INSP Institutional Ownership & Shareholders
INSPIRE MEDICAL SYSTEMS INC (INSP) is currently held by 283 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $1.67B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of INSP tracked by InsiderSet, reporting ownership valued at approximately $211.34M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $322.63M, representing an estimated gain of +52.66% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed INSP value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Wellington Management Group Llp, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in INSPIRE MEDICAL SYSTEMS INC (INSP).
This page ranks the largest institutional INSP shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
283
Total Reported Value
$1.67B
Largest Holder
Blackrock, Inc.
Largest Position
$211.34M
Insider Transactions (90d)
6
Latest Filing Quarter
Q2 2026
New Institutional Positions
59
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 4,737,519 | $211,340,721 | $322,625,044 | +$111,284,323 | +52.66% | |
| Wellington Management Group Llp | 0.02% | 2,382,660 | $106,290,462 | $162,259,146 | +$55,968,684 | +52.66% | |
| Vanguard Portfolio Management Llc | 0.00% | 2,088,961 | $93,188,550 | $142,258,244 | +$49,069,694 | +52.66% | |
| Soleus Capital Management, L.P. | 2.97% | 1,931,436 | $86,161,360 | $131,530,792 | +$45,369,432 | +52.66% | |
| Aqr Capital Management Llc | 0.03% | 1,856,800 | $80,937,912 | $126,448,080 | +$45,510,168 | +56.23% | |
| Ubs Group Ag | 0.01% | 1,645,511 | $73,406,245 | $112,059,299 | +$38,653,054 | +52.66% | |
| D. E. Shaw & Co., Inc. | 0.04% | 1,470,462 | $65,597,310 | $100,138,462 | +$34,541,152 | +52.66% | |
| Nomura Holdings Inc | 0.26% | 1,369,410 | $61,089,380 | $93,256,821 | +$32,167,441 | +52.66% | |
| Deerfield Management Company, L.P. | 0.60% | 1,296,862 | $57,853,014 | $88,316,302 | +$30,463,288 | +52.66% | |
| Vanguard Capital Management Llc | 0.00% | 1,270,928 | $56,696,098 | $86,550,197 | +$29,854,099 | +52.66% | |
| State Street Corp | 0.00% | 1,206,494 | $53,821,697 | $82,162,241 | +$28,340,544 | +52.66% | |
| Assenagon Asset Management S.A. | 0.04% | 643,315 | $44,620,328 | $43,809,752 | -$810,577 | -1.82% | |
| Morgan Stanley | 0.00% | 791,222 | $35,296,449 | $53,882,218 | +$18,585,769 | +52.66% | |
| Artisan Partners Limited Partnership | 0.05% | 732,323 | $32,668,929 | $49,871,196 | +$17,202,267 | +52.66% | |
| Geode Capital Management, Llc | 0.00% | 700,836 | $31,270,244 | $47,726,932 | +$16,456,688 | +52.63% | |
| Braidwell Lp | 1.12% | 677,570 | $30,226,398 | $46,142,517 | +$15,916,119 | +52.66% | |
| Goldman Sachs Group Inc | 0.00% | 645,858 | $28,811,726 | $43,982,930 | +$15,171,204 | +52.66% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 448,787 | $23,148,434 | $30,562,395 | +$7,413,961 | +32.03% | |
| Citadel Advisors Llc | 0.01% | 506,334 | $22,587,560 | $34,481,345 | +$11,893,785 | +52.66% | |
| Principal Financial Group Inc | 0.01% | 321,994 | $22,333,505 | $21,927,791 | -$405,714 | -1.82% | |
| Sg Americas Securities, Llc | 0.01% | 491,703 | $21,935,000 | $33,484,974 | +$11,549,974 | +52.66% | |
| Bnp Paribas Financial Markets | 0.01% | 428,069 | $19,096,158 | $29,151,499 | +$10,055,341 | +52.66% | |
| Renaissance Technologies LLC | Jim Simons | 0.03% | 426,000 | $19,003,860 | $29,010,600 | +$10,006,740 | +52.66% |
| Adar1 Capital Management, Llc | 0.79% | 374,617 | $16,711,664 | $25,511,418 | +$8,799,754 | +52.66% | |
| Aberdeen Group Plc | 0.02% | 358,968 | $16,013,562 | $24,445,721 | +$8,432,159 | +52.66% | |
| Northern Trust Corp | 0.00% | 334,039 | $14,901,479 | $22,748,056 | +$7,846,577 | +52.66% | |
| Barclays Plc | 0.00% | 307,270 | $13,707,315 | $20,925,087 | +$7,217,772 | +52.66% | |
| Federated Hermes, Inc. | 0.02% | 272,130 | $12,139,719 | $18,532,053 | +$6,392,334 | +52.66% | |
| Nantahala Capital Management, Llc | 0.73% | 269,474 | $12,021,235 | $18,351,179 | +$6,329,944 | +52.66% | |
| Fmr Llc | 0.00% | 267,871 | $11,949,708 | $18,242,015 | +$6,292,307 | +52.66% | |
| Bank Of America Corp | 0.00% | 248,802 | $11,099,059 | $16,943,416 | +$5,844,357 | +52.66% | |
| Walleye Capital Llc | 0.05% | 245,763 | $10,963,487 | $16,736,460 | +$5,772,973 | +52.66% | |
| Rock Springs Capital Management Lp | 0.53% | 244,000 | $10,884,840 | $16,616,400 | +$5,731,560 | +52.66% | |
| Capital Fund Management S.A. | 0.07% | 219,873 | $9,808,534 | $14,973,351 | +$5,164,817 | +52.66% | |
| Charles Schwab Investment Management Inc | 0.00% | 210,091 | $9,372,160 | $14,307,197 | +$4,935,037 | +52.66% | |
| Norges Bank | 0.00% | 198,272 | $8,844,914 | $13,502,323 | +$4,657,409 | +52.66% | |
| Vanguard Fiduciary Trust Co | 0.00% | 190,563 | $8,501,015 | $12,977,340 | +$4,476,325 | +52.66% | |
| Deutsche Bank Ag\ | 0.00% | 176,200 | $7,860,282 | $11,999,220 | +$4,138,938 | +52.66% | |
| Tudor Investment Corp Et Al | 0.03% | 169,095 | $7,543,328 | $11,515,369 | +$3,972,041 | +52.66% | |
| Price T Rowe Associates Inc | 0.00% | 167,733 | $7,483,000 | $11,422,617 | +$3,939,617 | +52.65% | |
| Canada Pension Plan Investment Board | 0.00% | 165,100 | $7,365,111 | $11,243,310 | +$3,878,199 | +52.66% | |
| Bank Of New York Mellon Corp | 0.00% | 148,627 | $6,630,271 | $10,121,499 | +$3,491,228 | +52.66% | |
| Bank Of Nova Scotia | 0.01% | 144,964 | $6,466,844 | $9,872,048 | +$3,405,204 | +52.66% | |
| Quantinno Capital Management Lp | 0.01% | 137,615 | $6,139,005 | $9,371,582 | +$3,232,577 | +52.66% | |
| Edgestream Partners, L.P. | 0.18% | 133,766 | $5,967,301 | $9,109,465 | +$3,142,164 | +52.66% | |
| Alberta Investment Management Corp | 0.03% | 122,900 | $5,482,569 | $8,369,490 | +$2,886,921 | +52.66% | |
| Rheos Capital Works Inc. | 0.30% | 117,400 | $5,237,000 | $7,994,940 | +$2,757,940 | +52.66% | |
| Dimensional Fund Advisors Lp | 0.00% | 115,907 | $5,171,164 | $7,893,267 | +$2,722,103 | +52.64% | |
| Invesco Ltd. | 0.00% | 110,285 | $4,919,814 | $7,510,408 | +$2,590,594 | +52.66% | |
| Victory Capital Management Inc | 0.00% | 107,657 | $4,802,579 | $7,331,442 | +$2,528,863 | +52.66% |
Frequently asked questions about INSP
Who are the largest institutional holders of INSP?
The largest institutional holders of INSP reported in the latest SEC Form 13F filings include Blackrock, Inc., Wellington Management Group Llp, Vanguard Portfolio Management Llc, Soleus Capital Management, L.P., and Aqr Capital Management Llc. InsiderSet ranks institutional holders by their latest reported INSP position.
What is INSP institutional ownership?
This page tracks INSP positions reported by institutional investment managers through SEC Form 13F. INSPIRE MEDICAL SYSTEMS INC (INSP) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own INSP?
InsiderSet currently tracks 283 institutional managers reporting INSP holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of INSP shareholders.
How much INSP stock do institutions own?
Institutional investment managers disclosed approximately $1.67B in INSP holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was INSP institutional ownership last updated?
The latest INSP institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional INSP holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its INSP position after the reporting date.
Are institutions buying or selling INSP?
Institutional buying and selling can be analyzed by comparing INSP positions across consecutive 13F reporting periods. InsiderSet's INSP Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View INSP ownership changes.
How has INSP institutional ownership changed over time?
InsiderSet tracks INSP institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.