45 institutions reported holding $2.5M of BIOATLA INC (BCAB) in SEC 13F filings for 2026-03-31. Largest institutional holders: ACORN CAPITAL ADVISORS, LLC ($865,015), MILLENNIUM MANAGEMENT LLC ($443,825), VANGUARD CAPITAL MANAGEMENT LLC ($265,530), ACADIAN ASSET MANAGEMENT LLC ($198,000), GEODE CAPITAL MANAGEMENT, LLC ($110,976). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | ACORN CAPITAL ADVISORS, LLC | $865,015 | 5.4M | Added |
| 2 | MILLENNIUM MANAGEMENT LLC | $443,825 | 2.8M | Added |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $265,530 | 1.6M | New |
| 4 | ACADIAN ASSET MANAGEMENT LLC | $198,000 | 1.2M | Added |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | $110,976 | 689,182 | Added |
| 6 | DEUTSCHE BANK AG\ | $84,056 | 525,352 | Trimmed |
| 7 | RENAISSANCE TECHNOLOGIES LLC | $82,193 | 510,514 | Trimmed |
| 8 | BlackRock, Inc. | $77,430 | 480,931 | Trimmed |
| 9 | CITADEL ADVISORS LLC | $76,246 | 473,575 | Added |
| 10 | UBS Group AG | $60,466 | 375,569 | Added |
| 11 | MARSHALL WACE, LLP | $44,421 | 277,630 | Trimmed |
| 12 | VANGUARD FIDUCIARY TRUST CO | $44,022 | 273,427 | New |
| 13 | ADAR1 Capital Management, LLC | $36,725 | 228,107 | Added |
| 14 | STATE STREET CORP | $24,372 | 151,377 | Hold |
| 15 | NORTHERN TRUST CORP | $16,663 | 103,494 | Hold |
| 16 | JANE STREET GROUP, LLC | $15,028 | 93,342 | Trimmed |
| 17 | SIMPLEX TRADING, LLC | $12,074 | 75,001 | Trimmed |
| 18 | Stonepine Capital Management, LLC | $10,527 | 65,387 | New |
| 19 | XTX Topco Ltd | $9,115 | 56,614 | Trimmed |
| 20 | MORGAN STANLEY | $8,923 | 55,426 | Added |
| 21 | MAI Capital Management | $8,293 | 51,504 | Hold |
| 22 | Kestra Advisory Services, LLC | $7,124 | 44,250 | New |
| 23 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $6,288 | 39,056 | Trimmed |
| 24 | StoneX Group Inc. | $4,744 | 29,466 | New |
| 25 | COMMONWEALTH EQUITY SERVICES, LLC | $4,070 | 25,300 | Hold |
Source: SEC Form 13F filings · as of 2026-03-31