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INSP

Inspire Medical Systems, Inc.
$46.95 +1.49 (+3.28%) At close · Jul 2
Market Cap
$1.35B
Shares
28,813,153

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 302
Total Value: $1,733,418,160
Total Shares: 33,606,548
Showing 1–100 of 312 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Superinvestors Holding INSP

All superinvestors →
Ray Dalio $8,950,832 Joel Greenblatt $4,525,268

Holder Concentration

Across 302 13F filers
Top Holder
10.6%
Jun 2023 → Mar 2026 · range 9.4% – 13.5%
of institutional value
Top 5
34.2%
Jun 2023 → Mar 2026 · range 28.6% – 39.2%
of institutional value
Top 10
48.4%
Jun 2023 → Mar 2026 · range 39.6% – 51.8%
of institutional value
HHI
354
Jun 2023 → Mar 2026 · range 278 – 416
Broadly held
Showing 100 of 312
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $183,085,986 10.56% 3,549,554
Mid DEERFIELD MANAGEMENT COMPANY, L.P. $139,433,016 8.04% 2,703,238
Mega WELLINGTON MANAGEMENT GROUP LLP $130,804,505 7.55% 2,535,954
Mega MORGAN STANLEY $74,823,697 4.32% 1,450,634
Mega VANGUARD CAPITAL MANAGEMENT LLC $65,338,346 3.77% 1,266,738
Mega D. E. Shaw & Co., Inc. $61,304,737 3.54% 1,188,537
Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC $58,666,266 3.38% 1,137,384
Mega STATE STREET CORP $49,311,047 2.84% 956,011
Large Artisan Partners Limited Partnership $40,262,058 2.32% 780,575
Mid BRAIDWELL LP $34,949,060 2.02% 677,570
Mega GOLDMAN SACHS GROUP INC $34,249,273 1.98% 664,003
Mega UBS Group AG $32,955,906 1.90% 638,928
Mid Soleus Capital Management, L.P. $29,725,502 1.71% 576,299
Mid Vestal Point Capital, LP $27,815,495 1.60% 539,269
Large Assenagon Asset Management S.A. $26,830,574 1.55% 520,174
Mega DEUTSCHE BANK AG\ Bank $26,469,564 1.53% 513,175
Mega GEODE CAPITAL MANAGEMENT, LLC $26,317,868 1.52% 510,234
Large Aberdeen Group plc $24,628,212 1.42% 477,476
Large RENAISSANCE TECHNOLOGIES LLC $24,240,949 1.40% 469,968
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $23,148,429 1.34% 448,787
Mid ADAR1 Capital Management, LLC $20,900,061 1.21% 405,197
Mega CITADEL ADVISORS LLC $20,326,439 1.17% 394,076
Mega MILLENNIUM MANAGEMENT LLC $19,917,410 1.15% 386,146
Large Walleye Capital LLC $18,490,862 1.07% 358,489
Mid RA CAPITAL MANAGEMENT, L.P. $16,797,697 0.97% 325,663
Mega BNP PARIBAS ARBITRAGE, SA $16,493,117 0.95% 319,758
Mega AQR CAPITAL MANAGEMENT LLC $15,920,783 0.92% 308,662
Large Jefferies Financial Group Inc. $15,805,298 0.91% 306,423
Large BAMCO INC /NY/ $15,395,082 0.89% 298,470
Mega Amundi $13,247,291 0.76% 256,830
Mega ROYAL BANK OF CANADA Bank $13,048,243 0.75% 252,971
Mega DIMENSIONAL FUND ADVISORS LP $12,104,277 0.70% 234,670
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $10,861,355 0.63% 210,573
Large ACADIAN ASSET MANAGEMENT LLC $10,805,287 0.62% 209,486
Mega NORTHERN TRUST CORP Bank $10,162,959 0.59% 197,033
Mega BANK OF AMERICA CORP /DE/ Bank $9,597,436 0.55% 186,069
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $9,457,244 0.55% 183,351
Large Cerity Partners LLC $9,357,952 0.54% 181,426
Mega PRICE T ROWE ASSOCIATES INC /MD/ $9,352,123 0.54% 181,313
Large Bridgewater Associates, LP $8,950,832 0.52% 173,533
Mega VANGUARD FIDUCIARY TRUST CO Bank $8,649,966 0.50% 167,700
Large TUDOR INVESTMENT CORP ET AL $8,625,104 0.50% 167,218
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $8,464,278 0.49% 164,100
Mid Champlain Investment Partners, LLC $8,200,652 0.47% 158,989
Mid Y-Intercept (Hong Kong) Ltd $8,163,772 0.47% 158,274
Large Balyasny Asset Management L.P. $7,832,732 0.45% 151,856
Mega Bank of New York Mellon Corp Bank $7,673,242 0.44% 148,764
Mega AMERIPRISE FINANCIAL INC $7,399,201 0.43% 143,451
Mid Longaeva Partners L.P. $7,157,292 0.41% 138,761
Large WASATCH ADVISORS LP $7,149,142 0.41% 138,603
Mid Regal Partners Ltd $7,002,861 0.40% 135,767
Large LOS ANGELES CAPITAL MANAGEMENT LLC $6,857,767 0.40% 132,954
Mid Rock Springs Capital Management LP $6,798,244 0.39% 131,800
Mega PRINCIPAL FINANCIAL GROUP INC $6,539,724 0.38% 126,788
Large Trexquant Investment LP $6,266,454 0.36% 121,490
Mid Rheos Capital Works Inc. $6,055,492 0.35% 117,400
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $5,885,278 0.34% 114,100
Large CAPITAL FUND MANAGEMENT S.A. $5,622,993 0.32% 109,015
Mid Susquehanna Portfolio Strategies, LLC $5,475,578 0.32% 106,157
Large SG Americas Securities, LLC Broker-Dealer $5,423,482 0.31% 105,147
Mega Invesco Ltd. $5,362,924 0.31% 103,973
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $5,168,677 0.30% 100,207
Mid Bellevue Group AG $5,144,331 0.30% 99,735
Large Public Sector Pension Investment Board Pension $4,801,375 0.28% 93,086
Mid RIVERBRIDGE PARTNERS LLC $4,770,840 0.28% 92,494
Large Gotham Asset Management, LLC $4,525,268 0.26% 87,733
Mega JANE STREET GROUP, LLC $4,477,144 0.26% 86,800
Mega Nuveen, LLC $4,393,016 0.25% 85,169
Mega TWO SIGMA INVESTMENTS, LP $4,389,251 0.25% 85,096
Small BROWN CAPITAL MANAGEMENT LLC $4,351,701 0.25% 84,368
Mid Edgestream Partners, L.P. $4,243,383 0.24% 82,268
Large GLENMEDE TRUST CO NA Bank $4,203,510 0.24% 81,495
Large WORLDQUANT MILLENNIUM ADVISORS LLC $3,880,827 0.22% 75,239
Mega FIRST TRUST ADVISORS LP $3,696,274 0.21% 71,661
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $3,656,248 0.21% 70,885
Mega RHUMBLINE ADVISERS $3,502,643 0.20% 67,907
Mega BARCLAYS PLC $3,488,921 0.20% 67,641
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $3,470,302 0.20% 67,280
Large Squarepoint Ops LLC $3,446,266 0.20% 66,814
Large Qube Research & Technologies Ltd $3,413,770 0.20% 66,184
Mega VICTORY CAPITAL MANAGEMENT INC $3,314,530 0.19% 64,260
Mega Legal & General Group Plc $3,176,449 0.18% 61,583
Mega CITADEL ADVISORS LLC $3,136,064 0.18% 60,800
Large BANK OF NOVA SCOTIA Bank $3,094,800 0.18% 60,000
Mega Swiss National Bank Bank $2,862,690 0.17% 55,500
Large Man Group plc $2,810,490 0.16% 54,488
Mega JPMORGAN CHASE & CO $2,765,458 0.16% 53,615
Mid ALGERT GLOBAL LLC $2,726,518 0.16% 52,860
Mid INTECH INVESTMENT MANAGEMENT LLC $2,718,369 0.16% 52,702
Small Bullseye Asset Management LLC $2,637,182 0.15% 51,128
Mega FRANKLIN RESOURCES INC $2,229,646 0.13% 43,227
Large SEI INVESTMENTS CO $2,171,517 0.13% 42,100
Mega NORDEA INVESTMENT MANAGEMENT AB $2,084,862 0.12% 40,420
Mega FMR LLC $1,959,214 0.11% 37,984
Large Empowered Funds, LLC $1,798,902 0.10% 34,876
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $1,778,117 0.10% 34,473
Mid Voleon Capital Management LP $1,708,432 0.10% 33,122
Small AXQ CAPITAL, LP $1,702,862 0.10% 33,014
Mid XTX Topco Ltd $1,675,473 0.10% 32,483
Mega CITIGROUP INC $1,630,237 0.09% 31,606
Key facts CIK 1609550 CUSIP 457730109 13F (30d) 6 filings 5 filers Visit website Investor relations

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