INSP Inspire Medical Systems, Inc.
Inspire Medical Systems, Inc. (INSP) Institutional Ownership
What the institutions did with INSP last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 4.7M | 12.4% |
| WELLINGTON MANAGEMENT GROUP LLP | 2.4M | 6.2% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.1M | 5.5% |
| Soleus Capital Management, L.P. | 1.9M | 5.1% |
| AQR CAPITAL MANAGEMENT LLC | 1.9M | 4.9% |
| Assenagon Asset Management S.A. | 1.7M | 4.5% |
| UBS Group AG | 1.6M | 4.3% |
| D. E. Shaw & Co., Inc. | 1.5M | 3.9% |
| NOMURA HOLDINGS INC | 1.4M | 3.6% |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 1.3M | 3.4% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.3M | 3.3% |
| STATE STREET CORP | 1.2M | 3.2% |
| MORGAN STANLEY | 791.2K | 2.1% |
| Artisan Partners Limited Partnership | 732.3K | 1.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 700.8K | 1.8% |
| BRAIDWELL LP | 677.6K | 1.8% |
| GOLDMAN SACHS GROUP INC | 645.9K | 1.7% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 546.0K | 1.4% |
| Nantahala Capital Management, LLC | 538.9K | 1.4% |
| CITADEL ADVISORS LLC | 506.3K | 1.3% |
| SG Americas Securities, LLC | 491.7K | 1.3% |
| BNP PARIBAS FINANCIAL MARKETS | 428.1K | 1.1% |
| RENAISSANCE TECHNOLOGIES LLC | 426.0K | 1.1% |
| ADAR1 Capital Management, LLC | 374.6K | 1.0% |
| Aberdeen Group plc | 359.0K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| AQR CAPITAL MANAGEMENT LLC | Increased | 308.7K | 1.9M | +1.5M |
| DEERFIELD MANAGEMENT COMPANY, L.P. | Reduced | 2.7M | 1.3M | -1.4M |
| NOMURA HOLDINGS INC | New | 0 | 1.4M | +1.4M |
| Soleus Capital Management, L.P. | Increased | 576.3K | 1.9M | +1.4M |
| Assenagon Asset Management S.A. | Increased | 520.2K | 1.7M | +1.2M |
| BlackRock, Inc. | Increased | 3.5M | 4.7M | +1.2M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Sold Out | 1.1M | 0 | -1.1M |
| UBS Group AG | Increased | 638.9K | 1.6M | +1.0M |
| MORGAN STANLEY | Reduced | 1.5M | 791.2K | -659.4K |
| Vestal Point Capital, LP | Sold Out | 539.3K | 0 | -539.3K |
| Nantahala Capital Management, LLC | New | 0 | 538.9K | +538.9K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 1.6M | 2.1M | +451.8K |
| SG Americas Securities, LLC | Increased | 105.1K | 491.7K | +386.6K |
| DEUTSCHE BANK AG\ | Reduced | 513.2K | 176.2K | -337.0K |
| RA CAPITAL MANAGEMENT, L.P. | Sold Out | 325.7K | 0 | -325.7K |
| Jefferies Financial Group Inc. | Sold Out | 306.4K | 0 | -306.4K |
| BAMCO INC /NY/ | Sold Out | 298.5K | 0 | -298.5K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 386.1K | 94.1K | -292.0K |
| D. E. Shaw & Co., Inc. | Increased | 1.2M | 1.5M | +281.9K |
| FEDERATED HERMES, INC. | Increased | 91 | 272.1K | +272.0K |
| STATE STREET CORP | Increased | 956.0K | 1.2M | +250.5K |
| ROYAL BANK OF CANADA | Reduced | 253.0K | 7.7K | -245.3K |
| Amundi | Reduced | 256.8K | 12.6K | -244.3K |
| BARCLAYS PLC | Increased | 67.6K | 307.3K | +239.6K |
| FMR LLC | Increased | 38.0K | 267.9K | +229.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 510.2K | 700.8K | +190.6K |
| Bridgewater Associates, LP | Sold Out | 173.5K | 0 | -173.5K |
| Cerity Partners LLC | Reduced | 181.4K | 20.0K | -161.5K |
| Champlain Investment Partners, LLC | Sold Out | 159.0K | 0 | -159.0K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 210.6K | 53.2K | -157.4K |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 2.5M | 2.4M | -153.3K |
| Balyasny Asset Management L.P. | Sold Out | 151.9K | 0 | -151.9K |
| Longaeva Partners L.P. | Sold Out | 138.8K | 0 | -138.8K |
| WASATCH ADVISORS LP | Sold Out | 138.6K | 0 | -138.6K |
| NORTHERN TRUST CORP | Increased | 197.0K | 334.0K | +137.0K |
| Regal Partners Ltd | Sold Out | 135.8K | 0 | -135.8K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Reduced | 133.0K | 141 | -132.8K |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 209.5K | 81.3K | -128.2K |
| Alberta Investment Management Corp | New | 0 | 122.9K | +122.9K |
| Trexquant Investment LP | Sold Out | 121.5K | 0 | -121.5K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 234.7K | 115.9K | -118.8K |
| Aberdeen Group plc | Reduced | 477.5K | 359.0K | -118.5K |
| Walleye Capital LLC | Reduced | 358.5K | 245.8K | -112.7K |
| CITADEL ADVISORS LLC | Increased | 394.1K | 506.3K | +112.3K |
| Rock Springs Capital Management LP | Increased | 131.8K | 244.0K | +112.2K |
| Quantinno Capital Management LP | Increased | 26.6K | 137.6K | +111.1K |
| CAPITAL FUND MANAGEMENT S.A. | Increased | 109.0K | 219.9K | +110.9K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 319.8K | 428.1K | +108.3K |
| Y-Intercept (Hong Kong) Ltd | Reduced | 158.3K | 55.7K | -102.6K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Sold Out | 100.2K | 0 | -100.2K |
| Integral Health Asset Management, LLC | New | 0 | 100.0K | +100.0K |
| Bellevue Group AG | Sold Out | 99.7K | 0 | -99.7K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Increased | 448.8K | 546.0K | +97.2K |
| RIVERBRIDGE PARTNERS LLC | Sold Out | 92.5K | 0 | -92.5K |
| TWO SIGMA INVESTMENTS, LP | Sold Out | 85.1K | 0 | -85.1K |
| BANK OF NOVA SCOTIA | Increased | 60.0K | 145.0K | +85.0K |
| GLENMEDE TRUST CO NA | Sold Out | 81.5K | 0 | -81.5K |
| Pacer Advisors, Inc. | New | 0 | 80.5K | +80.5K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Sold Out | 67.3K | 0 | -67.3K |
| Qube Research & Technologies Ltd | Sold Out | 66.2K | 0 | -66.2K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.