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.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 4.7M | 12.0% |
| WELLINGTON MANAGEMENT GROUP LLP | 2.4M | 6.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.1M | 5.3% |
| Soleus Capital Management, L.P. | 1.9M | 4.9% |
| AQR CAPITAL MANAGEMENT LLC | 1.9M | 4.7% |
| Assenagon Asset Management S.A. | 1.7M | 4.4% |
| UBS Group AG | 1.6M | 4.2% |
| D. E. Shaw & Co., Inc. | 1.5M | 3.7% |
| NOMURA HOLDINGS INC | 1.4M | 3.5% |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1.3M | 3.3% |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 1.3M | 3.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.3M | 3.2% |
| STATE STREET CORP | 1.2M | 3.1% |
| MORGAN STANLEY | 791.2K | 2.0% |
| Artisan Partners Limited Partnership | 732.3K | 1.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 700.8K | 1.8% |
| BRAIDWELL LP | 677.6K | 1.7% |
| GOLDMAN SACHS GROUP INC | 645.9K | 1.6% |
| 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 | 1.2% |
| BNP PARIBAS FINANCIAL MARKETS | 428.1K | 1.1% |
| RENAISSANCE TECHNOLOGIES LLC | 426.0K | 1.1% |
| ADAR1 Capital Management, LLC | 374.6K | 1.0% |
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 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | Increased | 34.5K | 1.3M | +1.3M |
| 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 |
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.