BCAB — BioAtla, Inc.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2020-12-16.
Performance
Technicals
Others in Healthcare
Measured signals that fired on BCAB
| date | signal | measured base rate |
|---|---|---|
| 2026-03-04 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-05-31 | SHORT JAY M PHD Chief Executive Officer | Shares withheld for tax | 259 | 3.93 | 1.0K |
| 2026-05-31 | Sievers Eric Chief Medical Officer | Shares withheld for tax | 134 | 3.93 | 527 |
| 2026-05-31 | Vasquez Christian Chief Financial Officer | Shares withheld for tax | 82 | 3.93 | 322 |
| 2026-03-12 | SHORT JAY M PHD Chief Executive Officer | Shares withheld for tax | 639 | 0.17 | 107 |
| 2026-03-11 | Sievers Eric Chief Medical Officer | Shares withheld for tax | 360 | 0.17 | 61 |
| 2026-03-11 | Vasquez Christian Chief Financial Officer | Shares withheld for tax | 175 | 0.17 | 30 |
| 2026-03-11 | SHORT JAY M PHD Chief Executive Officer | Grant or award | 430.0K | 0.00 | 0 |
| 2026-03-10 | Vasquez Christian Chief Financial Officer | Grant or award | 240.0K | 0.00 | 0 |
| 2026-03-10 | Sievers Eric Chief Medical Officer | Grant or award | 240.0K | 0.00 | 0 |
| 2026-02-28 | SHORT JAY M PHD Chief Executive Officer | Shares withheld for tax | 7.7K | 0.25 | 1.9K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| ACORN CAPITAL ADVISORS, LLC | 865.0K | 5.4M |
| MILLENNIUM MANAGEMENT LLC | 443.8K | 2.8M |
| VANGUARD CAPITAL MANAGEMENT LLC | 265.5K | 1.6M |
| GEODE CAPITAL MANAGEMENT, LLC | 111.0K | 689.2K |
| DEUTSCHE BANK AG\ | 84.1K | 525.4K |
| RENAISSANCE TECHNOLOGIES LLC | 82.2K | 510.5K |
| BlackRock, Inc. | 77.4K | 480.9K |
| CITADEL ADVISORS LLC | 70.1K | 435.7K |
| UBS Group AG | 60.5K | 375.6K |
| MARSHALL WACE, LLP | 44.4K | 277.6K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 10-Q | 2026-08-13 | 2026-06-30 | on EDGAR ↗ |
| 8-K | 2026-07-16 | 2026-07-16 | on EDGAR ↗ |
| 4 | 2026-06-05 | 2026-03-11 | on EDGAR ↗ |
| 4 | 2026-06-05 | 2026-03-12 | on EDGAR ↗ |
| 4 | 2026-06-05 | 2026-03-11 | on EDGAR ↗ |
| ARS | 2026-06-03 | 2025-12-31 | on EDGAR ↗ |
| DEFA14A | 2026-06-03 | — | on EDGAR ↗ |
| DEF 14A | 2026-06-03 | 2026-06-03 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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