CUSIP: 92941V308 | NYSE | Healthcare · Biotechnology | Micro Cap | 89 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 |
|---|---|---|---|---|---|
| 13G/AZhang Xiaofan | — | — | Newly reported | Jul 13, 2026 | No 13F filer matched |
| Style | Turnover | Location | Filed | ||||
|---|---|---|---|---|---|---|---|
| 2,950,000 | $1.9M | 0.1% | Value | High | Austin, TX | 2026-08-14 | |
| 2,000,000 | $1.3M | 0.0% | Yield | Medium | New Canaan, CT | 2026-08-19 | |
| 1,628,700 | $1.1M | 0.1% | Value | Medium | Dorado, PR | 2026-08-13 | |
| 1,456,651 | $947.8K | 0.1% | GARP | Very High | New York, NY | 2026-08-14 | |
| 1,000,000 | $650.7K | 0.1% | N/A | N/A | Austin, TX | 2026-10-08 | |
| 945,000 | $614.9K | 0.7% | Core | Very High | New York, NY | 2026-07-27 | |
| 916,077 | $596.1K | 0.0% | Core | High | Stamford, CT | 2026-08-14 | |
| 500,551 | $325.7K | 0.2% | Value | Medium | San Francisco, CA | 2026-08-13 | |
| 468,457 | $304.8K | 0.0% | Core | Very High | Miami, FL | 2026-09-02 | |
| 438,818 | $285.5K | 0.0% | Value | High | New York, NY | 2026-08-14 | |
| 381,797 | $248.0K | 0.0% | GARP | Medium | Boston, MA | 2026-08-13 | |
| 264,912 | $172.4K | 0.0% | Deep Value | Very High | Dallas, TX | 2026-08-14 | |
| 264,557 | $172.2K | 0.0% | Core | N/A | Malvern, PA | 2026-08-13 | |
| 258,203 | $168.0K | 0.0% | Index | Very Low | Boston, MA | 2026-08-12 | |
| 183,443 | $119.4K | 0.0% | Core | N/A | Malvern, PA | 2026-08-13 | |
| 118,957 | $77.4K | 0.0% | Growth | High | Bala Cynwyd, PA | 2026-08-14 | |
| 113,064 | $73.6K | 0.1% | Yield | Very High | New Canaan, CT | 2026-08-14 | |
| 78,721 | $51.2K | 0.0% | Value | Very High | London, United Kingdom | 2026-08-14 | |
| 71,533 | $47.0K | 0.0% | Deep Value | Very High | London, United Kingdom | 2026-08-06 | |
| 61,269 | $39.9K | 0.0% | Core | Very High | New York, NY | 2026-08-14 | |
| 58,597 | $38.1K | 0.0% | Core | Medium | Zurich, Switzerland | 2026-08-13 | |
| 44,405 | $28.9K | 0.0% | Index | Very Low | New York, NY | 2026-08-07 | |
| 43,677 | $28.4K | 0.0% | Index | Very Low | Chicago, IL | 2026-08-13 | |
| 40,974 | $26.7K | 0.0% | Core | Very High | New York, NY | 2026-08-14 | |
| 40,697 | $26.5K | 0.0% | Value | Very High | New York, NY | 2026-08-14 | |
| 35,000 | $22 | 0.0% | Growth | Very High | New York, NY | 2026-07-08 | |
| 23,300 | $15.2K | 0.0% | Core | High | New York, NY | 2026-08-13 | |
| 18,298 | $11.9K | 0.0% | ETF | Low | Waltham, MA | 2026-07-29 | |
| 15,765 | $10.3K | 0.0% | Index | Very Low | Boston, MA | 2026-09-22 | |
Anson Funds Management LPActivist | 14,455 | $9.4K | 0.0% | GARP | Very High | Dallas, TX | 2026-08-13 |
| 12,994 | $8.5K | 0.0% | GARP | Very High | New York, NY | 2026-08-11 | |
| 11,059 | $7.2K | 0.0% | Core | High | Oakbrook Terrace, IL | 2026-08-14 | |
| 1,425 | $926 | 0.0% | Growth | Low | New York, NY | 2026-08-14 | |
| 1,041 | $677 | 0.0% | ETF | Very Low | Center Valley, PA | 2026-07-22 | |
| 561 | $365 | 0.0% | GARP | Medium | New York, NY | 2026-08-10 | |
| 350 | $0 | 0.0% | ETF | Very Low | Needham, MA | 2026-08-05 | |
| 141 | $92 | 0.0% | Core | Medium | London, United Kingdom | 2026-08-14 | |
| 65 | $42 | 0.0% | Core | Low | San Francisco, CA | 2026-08-14 | |
| 43 | $28 | 0.0% | Core | Low | New York, NY | 2026-08-13 | |
| 25 | $16 | 0.0% | GARP | Low | Sarasota, FL | 2026-08-12 | |
| 15 | $0 | 0.0% | Core | Low | Toronto, Australia | 2026-08-14 | |
| 10 | $7 | 0.0% | Agg Growth | Medium | Boca Raton, FL | 2026-08-14 | |
| 8 | $5 | 0.0% | Growth | Medium | New York, NY | 2026-08-12 | |
| 2 | $1 | 0.0% | Growth | Low | St Louis, MO | 2026-08-14 | |
| 1 | $1 | 0.0% | ETF | Low | Wakefield, MA | 2026-07-27 | |
| 1 | $1 | 0.0% | Core | Low | Stamford, CT | 2026-08-13 |