INSPIRE MEDICAL SYSTEMS INC (INSP) Institutional Shareholders
INSPIRE MEDICAL SYSTEMS INC (INSP) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.64B in INSP holdings during the latest filing period.
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 $344.61M, representing an estimated gain of +63.06% 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
266
Total Reported Value
$1.64B
Largest Holder
Blackrock, Inc.
Largest Position
$211.34M
Insider Transactions (90d)
8
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 | $344,607,132 | +$133,266,411 | +63.06% | |
| Wellington Management Group Llp | 0.02% | 2,382,660 | $106,290,462 | $173,314,688 | +$67,024,226 | +63.06% | |
| Vanguard Portfolio Management Llc | 0.00% | 2,088,961 | $93,188,550 | $151,951,023 | +$58,762,473 | +63.06% | |
| Soleus Capital Management, L.P. | 2.97% | 1,931,436 | $86,161,360 | $140,492,655 | +$54,331,295 | +63.06% | |
| Aqr Capital Management Llc | 0.03% | 1,856,800 | $80,937,912 | $135,063,632 | +$54,125,720 | +66.87% | |
| Ubs Group Ag | 0.01% | 1,645,511 | $73,406,245 | $119,694,470 | +$46,288,225 | +63.06% | |
| D. E. Shaw & Co., Inc. | 0.04% | 1,470,462 | $65,597,310 | $106,961,406 | +$41,364,096 | +63.06% | |
| Nomura Holdings Inc | 0.26% | 1,369,410 | $61,089,380 | $99,610,883 | +$38,521,503 | +63.06% | |
| Deerfield Management Company, L.P. | 0.60% | 1,296,862 | $57,853,014 | $94,333,742 | +$36,480,728 | +63.06% | |
| Vanguard Capital Management Llc | 0.00% | 1,270,928 | $56,696,098 | $92,447,303 | +$35,751,205 | +63.06% | |
| State Street Corp | 0.00% | 1,206,494 | $53,821,697 | $87,760,374 | +$33,938,677 | +63.06% | |
| Assenagon Asset Management S.A. | 0.05% | 864,395 | $38,560,661 | $62,876,092 | +$24,315,431 | +63.06% | |
| Morgan Stanley | 0.00% | 791,222 | $35,296,449 | $57,553,488 | +$22,257,039 | +63.06% | |
| Artisan Partners Limited Partnership | 0.05% | 732,323 | $32,668,929 | $53,269,175 | +$20,600,246 | +63.06% | |
| Geode Capital Management, Llc | 0.00% | 700,836 | $31,270,244 | $50,978,811 | +$19,708,567 | +63.03% | |
| Braidwell Lp | 1.12% | 677,570 | $30,226,398 | $49,286,442 | +$19,060,044 | +63.06% | |
| Goldman Sachs Group Inc | 0.00% | 645,858 | $28,811,726 | $46,979,711 | +$18,167,985 | +63.06% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 448,787 | $23,148,434 | $32,644,766 | +$9,496,332 | +41.02% | |
| Citadel Advisors Llc | 0.01% | 506,334 | $22,587,560 | $36,830,735 | +$14,243,175 | +63.06% | |
| Sg Americas Securities, Llc | 0.01% | 491,703 | $21,935,000 | $35,766,476 | +$13,831,476 | +63.06% | |
| Bnp Paribas Financial Markets | 0.01% | 428,069 | $19,096,158 | $31,137,739 | +$12,041,581 | +63.06% | |
| Renaissance Technologies LLC | Jim Simons | 0.03% | 426,000 | $19,003,860 | $30,987,240 | +$11,983,380 | +63.06% |
| Adar1 Capital Management, Llc | 0.79% | 374,617 | $16,711,664 | $27,249,641 | +$10,537,977 | +63.06% | |
| Aberdeen Group Plc | 0.02% | 358,968 | $16,013,562 | $26,111,332 | +$10,097,770 | +63.06% | |
| Northern Trust Corp | 0.00% | 334,039 | $14,901,479 | $24,297,997 | +$9,396,518 | +63.06% | |
| Barclays Plc | 0.00% | 307,270 | $13,707,315 | $22,350,820 | +$8,643,505 | +63.06% | |
| Federated Hermes, Inc. | 0.02% | 272,130 | $12,139,719 | $19,794,736 | +$7,655,017 | +63.06% | |
| Nantahala Capital Management, Llc | 0.73% | 269,474 | $12,021,235 | $19,601,539 | +$7,580,304 | +63.06% | |
| Fmr Llc | 0.00% | 267,871 | $11,949,708 | $19,484,937 | +$7,535,229 | +63.06% | |
| Bank Of America Corp | 0.00% | 248,802 | $11,099,059 | $18,097,857 | +$6,998,798 | +63.06% | |
| Walleye Capital Llc | 0.05% | 245,763 | $10,963,487 | $17,876,801 | +$6,913,314 | +63.06% | |
| Rock Springs Capital Management Lp | 0.53% | 244,000 | $10,884,840 | $17,748,560 | +$6,863,720 | +63.06% | |
| Capital Fund Management S.A. | 0.07% | 219,873 | $9,808,534 | $15,993,562 | +$6,185,028 | +63.06% | |
| Charles Schwab Investment Management Inc | 0.00% | 210,091 | $9,372,160 | $15,282,019 | +$5,909,859 | +63.06% | |
| Norges Bank | 0.00% | 198,272 | $8,844,914 | $14,422,305 | +$5,577,391 | +63.06% | |
| Vanguard Fiduciary Trust Co | 0.00% | 190,563 | $8,501,015 | $13,861,553 | +$5,360,538 | +63.06% | |
| Deutsche Bank Ag\ | 0.00% | 176,200 | $7,860,282 | $12,816,788 | +$4,956,506 | +63.06% | |
| Tudor Investment Corp Et Al | 0.03% | 169,095 | $7,543,328 | $12,299,970 | +$4,756,642 | +63.06% | |
| Price T Rowe Associates Inc | 0.00% | 167,733 | $7,483,000 | $12,200,898 | +$4,717,898 | +63.05% | |
| Canada Pension Plan Investment Board | 0.00% | 165,100 | $7,365,111 | $12,009,374 | +$4,644,263 | +63.06% | |
| Bank Of New York Mellon Corp | 0.00% | 148,627 | $6,630,271 | $10,811,128 | +$4,180,857 | +63.06% | |
| Bank Of Nova Scotia | 0.01% | 144,964 | $6,466,844 | $10,544,681 | +$4,077,837 | +63.06% | |
| Quantinno Capital Management Lp | 0.01% | 137,615 | $6,139,005 | $10,010,115 | +$3,871,110 | +63.06% | |
| Edgestream Partners, L.P. | 0.18% | 133,766 | $5,967,301 | $9,730,139 | +$3,762,838 | +63.06% | |
| Principal Financial Group Inc | 0.00% | 128,175 | $5,717,886 | $9,323,450 | +$3,605,564 | +63.06% | |
| Alberta Investment Management Corp | 0.03% | 122,900 | $5,482,569 | $8,939,746 | +$3,457,177 | +63.06% | |
| Rheos Capital Works Inc. | 0.30% | 117,400 | $5,237,000 | $8,539,676 | +$3,302,676 | +63.06% | |
| Dimensional Fund Advisors Lp | 0.00% | 115,907 | $5,171,164 | $8,431,075 | +$3,259,911 | +63.04% | |
| Invesco Ltd. | 0.00% | 110,285 | $4,919,814 | $8,022,131 | +$3,102,317 | +63.06% | |
| Victory Capital Management Inc | 0.00% | 107,657 | $4,802,579 | $7,830,970 | +$3,028,391 | +63.06% |
Frequently asked questions about INSP
Who owns the most INSP stock?
The largest holders of INSP are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for INSPIRE MEDICAL SYSTEMS INC (INSP).
Is INSP widely held by superinvestors?
Many widely followed stocks like INSP appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly INSP is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.