075+18.5% | Added |
| SG Americas Securities, LLC | 38,449 | $3.55M | 0.00% | +30,695+395.9% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 38,404 | $3.54M | 0.01% | +34,881+990.1% | Added |
| Bullseye Asset Management LLC | 36,128 | $3.33M | 1.80% | 00.0% | Unchanged |
| Rhenman & Partners Asset Management AB | 35,800 | $3.30M | 0.31% | −25,200−41.3% | Reduced |
| Citigroup Inc | 34,672 | $3.20M | 0.00% | −7,656−18.1% | Reduced |
| EFG International AG | 33,813 | $3.11M | 0.06% | +33,813 | New |