| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 11% | -10% | $248,822,799 | -$29,612,330 | 3,353,407 | -11% | BlackRock, Inc. | 30 Sep 2025 |
| CITADEL ADVISORS LLC | 5.8% | $127,107,716 | 1,713,042 | Kenneth Griffin | 29 Sep 2025 | |||
| Flynn James E | 5.1% | $109,541,683 | 1,476,303 | Deerfield Mgmt, L.P. | 06 Nov 2025 | |||
| FMR LLC | 2.5% | -72% | $55,005,358 | -$130,571,372 | 741,312 | -70% | FMR LLC | 30 Sep 2025 |
| WASATCH ADVISORS LP | 0.5% | -92% | $10,084,819 | -$103,003,921 | 135,914 | -91% | Wasatch Advisors LP | 30 Sep 2025 |
As of 30 Sep 2025, 319 institutional investors reported holding 31,093,078 shares of Inspire Medical Systems, Inc. - Common stock, par value $0.001 per share (INSP). This represents 107% of the company’s total 29,061,083 outstanding shares.
The largest institutional shareholders of Inspire Medical Systems, Inc. - Common stock, par value $0.001 per share (INSP) together control 76% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 12% | 3,547,195 | -8.4% | 0% | $263,201,869 |
| VANGUARD GROUP INC | 10% | 3,000,087 | -6.4% | 0% | $222,606,456 |
| CITADEL ADVISORS LLC | 6% | 1,748,409 | +20055% | 0.1% | $129,731,948 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 4.5% | 1,297,573 | +69% | 0.25% | $96,279,917 |
| BAILLIE GIFFORD & CO | 3.7% | 1,084,350 | -2.7% | 0.06% | $80,458,771 |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 3.6% | 1,047,694 | +648% | 1.2% | $77,738,895 |
| STATE STREET CORP | 3.4% | 979,309 | -5% | 0% | $72,664,728 |
| BRAIDWELL LP | 3% | 883,747 | +69% | 1.9% | $65,574,027 |
| UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC | 2.9% | 833,599 | +37% | 0.01% | $61,853,047 |
| FMR LLC | 2.6% | 749,312 | -67% | 0% | $55,598,958 |
| Soleus Capital Management, L.P. | 2.5% | 728,188 | +568% | 2.9% | $54,031,550 |
| JANUS HENDERSON GROUP PLC | 2.3% | 667,078 | +4.1% | 0.02% | $49,496,529 |
| Balyasny Asset Management L.P. | 2.1% | 614,359 | 0.09% | $45,585,438 | |
| Artisan Partners Limited Partnership | 1.8% | 526,242 | +45% | 0.06% | $39,047,156 |
| BNP PARIBAS FINANCIAL MARKETS | 1.8% | 522,180 | 0% | 0.03% | $38,745,756 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.7% | 504,987 | -1.5% | 0% | $37,476,743 |
| UBS Group AG | 1.6% | 467,736 | +8.6% | 0.01% | $34,706,011 |
| MORGAN STANLEY | 1.6% | 450,641 | +49% | 0% | $33,437,643 |
| Champlain Investment Partners, LLC | 1.4% | 407,059 | -1.2% | 0.23% | $30,203,778 |
| Aberdeen Group plc | 1.4% | 396,340 | +63% | 0.05% | $29,967,267 |
| D. E. Shaw & Co., Inc. | 1.2% | 358,857 | +2423% | 0.02% | $26,627,189 |
| MILLENNIUM MANAGEMENT LLC | 1.2% | 356,808 | 0.02% | $26,475,154 | |
| DIMENSIONAL FUND ADVISORS LP | 1.2% | 343,718 | -0.33% | 0.01% | $25,506,313 |
| FRANKLIN RESOURCES INC | 1% | 297,245 | +30% | 0.01% | $22,055,613 |
| BANK OF AMERICA CORP /DE/ | 0.99% | 288,828 | +14% | 0% | $21,431,039 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 1,080,661 | $99,676,874 | +$38,384,647 | $92.23 | 30 |
| 2025 Q3 | 31,093,078 | $2,308,572,740 | -$491,054,295 | $74.20 | 319 |
| 2025 Q2 | 33,831,801 | $4,392,084,401 | -$58,153,296 | $129.77 | 355 |
| 2025 Q1 | 34,119,574 | $5,429,765,770 | +$100,291,872 | $159.28 | 359 |
| 2024 Q4 | 33,398,911 | $6,198,135,879 | -$10,392,454 | $185.38 | 352 |
| 2024 Q3 | 33,329,348 | $7,028,206,302 | -$1,705,882 | $211.05 | 343 |
| 2024 Q2 | 31,606,997 | $4,230,734,481 | -$140,076,478 | $133.83 | 320 |
| 2024 Q1 | 31,802,382 | $6,833,627,583 | +$185,419,402 | $214.79 | 324 |
| 2023 Q4 | 31,022,012 | $6,309,755,960 | +$504,375,008 | $203.43 | 344 |
| 2023 Q3 | 28,380,805 | $5,631,853,601 | -$36,280,954 | $198.44 | 356 |
| 2023 Q2 | 27,993,926 | $9,086,637,911 | -$98,840,711 | $324.64 | 401 |
| 2023 Q1 | 28,513,136 | $6,673,582,259 | +$65,144,358 | $234.07 | 368 |
| 2022 Q4 | 28,312,278 | $7,130,563,019 | +$41,625,853 | $251.88 | 333 |
| 2022 Q3 | 28,267,105 | $5,016,328,749 | +$139,991,536 | $177.37 | 292 |
| 2022 Q2 | 27,431,317 | $5,013,352,590 | +$89,018,351 | $182.67 | 276 |
| 2022 Q1 | 26,955,412 | $6,916,191,060 | +$287,047,237 | $256.69 | 291 |
| 2021 Q4 | 25,849,229 | $5,947,709,044 | +$76,974,096 | $230.06 | 283 |
| 2021 Q3 | 25,385,159 | $5,911,432,728 | +$104,134,188 | $232.88 | 247 |
| 2021 Q2 | 24,992,220 | $4,831,725,707 | -$34,514,146 | $193.26 | 246 |
| 2021 Q1 | 25,166,568 | $5,209,155,369 | +$94,545,681 | $206.99 | 247 |
| 2020 Q4 | 25,155,650 | $4,731,720,287 | -$140,415,322 | $188.09 | 237 |
| 2020 Q3 | 26,177,389 | $3,378,475,696 | -$39,929,859 | $129.05 | 201 |
| 2020 Q2 | 26,892,329 | $2,354,092,452 | +$328,506,311 | $87.02 | 186 |
| 2020 Q1 | 23,290,616 | $1,403,659,501 | -$140,442,230 | $60.28 | 166 |
| 2019 Q4 | 22,240,719 | $1,650,480,334 | +$34,675,200 | $74.21 | 169 |
| 2019 Q3 | 21,815,581 | $1,331,183,700 | +$112,850,027 | $61.02 | 153 |
| 2019 Q2 | 19,969,050 | $1,211,118,776 | +$171,165,829 | $60.65 | 145 |
| 2019 Q1 | 17,810,823 | $1,011,266,751 | +$172,131,617 | $56.78 | 143 |
| 2018 Q4 | 14,874,625 | $628,449,909 | +$162,990,460 | $42.25 | 102 |
| 2018 Q3 | 9,259,018 | $389,611,304 | -$2,907,456 | $42.08 | 85 |
| 2018 Q2 | 9,448,509 | $336,936,129 | +$336,926,999 | $35.66 | 75 |