BioatlaBCAB
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 34 institutions reported holding Bioatla Inc. (BCAB) in their 13F filings, down 7 from Q4 2025. 5 opened new positions and 13 sold out. The largest holders were Acorn Capital Advisors, LLC ($865K), Millennium Management ($444K) and Vanguard Capital Management LLC ($266K). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Bioatla Inc.
- CUSIP
- 09077B104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 5 | $95K |
| Exits | 13 | $692K |
All 13F filers, Q4 2025 → Q1 2026: 4,039,730 shares bought and 1,831,603 shares sold, net +2,208,127 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 34 holders
| Acorn Capital Advisors, LLC | 0.25% | Add +11.8% | 5,406,345 | $865K |
| Millennium Management | 0.00% | Add +261.6% | 2,756,674 | $444K |
| Vanguard Capital Management LLC | 0.00% | — | 1,649,252 | $266K |
| Acadian Asset Management LLC | 0.00% | Add +62.9% | 1,233,919 | $198K |
| Geode Capital Management, LLC | 0.00% | Add +37.8% | 689,182 | $111K |
| Deutsche Bank AG | 0.00% | Reduce 0.0% | 525,352 | $84K |
| Renaissance Technologies | 0.00% | Reduce -27.8% | 510,514 | $82K |
| BlackRock, Inc. | 0.00% | Reduce 0.0% | 480,931 | $77K |
| Citadel Advisors | 0.00% | New | 435,675 | $70K |
| UBS Group AG | 0.00% | Add +66.4% | 375,569 | $60K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 273,427 | $44K |
| ADAR1 Capital Management, LLC | 0.00% | Add +24.6% | 228,107 | $37K |
| State Street Corp. | 0.00% | No change | 151,377 | $24K |
| Northern Trust Corp. | 0.00% | No change | 103,494 | $17K |
| Simplex Trading, LLC | 0.00% | Reduce -38.6% | 73,901 | $12K |
| Stonepine Capital Management, LLC | 0.01% | New | 65,387 | $11K |
| XTX Topco Ltd | 0.00% | Reduce -6.3% | 56,614 | $9K |
| Morgan Stanley | 0.00% | Add +27.0% | 55,426 | $9K |
| MAI Capital Management | 0.00% | No change | 51,504 | $8K |
| Kestra Advisory Services, LLC | 0.00% | New | 44,250 | $7K |
| Susquehanna International Group, LLP | 0.00% | Reduce -52.2% | 39,056 | $6K |
| StoneX Group Inc. | 0.00% | New | 29,466 | $5K |
| Commonwealth Equity Services, LLC | 0.00% | No change | 25,300 | $4K |
| Jane Street Group, LLC | 0.00% | Reduce -93.3% | 23,142 | $4K |
| Magnus Financial Group LLC | 0.00% | No change | 20,000 | $3K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +219.6% | 16,996 | $3K |
| Vanguard Global Advisers, LLC | 0.00% | — | 16,635 | $3K |
| Mariner, LLC | 0.00% | New | 16,000 | $3K |
| Torrey Growth & Income Advisors | 0.00% | No change | 15,687 | $2K |
| Twin Lakes Capital Management, LLC | 0.00% | Reduce -20.0% | 7,200 | $1K |
| Jones Financial Companies LLLP | 0.00% | No change | 2,000 | $306 |
| Osaic Holdings, Inc. | 0.00% | No change | 500 | $80 |
| BNP Paribas Financial Markets | 0.00% | No change | 472 | $76 |
| JPMorgan Chase & Co. | 0.00% | No change | 129 | $20 |
"% of holder's portfolio" is BCAB's weight in each manager's 13F, not the share of Bioatla Inc. the manager owns.