CUSIP: 032724106 | NYSE | Healthcare · Biotechnology | Small Cap | 568 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/ASirenia Capital Management LP | 1,491,959 | 5.0% | New 5%+ stake | Jun 30, 2026 | No 13F filer matched |
| Style | Turnover | Location | Filed | ||||
|---|---|---|---|---|---|---|---|
| 821,917 | $41.3M | 6.6% | Deep Value | Very Low | Paris, India | 2026-11-05 | |
| 198,008 | $10.0M | 0.0% | Index | Low | Austin, TX | 2026-11-04 | |
| 186,688 | $9.4M | 0.0% | Core | Medium | Toronto Ontario, Australia | 2026-11-02 | |
| 101,767 | $5.1M | 0.0% | Core | Low | Des Moines, IA | 2026-11-02 | |
| 81,688 | $4.1M | 0.8% | Value | High | Marblehead, MA | 2026-10-27 | |
| 81,102 | $4.1M | 0.0% | Core | Medium | New York, NY | 2026-11-04 | |
| 68,154 | $3.4M | 0.1% | GARP | Medium | Reston, VA | 2026-10-15 | |
| 63,000 | $3.2M | 0.7% | Yield | Very High | Ellicott City, MD | 2026-11-02 | |
| 56,869 | $2.9M | 0.0% | Core | Low | New York, NY | 2026-11-05 | |
| 33,414 | $1.7M | 0.1% | Growth | Medium | New York, NY | 2026-10-16 | |
| 19,350 | $972.5K | 0.1% | Core | Low | Stamford, CT | 2026-11-05 | |
| 18,676 | $938.7K | 0.0% | Index | Very Low | Overland Park, KS | 2026-11-02 | |
| 17,650 | $887.1K | 0.0% | Core | Medium | Richmond, VA | 2026-10-28 | |
| 17,370 | $899 | 0.0% | Core | Low | Frankfurt, Hong Kong | 2026-10-27 | |
| 16,953 | $852.1K | 0.0% | Core | Medium | Rotterdam, Philippines | 2026-10-20 | |
| 11,614 | $583.7K | 0.1% | Growth | Medium | Mount Pleasant, SC | 2026-11-04 | |
| 10,033 | $504.3K | 0.0% | Index | Low | San Francisco, CA | 2026-10-08 | |
| 9,815 | $493.3K | 0.0% | Growth | Low | Bethesda, MD | 2026-10-29 | |
| 9,285 | $466.7K | 0.0% | Value | High | Philadelphia, PA | 2026-11-04 | |
| 5,737 | $288.3K | 0.0% | Core | Low | Trenton, NJ | 2026-11-05 | |
| 5,669 | $284.9K | 0.0% | Growth | Medium | Clearwater, FL | 2026-10-26 | |
| 5,476 | $275.2K | 0.0% | Growth | Very High | Hong Kong, South Korea | 2026-10-29 | |
| 5,441 | $273.5K | 0.0% | Core | Low | Virginia Beach, VA | 2026-10-30 | |
| 5,402 | $272.1K | 0.0% | Growth | Medium | Shanghai, France | 2026-10-28 | |
| 5,003 | $251.5K | 0.0% | Index | Very Low | Phoenix, AZ | 2026-11-03 | |
| 4,144 | $208.3K | 0.0% | Core | Low | Zurich, Switzerland | 2026-11-03 | |
| 4,034 | $202.7K | 0.0% | Core | Low | Grand Island, NE | 2026-10-27 | |
| 3,750 | $188.5K | 0.0% | ETF | Very Low | Sugar Land, TX | 2026-10-21 | |
| 3,166 | $159.1K | 0.0% | Index | Low | Minneapolis, MN | 2026-11-05 | |
| 1,701 | $85.0K | 0.0% | Core | Very Low | Juneau, AK | 2026-10-15 | |
| 1,599 | $80.4K | 0.0% | Growth | Low | St Louis, MO | 2026-11-05 | |
| 1,513 | $76.0K | 0.0% | Growth | Low | Seoul, Malaysia | 2026-11-03 | |
| 1,200 | $60.3K | 0.0% | Growth | Medium | Mclean, VA | 2026-10-30 | |
| 773 | $38.9K | 0.0% | Agg Growth | Medium | Guangzhou, France | 2026-10-26 | |
| 654 | $32.9K | 0.0% | GARP | Medium | Charlotte, NC | 2026-10-22 | |
| 574 | $28.8K | 0.0% | Index | Very Low | Foster City, CA | 2026-10-08 | |
| 554 | $27.8K | 0.0% | Core | Very High | Chicago, IL | 2026-11-04 | |
| 454 | $22.8K | 0.0% | GARP | Low | Phoenix, AZ | 2026-10-02 | |
| 411 | $20.7K | 0.0% | Index | Very Low | St. Louis, MO | 2026-10-20 | |
| 352 | $17.7K | 0.0% | Index | Low | Atlanta, GA | 2026-10-23 | |
| 334 | $16.8K | 0.0% | GARP | Low | Mansfield, OH | 2026-10-27 | |
| 208 | $10.5K | 0.0% | Core | Medium | Orchard Park, NY | 2026-11-05 | |
| 178 | $8.9K | 0.0% | Core | Very High | New York, NY | 2026-11-05 | |
| 85 | $4.3K | 0.0% | ETF | Medium | Midvale, UT | 2026-10-20 | |
| 72 | $3.6K | 0.0% | Core | Medium | Birmingham, AL | 2026-11-04 | |
| 42 | $2.1K | 0.0% | ETF | Low | Concord, CA | 2026-10-21 | |
| 42 | $2.1K | 0.0% | Index | Low | San Francisco, CA | 2026-11-03 | |
| 35 | $1.8K | 0.0% | Core | Very Low | Saint Louis, MO | 2026-10-27 | |
| 19 | $955 | 0.0% | ETF | Low | Brentwood, TN | 2026-10-15 | |
| 19 | $955 | 0.0% | ETF | Low | Fort Lauderdale, FL | 2026-10-30 | |
| 17 | $854 | 0.0% | Value | Medium | Rancho Santa Fe, CA | 2026-10-14 | |
| 16 | $804 | 0.0% | Index | Very Low | Cincinnati, OH | 2026-11-05 | |
| 15 | $754 | 0.0% | ETF | Very Low | Sylvania, OH | 2026-10-26 | |
| 12 | $603 | 0.0% | Core | Low | Springfield, MA | 2026-10-05 | |
| 8 | $402 | 0.0% | ETF | Medium | Encinitas, CA | 2026-10-21 | |
| 5 | $0 | 0.0% | Value | High | London, United Kingdom | 2026-10-30 | |
| 4 | $202 | 0.0% | ETF | Medium | Akron, OH | 2026-10-13 | |
| 2 | $97 | 0.0% | ETF | Low | Herndon, VA | 2026-10-30 | |
| 1 | $50 | 0.0% | Growth | Low | Tampa, FL | 2026-10-16 | |
| 1 | $51 | 0.0% | ETF | Very Low | Boston, MA | 2026-10-26 |