CUSIP: 86150R107 | NYSE | Healthcare · Biotechnology | Small Cap | 412 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/AFMR LLC | 4,820,462 | 7.5% | −492,638 | Sep 30, 2026 | 92d ahead of 13F (5,313,100 sh) · −492,638 |
| 13GBVF Inc with BVF GP Holdings LLC, BVF I GP LLC, Biotechnology Value Fund L P, +4 more | 3,608,968 | 5.6% | New 5%+ stake | Sep 23, 2026 | No 13F filer matched |
| 13G/ALynx1 Capital Management LP | 4,038,404 | 6.5% | New 5%+ stake | Jun 30, 2026 | No 13F filer matched |
| 13G/AThe Toronto-Dominion Bank with TD Securities Inc. | 3,173,258 | 4.9% | Newly reported | Jun 30, 2026 | No 13F filer matched |
| Style | Turnover | Location | Filed | ||||
|---|---|---|---|---|---|---|---|
| 1,180,782 | $30.7M | 0.0% | Growth | High | Senningerberg, Netherlands | 2026-10-15 | |
| 924,342 | $24.0M | 0.0% | Index | Low | Austin, TX | 2026-11-04 | |
| 471,015 | $12.3M | 0.1% | Growth | Medium | Strassen, Netherlands | 2026-11-03 | |
| 85,483 | $2.2M | 0.0% | Yield | Low | Denver, CO | 2026-11-03 | |
| 60,071 | $1.6M | 0.1% | ETF | Very Low | Winona Lake, IN | 2026-10-26 | |
| 44,316 | $1.2M | 0.0% | Index | Very Low | Overland Park, KS | 2026-11-02 | |
| 44,296 | $1.2M | 0.0% | Core | Medium | Naples, FL | 2026-10-22 | |
| 28,395 | $738.3K | 0.0% | Core | Medium | New York, NY | 2026-11-04 | |
| 21,696 | $564.1K | 0.0% | Growth | Medium | New York, NY | 2026-10-16 | |
| 20,373 | $529.7K | 0.0% | Growth | Low | Bethesda, MD | 2026-10-29 | |
| 18,309 | $476 | 0.0% | Value | High | Chicago, IL | 2026-10-22 | |
| 13,054 | $337.8K | 0.0% | Growth | Medium | Shanghai, France | 2026-10-28 | |
| 12,571 | $326.8K | 0.0% | Core | Low | Trenton, NJ | 2026-11-05 | |
| 11,530 | $299.8K | 0.1% | Growth | Medium | Ljubljana, Andorra | 2026-10-19 | |
| 10,968 | $285.2K | 0.0% | Index | Very Low | Phoenix, AZ | 2026-11-03 | |
| 9,150 | $237.9K | 0.2% | Momentum | Medium | Forest, VA | 2026-10-28 | |
| 9,150 | $237.9K | 0.0% | Growth | Low | Bethesda, MD | 2026-10-29 | |
| 9,000 | $234.0K | 0.2% | ETF | Medium | Las Vegas, NV | 2026-10-21 | |
| 8,624 | $224.2K | 0.0% | Core | Low | Des Moines, IA | 2026-11-02 | |
| 4,839 | $125.8K | 0.0% | Growth | Very High | Hong Kong, South Korea | 2026-10-29 | |
| 3,297 | $85.7K | 0.0% | Growth | Low | Seoul, Malaysia | 2026-11-03 | |
| 2,656 | $69.1K | 0.0% | Index | Very Low | St. Louis, MO | 2026-10-20 | |
| 2,185 | $56.8K | 0.0% | Value | High | Cheyenne, WY | 2026-10-28 | |
| 1,833 | $47.7K | 0.0% | GARP | Medium | Charlotte, NC | 2026-10-22 | |
| 1,773 | $46.1K | 0.0% | GARP | Low | Phoenix, AZ | 2026-10-02 | |
| 1,596 | $41.5K | 0.0% | Agg Growth | Medium | Guangzhou, France | 2026-10-26 | |
| 1,223 | $31.8K | 0.0% | Deep Value | Very High | London, United Kingdom | 2026-11-03 | |
| 1,183 | $30.8K | 0.0% | Core | Very High | Chicago, IL | 2026-11-04 | |
| 1,096 | $28 | 0.0% | Core | Medium | Brussels, Czech Republic | 2026-10-22 | |
| 1,047 | $27.2K | 0.0% | Index | Very Low | Foster City, CA | 2026-10-08 | |
| 690 | $17.9K | 0.0% | ETF | Low | New York, NY | 2026-11-03 | |
| 400 | $10.4K | 0.0% | Core | Low | Wilmington, DE | 2026-10-23 | |
| 150 | $3.9K | 0.0% | Index | Low | Greenwood Village, CO | 2026-10-20 | |
| 129 | $3.4K | 0.0% | Growth | Low | St Louis, MO | 2026-11-05 | |
| 85 | $2.2K | 0.0% | ETF | Low | Waltham, MA | 2026-10-16 | |
| 83 | $2.2K | 0.0% | Index | Low | Atlanta, GA | 2026-10-23 | |
| 70 | $1.8K | 0.0% | Core | Medium | Birmingham, AL | 2026-11-04 | |
| 65 | $1.7K | 0.0% | Core | Very Low | Saint Louis, MO | 2026-10-27 | |
| 20 | $520 | 0.0% | Core | Medium | Boston, MA | 2026-10-21 | |
| 17 | $442 | 0.0% | Index | Low | San Francisco, CA | 2026-10-08 | |
| 14 | $364 | 0.0% | Agg Growth | Low | Tokyo, Mexico | 2026-10-22 | |
| 10 | $0 | 0.0% | Value | High | London, United Kingdom | 2026-10-30 | |
| 7 | $182 | 0.0% | ETF | Medium | Encinitas, CA | 2026-10-21 | |
| 5 | $130 | 0.0% | Growth | Low | Tampa, FL | 2026-10-16 | |
| 4 | $104 | 0.0% | ETF | Medium | Akron, OH | 2026-10-13 | |
| 2 | $52 | 0.0% | ETF | Very Low | Sylvania, OH | 2026-10-26 |