41 institutions reported holding $10.7M of AYTU BIOPHARMA INC (AYTU) in SEC 13F filings for 2026-03-31. Largest institutional holders: Nantahala Capital Management, LLC ($3.0M), Stonepine Capital Management, LLC ($2.2M), AWM Investment Company, Inc. ($1.7M), DIADEMA PARTNERS LP ($963,900), VANGUARD CAPITAL MANAGEMENT LLC ($712,929). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Nantahala Capital Management, LLC | $3.0M | 1.1M | Hold |
| 2 | Stonepine Capital Management, LLC | $2.2M | 792,289 | Trimmed |
| 3 | AWM Investment Company, Inc. | $1.7M | 619,574 | Hold |
| 4 | DIADEMA PARTNERS LP | $963,900 | 353,077 | Added |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $712,929 | 261,146 | New |
| 6 | CROWN ADVISORS MANAGEMENT, INC. | $395,000 | 145,000 | New |
| 7 | TWO SIGMA INVESTMENTS, LP | $332,986 | 121,973 | Added |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $255,864 | 93,723 | Added |
| 9 | Persistent Asset Partners Ltd | $253,609 | 92,897 | Added |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | $252,933 | 92,636 | Added |
| 11 | VANGUARD FIDUCIARY TRUST CO | $128,441 | 47,048 | New |
| 12 | DIMENSIONAL FUND ADVISORS LP | $118,987 | 43,585 | Added |
| 13 | CITADEL ADVISORS LLC | $100,576 | 36,841 | Added |
| 14 | BELLEVUE ASSET MANAGEMENT, LLC | $68,285 | 25,013 | Hold |
| 15 | BlackRock, Inc. | $62,225 | 22,793 | Hold |
| 16 | XTX Topco Ltd | $58,919 | 21,582 | Trimmed |
| 17 | NORTHERN TRUST CORP | $52,331 | 19,169 | Hold |
| 18 | ACADIAN ASSET MANAGEMENT LLC | $27,000 | 10,237 | Hold |
| 19 | Daytona Street Capital LLC | $26,800 | 10,000 | Hold |
| 20 | MAI Capital Management | $9,760 | 3,575 | Hold |
| 21 | UBS Group AG | $4,539 | 1,663 | Trimmed |
| 22 | Tower Research Capital LLC (TRC) | $4,270 | 1,564 | Trimmed |
| 23 | OSAIC HOLDINGS, INC. | $1,259 | 462 | Added |
| 24 | JPMORGAN CHASE & CO | $405 | 154 | New |
| 25 | WELLS FARGO & COMPANY/MN | $347 | 127 | Hold |
Source: SEC Form 13F filings · as of 2026-03-31