CUSIP: 760273102 | UD | Healthcare · Biotechnology | Micro Cap | 205 institutional holders
5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.
| Holder | Shares | % of Class | Change | Event Date | vs 13F |
|---|---|---|---|---|---|
| 13D/ABVF Inc | 0 | 0.0% | Fell below 5% | Jan 28, 2026 | 28d ahead of 13F (10,333,600 sh) · −10,333,600 |
| 13D/AVersant Vantage I GP, L.P. with Versant Ventures V (Canada), L.P., Versant Venture Capital V (Canada) LP, Versant Ventures V Gp-Gp (Canada), Inc., +7 more | 72,211 | 0.2% | Newly reported | Nov 19, 2025 | No 13F filer matched |
| Style | Turnover | Location | Filed | ||||
|---|---|---|---|---|---|---|---|
| 10,333,600 | $26.9M | 0.9% | Core | Medium | San Francisco, CA | 2026-02-17 | |
| 3,443,659 | $9.0M | 2.8% | Yield | High | New York, NY | 2026-02-20 | |
| 3,322,488 | $8.6M | 0.2% | Growth | Medium | New York, NY | 2026-02-17 | |
| 1,586,174 | $4.1M | 0.3% | Value | Medium | Larkspur, CA | 2026-02-17 | |
| 1,287,829 | $3.3M | 2.8% | Yield | Very High | New Canaan, CT | 2026-02-17 | |
| 1,115,744 | $2.9M | 0.0% | GARP | High | London, United Kingdom | 2026-02-13 | |
| 981,360 | $2.6M | 0.0% | Core | High | New York, NY | 2026-02-12 | |
| 618,672 | $1.6K | 0.0% | GARP | Medium | Boston, MA | 2026-02-10 | |
| 333,694 | $867.6K | 0.0% | Value | High | New York, NY | 2026-02-17 | |
| 278,304 | $723.6K | 0.0% | Core | Very High | New York, NY | 2026-02-12 | |
| 266,601 | $693.2K | 0.2% | Yield | Very High | Westport, CT | 2026-02-13 | |
| 260,311 | $676.8K | 0.0% | Index | Very Low | Chicago, IL | 2026-02-17 | |
| 238,912 | $621.2K | 0.0% | Core | Very High | Miami, FL | 2026-02-17 | |
| 144,219 | $375.0K | 0.0% | Index | Very Low | New York, NY | 2026-02-12 | |
| 119,176 | $309.9K | 0.1% | N/A | N/A | Austin, TX | 2026-08-14 | |
| 118,375 | $307.8K | 0.2% | Agg Growth | Very High | Chicago, IL | 2026-02-17 | |
| 116,933 | $304.0K | 0.0% | Value | Very High | London, United Kingdom | 2026-02-17 | |
| 106,683 | $277.4K | 0.0% | Core | Very High | New York, NY | 2026-02-13 | |
| 104,919 | $272.8K | 0.0% | Core | Low | Toronto, Australia | 2026-02-12 | |
| 54,200 | $140.9K | 0.0% | Growth | High | New York, NY | 2026-02-17 | |
| 51,252 | $133.3K | 0.0% | Core | Very High | Stamford, CT | 2026-02-17 | |
| 42,301 | $109 | 0.0% | GARP | Very High | New York, NY | 2026-02-12 | |
| 40,000 | $104.0K | 0.0% | Yield | High | Charlottesville, VA | 2026-02-13 | |
| 35,000 | $91 | 0.0% | Growth | Very High | New York, NY | 2026-01-16 | |
| 32,959 | $85.7K | 0.0% | Core | Low | Stamford, CT | 2026-02-03 | |
| 15,488 | $40 | 0.0% | GARP | Very High | New York, NY | 2026-02-23 | |
| 14,485 | $37.7K | 0.0% | GARP | Very High | New York, NY | 2026-02-13 | |
| 13,627 | $35 | 0.0% | Value | High | London, United Kingdom | 2026-02-06 | |
| 13,548 | $35.2K | 0.0% | Value | Very High | Fort Lauderdale, FL | 2026-02-17 | |
| 12,276 | $31.9K | 0.0% | Yield | High | Boston, MA | 2026-02-17 | |
| 11,627 | $30.2K | 0.0% | Value | Very High | New York, NY | 2026-02-17 | |
| 10,737 | $27.9K | 0.0% | Core | Low | Charlotte, NC | 2026-02-17 | |
| 10,603 | $27.6K | 0.0% | ETF | Medium | New York, NY | 2026-02-12 | |
| 10,500 | $27.3K | 0.0% | Value | Medium | Toronto, Australia | 2026-02-10 | |
| 10,000 | $26.0K | 0.0% | Core | Low | St. Louis, MO | 2026-02-13 | |
| 2,259 | $5.9K | 0.0% | Value | Medium | Levis, Austria | 2026-02-12 | |
| 1,252 | $3.3K | 0.0% | Agg Growth | Low | Tokyo, Mexico | 2026-02-03 | |
| 1,250 | $3.3K | 0.0% | Core | Low | Toronto, Australia | 2026-01-27 | |
| 530 | $1.4K | 0.0% | Core | Medium | London, United Kingdom | 2026-02-13 | |
| 500 | $1.3K | 0.0% | ETF | Very Low | Annapolis, MD | 2026-02-11 | |
| 404 | $1.1K | 0.0% | Core | Low | New York, NY | 2026-05-27 | |
| 200 | $1.0K | 0.0% | Core | Low | Toronto, Australia | 2026-02-17 | |
| 100 | $260 | 0.0% | Index | Low | Des Peres, MO | 2026-02-17 | |
| 11 | $29 | 0.0% | Core | Low | Stamford, CT | 2026-02-12 | |
| 4 | $10 | 0.0% | Growth | Medium | New York, NY | 2026-02-11 | |
| 1 | $3 | 0.0% | Core | Medium | Paris, India | 2026-02-10 |