AYTU Aytu BioPharma, Inc.
Aytu BioPharma, Inc. (AYTU) Institutional Ownership
What the institutions did with AYTU 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 |
|---|---|---|
| Nantahala Capital Management, LLC | 2.2M | 44.2% |
| Stonepine Capital Management, LLC | 912.9K | 18.5% |
| AWM Investment Company, Inc. | 619.6K | 12.6% |
| VANGUARD CAPITAL MANAGEMENT LLC | 261.1K | 5.3% |
| CROWN ADVISORS MANAGEMENT, INC. | 200.0K | 4.1% |
| DIADEMA PARTNERS LP | 148.5K | 3.0% |
| TWO SIGMA INVESTMENTS, LP | 105.3K | 2.1% |
| RENAISSANCE TECHNOLOGIES LLC | 104.8K | 2.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 93.6K | 1.9% |
| CITADEL ADVISORS LLC | 49.4K | 1.0% |
| VANGUARD FIDUCIARY TRUST CO | 47.0K | 1.0% |
| DIMENSIONAL FUND ADVISORS LP | 45.3K | 0.9% |
| Persistent Asset Partners Ltd | 38.0K | 0.8% |
| NORTHERN TRUST CORP | 27.9K | 0.6% |
| BELLEVUE ASSET MANAGEMENT, LLC | 25.0K | 0.5% |
| BlackRock, Inc. | 22.8K | 0.5% |
| XTX Topco Ltd | 21.4K | 0.4% |
| ACADIAN ASSET MANAGEMENT LLC | 10.2K | 0.2% |
| Daytona Street Capital LLC | 10.0K | 0.2% |
| UBS Group AG | 2.4K | 0.0% |
| Tower Research Capital LLC (TRC) | 2.2K | 0.0% |
| OSAIC HOLDINGS, INC. | 462 | 0.0% |
| ROYAL BANK OF CANADA | 378 | 0.0% |
| JPMORGAN CHASE & CO | 154 | 0.0% |
| WELLS FARGO & COMPANY/MN | 127 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Nantahala Capital Management, LLC | Increased | 1.1M | 2.2M | +1.1M |
| DIADEMA PARTNERS LP | Reduced | 353.1K | 148.5K | -204.5K |
| Stonepine Capital Management, LLC | Increased | 792.3K | 912.9K | +120.6K |
| CROWN ADVISORS MANAGEMENT, INC. | Increased | 145.0K | 200.0K | +55.0K |
| Persistent Asset Partners Ltd | Reduced | 92.9K | 38.0K | -54.9K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 122.0K | 105.3K | -16.6K |
| CITADEL ADVISORS LLC | Increased | 36.8K | 49.4K | +12.6K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 93.7K | 104.8K | +11.1K |
| NORTHERN TRUST CORP | Increased | 19.2K | 27.9K | +8.8K |
| MAI Capital Management | Sold Out | 3.6K | 0 | -3.6K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 43.6K | 45.3K | +1.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 92.6K | 93.6K | +1.0K |
| UBS Group AG | Increased | 1.7K | 2.4K | +714 |
| Tower Research Capital LLC (TRC) | Increased | 1.6K | 2.2K | +668 |
| ROYAL BANK OF CANADA | Increased | 36 | 378 | +342 |
| XTX Topco Ltd | Reduced | 21.6K | 21.4K | -166 |
| BARCLAYS PLC | New | 0 | 50 | +50 |
| NewEdge Advisors, LLC | Sold Out | 21 | 0 | -21 |
| FNY Investment Advisers, LLC | Increased | 90 | 110 | +20 |
| Farther Finance Advisors, LLC | New | 0 | 4 | +4 |
| Arax Advisory Partners | New | 0 | 2 | +2 |
| SBI Securities Co., Ltd. | Reduced | 11 | 10 | -1 |
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.