BCAB
BioAtla, Inc.Company with tickers: BCAB
CIK
1826892
CUSIP
09077B104
Shares Outstanding
1,659,554
Website
https://www.bioatla.com
13F Activity (30d)
4 filings
3 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 34
Total Value: $2,493,484
Total Shares: 15,487,583
Institutional Ownership Trend
24 quarters
Holder Concentration
Across 34 13F filers · Δ vs Dec 31, 2025Top Holder
34.9%
−1.7 pts
Top 5
75.8%
+6.1 pts
Top 10
91.0%
+1.9 pts
HHI
1,787
Moderately concentrated+25
Quarterly Activity
vs Dec 31, 2025
New
7
Increased
9
Decreased
8
Sold Out
15
Unchanged
10
Holder count:
-8
Institutional value:
-66.7%
Shares held:
+17.4%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega MILLENNIUM MANAGEMENT LLC | +1,994,280 | 2,756,674 | |
| Small ACORN CAPITAL ADVISORS, LLC | +571,234 | 5,406,345 | |
| Large ACADIAN ASSET MANAGEMENT LLC | +476,248 | 1,233,919 | |
| Mega CITADEL ADVISORS LLC | +462,275 | 473,575 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +188,854 | 689,182 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega JANE STREET GROUP, LLC | −253,432 | 93,342 | |
| Large RENAISSANCE TECHNOLOGIES LLC | −196,700 | 510,514 | |
| Mid SIMPLEX TRADING, LLC | −46,490 | 73,901 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | −42,631 | 39,056 | |
| Mid XTX Topco Ltd | −3,781 | 56,614 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 1,649,252 | $265,529 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 273,427 | $44,021 | |
| Small Stonepine Capital Management, LLC | 65,387 | $10,527 | |
| Large Kestra Advisory Services, LLC | 44,250 | $7,124 | |
| Small StoneX Group Inc. | 29,466 | $4,744 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 1,945,795 | $1,105,210 | |
| Large MARSHALL WACE, LLP | 891,580 | $506,417 | |
| Mega TWO SIGMA INVESTMENTS, LP | 81,330 | $46,195 | |
| Small PVG ASSET MANAGEMENT CORP | 69,000 | $39,192 | |
| Mid Virtu Financial LLC | 55,460 | $31,501 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Small ACORN CAPITAL ADVISORS, LLC | $870,421 | 34.91% | 5,406,345 | Shares | Sole | 2026-05-15 | ||||
| Mega MILLENNIUM MANAGEMENT LLC | $443,824 | 17.80% | 2,756,674 | Shares | Sole | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $265,529 | 10.65% | 1,649,252 | Shares | Defined | 2026-05-15 | ||||
| Large ACADIAN ASSET MANAGEMENT LLC | $198,660 | 7.97% | 1,233,919 | Shares | Defined | 2026-05-13 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $110,958 | 4.45% | 689,182 | Shares | Defined | 2026-05-15 | ||||
| Mega DEUTSCHE BANK AG\ Bank | $84,581 | 3.39% | 525,352 | Shares | Defined | 2026-05-06 | ||||
| Large RENAISSANCE TECHNOLOGIES LLC | $82,192 | 3.30% | 510,514 | Shares | Sole | 2026-05-14 | ||||
| Mega BlackRock, Inc. | $77,429 | 3.11% | 480,931 | Shares | Sole | 2026-05-13 | ||||
| Mega CITADEL ADVISORS LLC | $70,143 | 2.81% | 435,675 | Shares | Defined | 2026-05-15 | ||||
| Mega UBS Group AG | $60,466 | 2.42% | 375,569 | Shares | Defined | 2026-05-05 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $44,021 | 1.77% | 273,427 | Shares | Defined | 2026-05-08 | ||||
| Mid ADAR1 Capital Management, LLC | $36,725 | 1.47% | 228,107 | Shares | Sole | 2026-05-18 | ||||
| Mega STATE STREET CORP | $24,371 | 0.98% | 151,377 | Shares | Defined | 2026-05-15 | ||||
| Mega NORTHERN TRUST CORP Bank | $16,662 | 0.67% | 103,494 | Shares | Defined | 2026-05-14 | ||||
| Mid SIMPLEX TRADING, LLC | $11,898 | 0.48% | 73,901 | Shares | Sole | 2026-05-14 | ||||
| Mega JANE STREET GROUP, LLC | $11,302 | 0.45% | 70,200 | Call | Defined | 2026-05-12 | ||||
| Small Stonepine Capital Management, LLC | $10,527 | 0.42% | 65,387 | Shares | Sole | 2026-05-14 | ||||
| Mid XTX Topco Ltd | $9,114 | 0.37% | 56,614 | Shares | Defined | 2026-05-15 | ||||
| Mega MORGAN STANLEY | $8,923 | 0.36% | 55,426 | Shares | Defined | 2026-05-15 | ||||
| Mid MAI Capital Management | $8,292 | 0.33% | 51,504 | Shares | Sole | 2026-05-15 | ||||
| Large Kestra Advisory Services, LLC | $7,124 | 0.29% | 44,250 | Shares | Sole | 2026-04-30 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $6,288 | 0.25% | 39,056 | Shares | Other | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $6,101 | 0.24% | 37,900 | Call | Defined | 2026-05-15 | ||||
| Small StoneX Group Inc. | $4,744 | 0.19% | 29,466 | Shares | Defined | 2026-05-14 | ||||
| Large COMMONWEALTH EQUITY SERVICES, LLC | $4,073 | 0.16% | 25,300 | Shares | Sole | 2026-04-27 | ||||
| Mega JANE STREET GROUP, LLC | $3,725 | 0.15% | 23,142 | Shares | Defined | 2026-05-12 | ||||
| Small Magnus Financial Group LLC | $3,220 | 0.13% | 20,000 | Shares | Sole | 2026-04-10 | ||||
| Mid Tower Research Capital LLC (TRC) | $2,736 | 0.11% | 16,996 | Shares | Defined | 2026-05-15 | ||||
| Mega Vanguard Global Advisers, LLC | $2,678 | 0.11% | 16,635 | Shares | Defined | 2026-05-08 | ||||
| Large Mariner, LLC | $2,576 | 0.10% | 16,000 | Shares | Sole | 2026-05-13 | ||||
| Small Torrey Growth & Income Advisors | $2,525 | 0.10% | 15,687 | Shares | Sole | 2026-04-21 | ||||
| Small Twin Lakes Capital Management, LLC | $1,159 | 0.05% | 7,200 | Shares | Sole | 2026-05-18 | ||||
| Large JONES FINANCIAL COMPANIES LLLP | $322 | 0.01% | 2,000 | Shares | Sole | 2026-05-15 | ||||
| Large OSAIC HOLDINGS, INC. | $80 | 0.00% | 500 | Shares | Defined | 2026-05-15 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $75 | 0.00% | 472 | Shares | Defined | 2026-05-12 | ||||
| Mega JPMORGAN CHASE & CO | $20 | 0.00% | 129 | Shares | Defined | 2026-05-13 | ||||
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