DaveManuel.com · Institutional Ownership · Who Owns It
INSPIRE MED SYS INC (INSP)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
279
Reporting holders
$1.7B
Reported value
131.9%
Of shares outstanding
0.3%
Calls
0.4%
Puts
-25
Holder change
Institutions report 38,133,439 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.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
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 incl. $3.3M options CALL+PUT | 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 |
| SG Americas Securities, LLC | $21.9M | 491,703 | 0.01% | 12q | +367.6%+$17.2M |
| 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 |
| NORGES BANK | $8.8M | 198,272 | 0.00% | 27q | +53.0%+$3.1M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $8.7M incl. $6.3M options CALL+PUT | 53,198 | 0.00% | 30q | -74.7%-$25.7M |
| VANGUARD FIDUCIARY TRUST CO | $8.5M | 190,563 | 0.00% | 2q | +13.6%+$1.0M |
| 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 |
| PRICE T ROWE ASSOCIATES INC /MD/ | $7.5M | 167,733 | 0.00% | 24q | -7.5%-$605.8K |
| 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 |
| Rheos Capital Works Inc. | $5.2M | 117,400 | 0.30% | 13q | HELD |
| DIMENSIONAL FUND ADVISORS LP | $5.2M | 115,907 | 0.00% | 22q | -50.6%-$5.3M |
| 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 |
| Public Sector Pension Investment Board | $4.0M | 90,077 | 0.01% | 8q | -3.2%-$134.2K |
| AMERIPRISE FINANCIAL INC | $3.9M | 87,518 | 0.00% | 29q | -39.0%-$2.5M |
| Susquehanna Portfolio Strategies, LLC | $3.9M | 87,185 | 0.06% | 4q | -17.9%-$846.3K |
| ACADIAN ASSET MANAGEMENT LLC | $3.6M | 81,263 | 0.00% | 4q | -61.2%-$5.7M |
| Pacer Advisors, Inc. | $3.6M | 80,472 | 0.01% | new | NEW |
| 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 | +14.5%+$341.6K |
| Corient Private Wealth LP | $2.6M | 57,535 | 0.00% | 3q | +993.8%+$2.3M |
| Y-Intercept (Hong Kong) Ltd | $2.5M | 55,681 | 0.05% | 5q | -64.8%-$4.6M |
| Bullseye Asset Management LLC | $2.3M | 52,230 | 1.18% | 27q | +2.2%+$49.1K |
| 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 |
| 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 | +460.7%+$1.1M |
| AXQ CAPITAL, LP | $1.3M | 29,630 | 0.14% | 2q | -10.3%-$151.0K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $1.3M | 29,526 | 0.00% | 31q | -14.4%-$220.7K |
| 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 |
| 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 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | $1.1M | 25,559 | 0.00% | 8q | +8.3%+$87.4K |
| VANGUARD ASSET MANAGEMENT, Ltd | $1.1M | 25,473 | 0.00% | 2q | HELD |
| JANE STREET GROUP, LLC | $1.1M CALL+PUT | options only | 0.00% | 25q | OPTIONS |
| MERCER GLOBAL ADVISORS INC /ADV | $1.1M | 24,944 | 0.00% | 2q | +317.3%+$846.1K |
| 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 |
| CANADA LIFE ASSURANCE Co | $965.0K | 21,621 | 0.00% | 31q | 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 |
|---|---|---|---|
| 2026-10-30 | 13G/A | Vanguard Portfolio Management | 6.0% |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-15 | Rondoni John | See Remarks | Sold | 2,641 | $114.3K |
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 |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 68 | $55.1M | 794,296 | 25 | 15 | 13 | 0.0% |
| Q2 2026 | 279 | $1.7B | 38,133,439 | 63 | 96 | 76 | 0.7% |
| Q1 2026 | 304 | $1.8B | 34,886,349 | 52 | 117 | 97 | 1.2% |
| Q4 2025 | 348 | $3.3B | 34,599,237 | 78 | 112 | 112 | 2.7% |
| Q3 2025 | 327 | $2.3B | 31,180,802 | 65 | 98 | 130 | 1.2% |
| Q2 2025 | 361 | $4.4B | 33,809,003 | 48 | 121 | 133 | 0.7% |
| Q1 2025 | 368 | $5.6B | 34,444,135 | 53 | 137 | 111 | 1.3% |
| Q4 2024 | 365 | $6.3B | 33,415,238 | 48 | 114 | 124 | 2.0% |
| Q3 2024 | 356 | $7.4B | 34,089,763 | 74 | 108 | 108 | 3.4% |
| Q2 2024 | 335 | $4.5B | 32,459,466 | 69 | 114 | 98 | 3.1% |
| Q1 2024 | 337 | $7.3B | 32,700,335 | 45 | 117 | 103 | 4.0% |
| Q4 2023 | 350 | $6.7B | 31,827,453 | 54 | 118 | 122 | 2.9% |
| Q3 2023 | 366 | $5.9B | 28,621,850 | 40 | 141 | 111 | 3.6% |
| Q2 2023 | 418 | $9.4B | 28,541,172 | 91 | 117 | 142 | 1.6% |
| Q1 2023 | 375 | $7.1B | 30,111,162 | 61 | 146 | 102 | 1.1% |
| Q4 2022 | 347 | $7.4B | 28,659,186 | 69 | 115 | 106 | 1.9% |
| Q3 2022 | 296 | $5.5B | 30,100,032 | 40 | 104 | 91 | 2.9% |
| Q2 2022 | 282 | $5.5B | 29,357,555 | 35 | 94 | 104 | 2.5% |
| Q1 2022 | 294 | $7.6B | 28,943,932 | 43 | 97 | 95 | 2.4% |
| Q4 2021 | 289 | $7.9B | 33,691,102 | 41 | 83 | 93 | 1.8% |
| Q3 2021 | 252 | $7.8B | 33,510,845 | 31 | 79 | 90 | 0.6% |
| Q2 2021 | 246 | $6.5B | 33,323,010 | 29 | 97 | 68 | 0.5% |
| Q1 2021 | 250 | $7.1B | 33,940,919 | 41 | 71 | 98 | 0.7% |
| Q4 2020 | 238 | $6.8B | 35,967,133 | 46 | 66 | 86 | 1.0% |
| Q3 2020 | 205 | $4.4B | 33,475,704 | 33 | 55 | 82 | 1.7% |
| Q2 2020 | 190 | $3.3B | 37,161,167 | 46 | 72 | 47 | 0.7% |
| Q1 2020 | 167 | $2.1B | 34,230,605 | 27 | 55 | 51 | 0.4% |
| Q4 2019 | 171 | $2.1B | 27,784,970 | 30 | 50 | 46 | 1.7% |
| Q3 2019 | 153 | $1.7B | 27,390,883 | 26 | 44 | 47 | 3.2% |
| Q2 2019 | 145 | $1.6B | 25,172,734 | 26 | 57 | 32 | 1.6% |
| Q1 2019 | 141 | $1.3B | 22,741,787 | 51 | 56 | 23 | 0.5% |
| Q4 2018 | 104 | $980.1M | 23,105,174 | 4 | 4 | 1 | 0.4% |