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, Q1 2026
Institutional positions in Inspire Medical Systems, Inc. as of Mar 31, 2026. 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
- 301
- −34 vs. Q4 2025
- Shares held
- 34.9M
- +4.10M (+13.3%) vs. Q4 2025
- Total value
- $1.80B
- −$1.04B (−36.6%) vs. Q4 2025
- New holders
- 59
- 120 more added
- Sold out
- 93
- 99 more reduced
8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Inspire Medical Systems, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| State Board of Administration of Florida Retirement System | 27,519 | $1.42M | 0.00% | −2,471−8.2% | Reduced |
| Engineers Gate Manager LP | 29,567 | $1.53M | 0.02% | +10,363+54.0% | Added |
| Zacks Investment Management | 30,021 | $1.55M | 0.01% | +30,021 | New |
| Citigroup Inc | 31,606 | $1.63M | 0.00% | −3,066−8.8% | Reduced |
| XTX Topco Ltd | 32,483 | $1.68M | 0.03% | −13,300−29.1% | Reduced |
| Axq Capital, LP | 33,014 | $1.70M | 0.22% | +33,014 | New |
| Voleon Capital Management LP | 33,122 | $1.71M | 0.04% | −30,505−47.9% | Reduced |
| California State Teachers Retirement System | 34,473 | $1.78M | 0.00% | +8,287+31.6% | Added |
| Empowered Funds, LLC | 34,876 | $1.80M | 0.01% | +34,876 | New |
| FMR LLC | 37,984 | $1.96M | 0.00% | −99,322−72.3% | Reduced |
| Nordea Investment Management AB | 40,420 | $2.06M | 0.00% | +29,032+254.9% | Added |
| SEI Investments Co | 42,100 | $2.17M | 0.00% | −8,840−17.4% | Reduced |
| Franklin Resources Inc | 43,227 | $2.23M | 0.00% | −188,211−81.3% | Reduced |
| Bullseye Asset Management LLC | 51,128 | $2.64M | 1.53% | +15,000+41.5% | Added |
| JPMorgan Chase & Co | 53,615 | $2.70M | 0.00% | +8,227+18.1% | Added |
| Intech Investment Management LLC | 52,702 | $2.72M | 0.03% | +46,482+747.3% | Added |
| Algert Global LLC | 52,860 | $2.73M | 0.04% | +6,610+14.3% | Added |
| Man Group plc | 54,488 | $2.81M | 0.01% | +13,063+31.5% | Added |
| Swiss National Bank | 55,500 | $2.86M | 0.00% | 00.0% | Unchanged |
| Bank of Nova Scotia | 60,000 | $3.09M | 0.01% | +19,958+49.8% | Added |
| Legal & General Group Plc | 61,583 | $3.18M | 0.00% | −8,173−11.7% | Reduced |
| Victory Capital Management Inc | 64,260 | $3.31M | 0.00% | +52,938+467.6% | Added |
| Qube Research & Technologies Ltd | 66,184 | $3.41M | 0.00% | +66,184 | New |
| Squarepoint Ops LLC | 66,814 | $3.45M | 0.01% | +59,992+879.4% | Added |
| Nomura Asset Management International Inc. | 67,280 | $3.47M | 0.01% | +15,034+28.8% | Added |
| Barclays PLC | 67,641 | $3.49M | 0.00% | −18,014−21.0% | Reduced |
| Rhumbline Advisers | 67,907 | $3.50M | 0.00% | +2,013+3.1% | Added |
| New York State Common Retirement Fund | 70,885 | $3.66M | 0.01% | +2,111+3.1% | Added |
| First Trust Advisors LP | 71,661 | $3.70M | 0.00% | +68,589+2,232.7% | Added |
| Worldquant Millennium Advisors LLC | 75,239 | $3.88M | 0.01% | +68,035+944.4% | Added |
| Glenmede Trust Co NA | 81,495 | $4.20M | 0.02% | −491−0.6% | Reduced |
| Edgestream Partners, L.P. | 82,268 | $4.24M | 0.14% | +64,315+358.2% | Added |
| Brown Capital Management LLC | 84,368 | $4.35M | 0.62% | −35,567−29.7% | Reduced |
| Two Sigma Investments, LP | 85,096 | $4.39M | 0.00% | +25,581+43.0% | Added |
| Nuveen, LLC | 85,169 | $4.39M | 0.00% | −74,252−46.6% | Reduced |
| Gotham Asset Management, LLC | 87,733 | $4.53M | 0.01% | +39,186+80.7% | Added |
| Riverbridge Partners LLC | 92,494 | $4.77M | 0.12% | −4,617−4.8% | Reduced |
| Public Sector Pension Investment Board | 93,086 | $4.80M | 0.01% | +1,614+1.8% | Added |
| Bellevue Group AG | 99,735 | $5.14M | 0.12% | −1,026−1.0% | Reduced |
| Voloridge Investment Management, LLC | 100,207 | $5.17M | 0.02% | −87,893−46.7% | Reduced |
| Invesco Ltd. | 103,973 | $5.36M | 0.00% | −157,401−60.2% | Reduced |
| SG Americas Securities, LLC | 105,147 | $5.42M | 0.01% | +66,698+173.5% | Added |
| Susquehanna Portfolio Strategies, LLC | 106,157 | $5.48M | 0.08% | +103,657+4,146.3% | Added |
| Capital Fund Management S.A. | 109,015 | $5.62M | 0.05% | −13,691−11.2% | Reduced |
| Rheos Capital Works Inc. | 117,400 | $6.05M | 0.40% | 00.0% | Unchanged |
| Trexquant Investment LP | 121,490 | $6.27M | 0.05% | −91,759−43.0% | Reduced |
| Principal Financial Group Inc | 126,788 | $6.54M | 0.00% | +1,269+1.0% | Added |
| Rock Springs Capital Management LP | 131,800 | $6.80M | 0.40% | +800+0.6% | Added |
| Los Angeles Capital Management LLC | 132,954 | $6.86M | 0.03% | +132,813+94,193.6% | Added |
| VGI Partners Ltd | 135,767 | $7.00M | 0.38% | −75,537−35.7% | Reduced |
| Wasatch Advisors Inc | 138,603 | $7.15M | 0.05% | +22,535+19.4% | Added |
| Longaeva Partners L.P. | 138,761 | $7.16M | 0.34% | +138,761 | New |
| Ameriprise Financial Inc | 143,451 | $7.40M | 0.00% | +52,174+57.2% | Added |
| Bank of New York Mellon Corp | 148,764 | $7.67M | 0.00% | −67,016−31.1% | Reduced |
| Balyasny Asset Management LLC | 151,856 | $7.83M | 0.02% | −35,370−18.9% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 158,274 | $8.16M | 0.15% | +87,639+124.1% | Added |
| Champlain Investment Partners, LLC | 158,989 | $8.20M | 0.10% | −44,109−21.7% | Reduced |
| Canada Pension Plan Investment Board | 164,100 | $8.46M | 0.01% | +58,600+55.5% | Added |
| Tudor Investment Corp Et Al | 167,218 | $8.63M | 0.05% | +54,345+48.1% | Added |
| Vanguard Fiduciary Trust Co | 167,700 | $8.65M | 0.00% | +167,700 | New |
| Bridgewater Associates, LP | 173,533 | $8.95M | 0.04% | +101,806+141.9% | Added |
| Price T Rowe Associates Inc | 181,313 | $9.35M | 0.00% | −126,858−41.2% | Reduced |
| Cerity Partners LLC | 181,426 | $9.36M | 0.01% | +181,426 | New |
| Charles Schwab Investment Management Inc | 183,351 | $9.46M | 0.00% | −10,804−5.6% | Reduced |
| Bank of America Corp | 186,069 | $9.60M | 0.00% | −24,057−11.4% | Reduced |
| Northern Trust Corp | 197,033 | $10.2M | 0.00% | −423−0.2% | Reduced |
| Acadian Asset Management LLC | 209,486 | $10.8M | 0.02% | +186,071+794.7% | Added |
| Susquehanna International Group, LLP | 210,573 | $10.9M | 0.01% | +162,076+334.2% | Added |
| Dimensional Fund Advisors LP | 234,670 | $12.1M | 0.00% | −106,727−31.3% | Reduced |
| Royal Bank of Canada | 252,971 | $13.0M | 0.00% | +241,987+2,203.1% | Added |
| Amundi | 256,830 | $13.2M | 0.00% | −107,792−29.6% | Reduced |
| Bamco Inc | 298,470 | $15.4M | 0.05% | −39,016−11.6% | Reduced |
| Jefferies Financial Group Inc. | 306,423 | $15.8M | 0.19% | −1,165−0.4% | Reduced |
| AQR Capital Management LLC | 308,662 | $15.9M | 0.01% | +281,622+1,041.5% | Added |
| BNP Paribas Arbitrage, SA | 319,758 | $16.5M | 0.01% | −135,052−29.7% | Reduced |
| Ra Capital Management, L.P. | 325,663 | $16.8M | 0.18% | +183,699+129.4% | Added |
| Walleye Capital LLC | 358,489 | $18.5M | 0.11% | +280,272+358.3% | Added |
| Millennium Management LLC | 386,146 | $19.9M | 0.01% | +184,006+91.0% | Added |
| Citadel Advisors LLC | 394,076 | $20.3M | 0.01% | −117,242−22.9% | Reduced |
| ADAR1 Capital Management, LLC | 405,197 | $20.9M | 1.26% | +390,197+2,601.3% | Added |
| UBS Asset Management Americas Inc | 448,787 | $23.1M | 0.00% | −14,529−3.1% | Reduced |
| Renaissance Technologies LLC | 469,968 | $24.2M | 0.04% | +59,200+14.4% | Added |
| Standard Life Aberdeen plc | 477,476 | $24.6M | 0.04% | +16,575+3.6% | Added |
| Geode Capital Management, LLC | 510,234 | $26.3M | 0.00% | +18,484+3.8% | Added |
| Deutsche Bank AG | 513,175 | $26.5M | 0.01% | −3,641−0.7% | Reduced |
| Assenagon Asset Management S.A. | 520,174 | $26.8M | 0.04% | +255,175+96.3% | Added |
| Vestal Point Capital, LP | 539,269 | $27.8M | 0.78% | +539,269 | New |
| Soleus Capital Management, L.P. | 576,299 | $29.7M | 1.20% | +276,900+92.5% | Added |
| UBS Group AG | 638,928 | $33.0M | 0.01% | +227,599+55.3% | Added |
| Goldman Sachs Group Inc | 664,003 | $34.2M | 0.00% | +379,118+133.1% | Added |
| Braidwell LP | 677,570 | $34.9M | 1.17% | +136,680+25.3% | Added |
| Artisan Partners Limited Partnership | 780,575 | $40.3M | 0.07% | −5,167−0.7% | Reduced |
| State Street Corp | 956,011 | $49.3M | 0.00% | +37,507+4.1% | Added |
| William Blair Investment Management, LLC | 1,137,384 | $58.7M | 0.19% | −23,901−2.1% | Reduced |
| D. E. Shaw & Co., Inc. | 1,188,537 | $61.3M | 0.05% | −23,625−1.9% | Reduced |
| Vanguard Capital Management LLC | 1,266,738 | $65.3M | 0.00% | +1,266,738 | New |
| Morgan Stanley | 1,450,634 | $74.8M | 0.00% | +190,872+15.2% | Added |
| Vanguard Portfolio Management LLC | 1,637,173 | $84.4M | 0.00% | +1,637,173 | New |
| Wellington Management Group LLP | 2,535,954 | $130.8M | 0.02% | +324,863+14.7% | Added |
| Deerfield Management Company, L.P. (Series C) | 2,703,238 | $139.4M | 1.64% | +1,197,366+79.5% | Added |