INSPIRE MED SYS INC (INSP)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
257
Reporting holders
$1.7B
Reported value
129.3%
Of shares outstanding
0.7%
Held as options
-23
Holder change
Institutions report 37,367,015 shares against 28,910,375 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $211.3M | 4,737,519 | 0.00% | 8q | +33.5%+$53.0M |
| WELLINGTON MANAGEMENT GROUP LLP | $106.3M | 2,382,660 | 0.02% | 3q | -6.0%-$6.8M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $93.2M | 2,088,961 | 0.00% | 2q | +27.6%+$20.2M |
| Soleus Capital Management, L.P. | $86.2M | 1,931,436 | 2.97% | 6q | +235.1%+$60.5M |
| AQR CAPITAL MANAGEMENT LLC | $80.9M | 1,856,800 | 0.03% | 29q | +501.6%+$67.5M |
| Assenagon Asset Management S.A. | $77.1M | 1,728,790 | 0.05% | 3q | +232.3%+$53.9M |
| UBS Group AG | $73.4M | 1,645,511 | 0.01% | 31q | +157.5%+$44.9M |
| D. E. Shaw & Co., Inc. | $65.6M | 1,470,462 | 0.03% | 31q | +23.7%+$12.6M |
| NOMURA HOLDINGS INC | $61.1M | 1,369,410 | 0.07% | new | NEW |
| DEERFIELD MANAGEMENT COMPANY, L.P. | $57.9M | 1,296,862 | 0.60% | 5q | -52.0%-$62.7M |
| VANGUARD CAPITAL MANAGEMENT LLC | $56.7M | 1,270,928 | 0.00% | 2q | HELD |
| STATE STREET CORP | $53.8M | 1,206,494 | 0.00% | 31q | +26.2%+$11.2M |
| MORGAN STANLEY | $35.3M | 791,222 | 0.00% | 33q | -45.5%-$29.4M |
| Artisan Partners Limited Partnership | $32.7M | 732,323 | 0.05% | 10q | -6.2%-$2.2M |
| GEODE CAPITAL MANAGEMENT, LLC | $31.3M | 700,836 | 0.00% | 31q | +37.4%+$8.5M |
| BRAIDWELL LP | $30.2M | 677,570 | 1.12% | 12q | HELD |
| GOLDMAN SACHS GROUP INC | $28.8M | 645,858 | 0.00% | 31q | -2.7%-$809.4K |
| CITADEL ADVISORS LLC | $25.9M | 506,334 | 0.00% | 31q | +28.5%+$5.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $24.4M | 546,020 | 0.00% | 28q | +21.7%+$4.3M |
| Nantahala Capital Management, LLC | $24.0M | 538,948 | 0.40% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $19.1M | 428,069 | 0.01% | 30q | +33.9%+$4.8M |
| RENAISSANCE TECHNOLOGIES LLC | $19.0M | 426,000 | 0.03% | 16q | -9.4%-$2.0M |
| ADAR1 Capital Management, LLC | $16.7M | 374,617 | 0.76% | 4q | -7.5%-$1.4M |
| Aberdeen Group plc | $16.0M | 358,968 | 0.02% | 11q | -24.8%-$5.3M |
| NORTHERN TRUST CORP | $14.9M | 334,039 | 0.00% | 31q | +69.5%+$6.1M |
| BARCLAYS PLC | $13.7M | 307,270 | 0.00% | 31q | +354.3%+$10.7M |
| FEDERATED HERMES, INC. | $12.1M | 272,130 | 0.02% | 2q | +298944.0%+$12.1M |
| FMR LLC | $11.9M | 267,871 | 0.00% | 27q | +605.2%+$10.3M |
| BANK OF AMERICA CORP /DE/ | $11.1M | 248,802 | 0.00% | 31q | +33.7%+$2.8M |
| Walleye Capital LLC | $11.0M | 245,763 | 0.04% | 20q | -31.4%-$5.0M |
| Rock Springs Capital Management LP | $10.9M | 244,000 | 0.53% | 12q | +85.1%+$5.0M |
| CAPITAL FUND MANAGEMENT S.A. | $9.8M | 219,873 | 0.04% | 12q | +101.7%+$4.9M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $9.4M | 210,091 | 0.00% | 31q | +14.6%+$1.2M |
| Sixth Street Partners Management Company, L.P. | $9.4M | 210,091 | 0.00% | new | NEW |
| NORGES BANK | $8.8M | 198,272 | 0.00% | 27q | +53.0%+$3.1M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $8.7M | 53,198 | 0.00% | 30q | -74.7%-$25.7M |
| VANGUARD FIDUCIARY TRUST CO | $8.5M | 190,563 | 0.00% | 2q | +13.6%+$1.0M |
| Public Sector Pension Investment Board | $8.0M | 180,154 | 0.01% | 8q | +93.5%+$3.9M |
| DEUTSCHE BANK AG\ | $7.9M | 176,200 | 0.00% | 33q | -65.7%-$15.0M |
| TUDOR INVESTMENT CORP ET AL | $7.5M | 169,095 | 0.01% | 9q | +1.1%+$83.7K |
| CANADA PENSION PLAN INVESTMENT BOARD | $7.4M | 165,100 | 0.00% | 6q | +0.6%+$44.6K |
| Bank of New York Mellon Corp | $6.6M | 148,627 | 0.00% | 31q | HELD |
| BANK OF NOVA SCOTIA | $6.5M | 144,964 | 0.01% | 4q | +141.6%+$3.8M |
| Quantinno Capital Management LP | $6.1M | 137,615 | 0.01% | 6q | +418.2%+$5.0M |
| Edgestream Partners, L.P. | $6.0M | 133,766 | 0.18% | 6q | +62.6%+$2.3M |
| PRINCIPAL FINANCIAL GROUP INC | $5.7M | 128,175 | 0.00% | 29q | +1.1%+$61.9K |
| Alberta Investment Management Corp | $5.5M | 122,900 | 0.03% | new | NEW |
| DIMENSIONAL FUND ADVISORS LP | $5.2M | 115,907 | 0.00% | 22q | -50.6%-$5.3M |
| Corient Private Wealth LP | $5.1M | 115,060 | 0.00% | 3q | +2087.5%+$4.9M |
| Invesco Ltd. | $4.9M | 110,285 | 0.00% | 31q | +6.1%+$281.6K |
| VICTORY CAPITAL MANAGEMENT INC | $4.8M | 107,657 | 0.00% | 30q | +67.5%+$1.9M |
| Integral Health Asset Management, LLC | $4.5M | 100,000 | 0.18% | new | NEW |
| MILLENNIUM MANAGEMENT LLC | $4.2M | 94,149 | 0.00% | 24q | -75.6%-$13.0M |
| AMERIPRISE FINANCIAL INC | $3.9M | 87,518 | 0.00% | 29q | -69.5%-$8.9M |
| Susquehanna Portfolio Strategies, LLC | $3.9M | 87,185 | 0.06% | 4q | -17.9%-$846.3K |
| CITIGROUP INC | $3.5M | 77,780 | 0.00% | 31q | +146.1%+$2.1M |
| NEW YORK STATE COMMON RETIREMENT FUND | $3.2M | 72,413 | 0.00% | 31q | +2.2%+$68.2K |
| Voleon Capital Management LP | $3.2M | 72,218 | 0.06% | 4q | +118.0%+$1.7M |
| Nuveen, LLC | $3.1M | 70,046 | 0.00% | 6q | -17.8%-$674.6K |
| RHUMBLINE ADVISERS | $2.9M | 64,202 | 0.00% | 31q | -5.5%-$165.3K |
| Legal & General Group Plc | $2.7M | 61,236 | 0.00% | 31q | -0.6%-$15.5K |
| ALGERT GLOBAL LLC | $2.7M | 60,517 | 0.03% | 20q | -42.8%-$2.0M |
| Y-Intercept (Hong Kong) Ltd | $2.5M | 55,681 | 0.05% | 5q | -64.8%-$4.6M |
| Swiss National Bank | $2.3M | 52,000 | 0.00% | 31q | -6.3%-$156.1K |
| Empowered Funds, LLC | $2.3M | 50,657 | 0.01% | 2q | +45.2%+$704.0K |
| MERCER GLOBAL ADVISORS INC /ADV | $2.2M | 49,888 | 0.00% | 2q | +734.7%+$2.0M |
| LPL Financial LLC | $2.1M | 47,947 | 0.00% | 25q | +316.6%+$1.6M |
| BROWN CAPITAL MANAGEMENT LLC | $2.0M | 43,951 | 0.39% | 10q | -47.9%-$1.8M |
| JPMORGAN CHASE & CO | $1.9M | 41,988 | 0.00% | 31q | -21.7%-$538.3K |
| NORDEA INVESTMENT MANAGEMENT AB | $1.9M | 44,381 | 0.00% | 5q | +9.8%+$172.0K |
| Brevan Howard Capital Management LP | $1.9M | 43,158 | 0.01% | 6q | +690.9%+$1.7M |
| ALLIANCEBERNSTEIN L.P. | $1.7M | 33,715 | 0.00% | 31q | +122.4%+$957.1K |
| WINTON GROUP Ltd | $1.7M | 37,412 | 0.05% | 9q | +790.8%+$1.5M |
| Creative Planning | $1.7M | 37,373 | 0.00% | 24q | +230.6%+$1.2M |
| Entropy Technologies, LP | $1.7M | 37,293 | 0.07% | new | NEW |
| Gotham Asset Management, LLC | $1.6M | 35,823 | 0.00% | 4q | -59.2%-$2.3M |
| FIRST TRUST ADVISORS LP | $1.5M | 34,238 | 0.00% | 3q | -52.2%-$1.7M |
| Jump Financial, LLC | $1.4M | 31,926 | 0.01% | 5q | +289.3%+$1.1M |
| Mariner, LLC | $1.3M | 30,190 | 0.00% | new | NEW |
| WELLS FARGO & COMPANY/MN | $1.3M | 29,771 | 0.00% | 31q | +180.3%+$854.3K |
| AXQ CAPITAL, LP | $1.3M | 29,630 | 0.14% | 2q | -10.3%-$151.0K |
| WORLDQUANT MILLENNIUM ADVISORS LLC | $1.3M | 28,359 | 0.00% | 3q | -62.3%-$2.1M |
| PRUDENTIAL FINANCIAL INC | $1.2M | 27,720 | 0.00% | 8q | +16.9%+$178.7K |
| FRANKLIN RESOURCES INC | $1.2M | 27,693 | 0.00% | 31q | -35.9%-$693.0K |
| RAYMOND JAMES FINANCIAL INC | $1.2M | 26,412 | 0.00% | new | NEW |
| Palo Alto Investors LP | $1.2M | 26,316 | 0.05% | 3q | +200.0%+$782.6K |
| Odyssean, LLC | $1.2M | 26,282 | 0.19% | new | NEW |
| Quantbot Technologies LP | $1.2M | 25,954 | 0.05% | new | NEW |
| ExodusPoint Capital Management, LP | $1.1M | 25,704 | 0.01% | new | NEW |
| VANGUARD ASSET MANAGEMENT, Ltd | $1.1M | 25,473 | 0.00% | 2q | HELD |
| JANE STREET GROUP, LLC | $1.1M | options only | 0.00% | 25q | OPTIONS |
| Louisiana State Employees Retirement System | $1.1M | 23,000 | 0.01% | 8q | +100.0%+$553.1K |
| Squarepoint Ops LLC | $1.1M | 24,259 | 0.00% | 4q | -63.7%-$1.9M |
| LAZARD ASSET MANAGEMENT LLC | $974.3K | 21,840 | 0.00% | 23q | +15.3%+$129.5K |
| Vanguard Global Advisers, LLC | $960.5K | 21,530 | 0.00% | 2q | +102.6%+$486.4K |
| INTECH INVESTMENT MANAGEMENT LLC | $948.2K | 21,255 | 0.01% | 10q | -59.7%-$1.4M |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $915.6K | 20,525 | 0.00% | 30q | -2.3%-$21.4K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $896.6K | 20,099 | 0.00% | 5q | +198.1%+$595.8K |
| Cerity Partners LLC | $890.4K | 19,959 | 0.00% | 2q | -89.0%-$7.2M |
| TD Asset Management Inc | $860.5K | 19,290 | 0.00% | 3q | HELD |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-13 | 13G/A | Soleus Capital Master Fund, L.P.with 5 co-filers | 6.7% |
| 2026-08-12 | 13G | AQR Capital Management, LLCwith 1 co-filers | 6.4% |
| 2026-07-31 | 13G/A | Vanguard Portfolio Management | 7.4% |
| 2026-07-28 | 13G/A | BlackRock, Inc. | 14.4% |
| 2026-07-02 | 13G | D. E. Shaw & Co., L.P.with 1 co-filers | 5.1% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 257 | $1.7B | 37,367,015 | 62 | 89 | 71 | 0.7% |
| Q1 2026 | 280 | $1.8B | 34,269,654 | 50 | 108 | 89 | 1.2% |
| Q4 2025 | 320 | $3.2B | 33,805,557 | 74 | 98 | 107 | 2.8% |
| Q3 2025 | 296 | $2.3B | 30,833,111 | 59 | 93 | 116 | 1.2% |
| Q2 2025 | 331 | $4.4B | 33,299,760 | 44 | 112 | 121 | 0.7% |
| Q1 2025 | 338 | $5.5B | 33,904,873 | 51 | 127 | 100 | 1.3% |
| Q4 2024 | 331 | $6.2B | 32,708,948 | 45 | 101 | 114 | 2.0% |
| Q3 2024 | 321 | $7.3B | 33,340,196 | 67 | 99 | 98 | 3.4% |
| Q2 2024 | 300 | $4.4B | 31,565,565 | 65 | 99 | 90 | 3.1% |
| Q1 2024 | 295 | $7.0B | 31,524,293 | 42 | 98 | 90 | 3.9% |
| Q4 2023 | 305 | $6.5B | 30,831,946 | 48 | 101 | 106 | 2.9% |
| Q3 2023 | 319 | $5.6B | 27,162,247 | 38 | 122 | 97 | 3.6% |
| Q2 2023 | 357 | $8.6B | 25,981,705 | 75 | 96 | 126 | 1.7% |
| Q1 2023 | 316 | $6.5B | 27,573,832 | 50 | 117 | 93 | 1.1% |
| Q4 2022 | 278 | $6.5B | 25,416,596 | 52 | 96 | 82 | 2.1% |
| Q3 2022 | 304 | $5.2B | 28,256,211 | 41 | 110 | 92 | 3.1% |
| Q2 2022 | 288 | $5.2B | 27,433,980 | 35 | 96 | 108 | 2.7% |
| Q1 2022 | 300 | $7.1B | 26,957,656 | 43 | 98 | 99 | 2.6% |
| Q4 2021 | 292 | $6.1B | 25,890,394 | 41 | 84 | 94 | 2.3% |
| Q3 2021 | 255 | $6.0B | 25,388,984 | 31 | 80 | 92 | 0.7% |
| Q2 2021 | 249 | $4.9B | 25,002,866 | 29 | 97 | 70 | 0.7% |
| Q1 2021 | 254 | $5.3B | 25,170,122 | 42 | 71 | 101 | 1.0% |
| Q4 2020 | 241 | $4.8B | 25,170,393 | 46 | 66 | 89 | 1.5% |
| Q3 2020 | 208 | $3.5B | 26,177,814 | 33 | 56 | 84 | 2.2% |
| Q2 2020 | 193 | $2.4B | 26,894,377 | 46 | 74 | 48 | 0.9% |
| Q1 2020 | 169 | $1.4B | 23,909,748 | 27 | 56 | 52 | 0.5% |
| Q4 2019 | 174 | $1.7B | 22,420,408 | 30 | 51 | 47 | 2.1% |
| Q3 2019 | 156 | $1.4B | 21,818,118 | 27 | 45 | 47 | 4.0% |
| Q2 2019 | 147 | $1.3B | 20,241,267 | 26 | 57 | 33 | 2.0% |
| Q1 2019 | 143 | $1.0B | 17,811,647 | 52 | 57 | 23 | 0.6% |
| Q4 2018 | 105 | $638.0M | 15,008,947 | 4 | 5 | 1 | 0.6% |