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 |
|---|---|---|---|---|---|
| Northern Trust Corp | 197,456 | $18.2M | 0.00% | +7,692+4.1% | Added |
| Keybank National Association | 200,042 | $18.4M | 0.07% | +370.0% | Added |
| Millennium Management LLC | 202,140 | $18.6M | 0.01% | −154,668−43.3% | Reduced |
| Champlain Investment Partners, LLC | 203,098 | $18.7M | 0.19% | −203,961−50.1% | Reduced |
| Bank of America Corp | 210,126 | $19.4M | 0.00% | −78,702−27.2% | Reduced |
| VGI Partners Ltd | 211,304 | $19.5M | 1.12% | +109,590+107.7% | Added |
| Trexquant Investment LP | 213,249 | $19.7M | 0.18% | +213,249 | New |
| Bank of New York Mellon Corp | 215,780 | $19.9M | 0.00% | +48,904+29.3% | Added |
| Franklin Resources Inc | 231,438 | $21.3M | 0.01% | −65,807−22.1% | Reduced |
| Invesco Ltd. | 261,374 | $24.1M | 0.00% | +168,587+181.7% | Added |
| Assenagon Asset Management S.A. | 264,999 | $24.4M | 0.04% | +264,999 | New |
| Jain Global LLC | 268,250 | $24.7M | 0.24% | +264,354+6,785.3% | Added |
| Jane Street Group, LLC | 277,199 | $25.6M | 0.03% | +205,748+288.0% | Added |
| Goldman Sachs Group Inc | 284,885 | $26.3M | 0.00% | +21,661+8.2% | Added |
| Soleus Capital Management, L.P. | 299,399 | $27.6M | 1.17% | −428,789−58.9% | Reduced |
| Jefferies Financial Group Inc. | 307,588 | $28.4M | 0.23% | +307,588 | New |
| Price T Rowe Associates Inc | 308,171 | $28.4M | 0.00% | +283,243+1,136.2% | Added |
| Bamco Inc | 337,486 | $31.1M | 0.08% | +147,463+77.6% | Added |
| Dimensional Fund Advisors LP | 341,397 | $31.5M | 0.01% | −2,321−0.7% | Reduced |
| Driehaus Capital Management LLC | 348,500 | $32.1M | 0.22% | +348,500 | New |
| Amundi | 364,622 | $33.6M | 0.01% | +109,498+42.9% | Added |
| Renaissance Technologies LLC | 410,768 | $37.9M | 0.06% | +255,768+165.0% | Added |
| UBS Group AG | 411,329 | $37.9M | 0.01% | −56,407−12.1% | Reduced |
| Eventide Asset Management, LLC | 440,205 | $40.6M | 0.63% | +183,547+71.5% | Added |
| BNP Paribas Arbitrage, SA | 454,810 | $41.9M | 0.03% | −67,370−12.9% | Reduced |
| Standard Life Aberdeen plc | 460,901 | $42.5M | 0.07% | +64,561+16.3% | Added |
| UBS Asset Management Americas Inc | 463,316 | $42.7M | 0.01% | −370,283−44.4% | Reduced |
| Geode Capital Management, LLC | 491,750 | $45.4M | 0.00% | −13,237−2.6% | Reduced |
| Citadel Advisors LLC | 511,318 | $47.2M | 0.03% | −1,237,091−70.8% | Reduced |
| Deutsche Bank AG | 516,816 | $47.7M | 0.02% | +509,628+7,090.0% | Added |
| Marshall Wace, LLP | 531,079 | $49.0M | 0.05% | +396,810+295.5% | Added |
| Braidwell LP | 540,890 | $49.9M | 1.60% | −342,857−38.8% | Reduced |
| Janus Henderson Group PLC | 562,331 | $51.9M | 0.02% | −104,747−15.7% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 668,099 | $61.6M | 0.21% | +668,099 | New |
| Artisan Partners Limited Partnership | 785,742 | $72.5M | 0.11% | +259,500+49.3% | Added |
| State Street Corp | 918,504 | $84.7M | 0.00% | −60,805−6.2% | Reduced |
| William Blair Investment Management, LLC | 1,161,285 | $107.1M | 0.30% | −136,288−10.5% | Reduced |
| D. E. Shaw & Co., Inc. | 1,212,162 | $111.8M | 0.08% | +853,305+237.8% | Added |
| Morgan Stanley | 1,259,762 | $116.2M | 0.01% | +809,121+179.5% | Added |
| Deerfield Management Company, L.P. (Series C) | 1,505,872 | $138.9M | 1.78% | +458,178+43.7% | Added |
| Wellington Management Group LLP | 2,211,091 | $203.9M | 0.04% | +2,211,091 | New |
| Vanguard Group Inc | 2,953,170 | $272.4M | 0.00% | −46,917−1.6% | Reduced |
| BlackRock, Inc. | 3,550,848 | $327.5M | 0.01% | +3,653+0.1% | Added |
| Baillie Gifford & Co | 0 | $0 | 0.00% | −1,084,350−100.0% | Sold out |
| Atika Capital Management LLC | 0 | $0 | 0.00% | −187,600−100.0% | Sold out |
| M&G Plc | 0 | $0 | 0.00% | −144,960−100.0% | Sold out |
| Vestal Point Capital, LP | 0 | $0 | 0.00% | −135,000−100.0% | Sold out |
| WCM Investment Management, LLC | 0 | $0 | 0.00% | −107,032−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −103,804−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −91,896−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −82,810−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −63,029−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −58,497−100.0% | Sold out |
| Mitsubishi UFJ Trust & Banking Corp | 0 | $0 | 0.00% | −55,805−100.0% | Sold out |
| Affinity Asset Advisors, LLC | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −43,324−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −41,063−100.0% | Sold out |
| Kopp Family Office, LLC | 0 | $0 | 0.00% | −40,614−100.0% | Sold out |
| Illinois Municipal Retirement Fund | 0 | $0 | 0.00% | −25,424−100.0% | Sold out |
| Oak Ridge Investments LLC | 0 | $0 | 0.00% | −24,261−100.0% | Sold out |
| State of New Jersey Common Pension Fund D | 0 | $0 | 0.00% | −23,216−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −22,000−100.0% | Sold out |
| Neo Ivy Capital Management | 0 | $0 | 0.00% | −21,688−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −19,171−100.0% | Sold out |
| Exome Asset Management LLC | 0 | $0 | 0.00% | −18,600−100.0% | Sold out |
| Monimus Capital Management, LP | 0 | $0 | 0.00% | −13,077−100.0% | Sold out |
| B. Metzler seel. Sohn & Co. AG | 0 | $0 | 0.00% | −12,362−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −12,088−100.0% | Sold out |
| Quantitative Investment Management, LLC | 0 | $0 | 0.00% | −11,692−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −10,782−100.0% | Sold out |
| Hussman Strategic Advisors, Inc. | 0 | $0 | 0.00% | −10,500−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −10,245−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −8,676−100.0% | Sold out |
| Employees Retirement System of Texas | 0 | $0 | 0.00% | −8,580−100.0% | Sold out |
| Fred Alger Management, LLC | 0 | $0 | 0.00% | −6,936−100.0% | Sold out |
| AIA Group Ltd | 0 | $0 | 0.00% | −6,902−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −6,429−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −6,353−100.0% | Sold out |
| ABN AMRO Bank N.V. | 0 | $0 | 0.00% | −6,019−100.0% | Sold out |
| Northwest & Ethical Investments L.P. | 0 | $0 | 0.00% | −5,940−100.0% | Sold out |
| Kornitzer Capital Management Inc | 0 | $0 | 0.00% | −5,800−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −5,735−100.0% | Sold out |
| Numerai GP LLC | 0 | $0 | 0.00% | −5,543−100.0% | Sold out |
| Truist Financial Corp | 0 | $0 | 0.00% | −5,299−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −5,010−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −3,682−100.0% | Sold out |
| Tempus Wealth Planning, LLC | 0 | $0 | 0.00% | −3,562−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −2,848−100.0% | Sold out |
| Pilgrim Partners Asia Pte Ltd | 0 | $0 | 0.00% | −660−100.0% | Sold out |
| Manning & Napier Advisors LLC | 0 | $0 | 0.00% | −437−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −425−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −325−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −299−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −190−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −133−100.0% | Sold out |
| NBC Securities, Inc. | 0 | $0 | 0.00% | −108−100.0% | Sold out |
| Rossby Financial, LCC | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Ci Investments Inc. | 0 | $0 | 0.00% | −99−100.0% | Sold out |
| American National Bank | 0 | $0 | 0.00% | −88−100.0% | Sold out |