BCAB · BioAtla, Inc.

$3.09 -0.36 (-10.43%) At close · Aug 14

Market Cap

$5.15M

1.67M

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.

Quarter:

Holders: 21

Total Value: $1,221,268

Total Shares: 295,395

Institutional Ownership Trend

23 quarters

Holder Concentration

Across 21 13F filers · Δ vs Mar 31, 2026

Top Holder

36.7%

+2.4 pts

Top 5

76.7%

+2.3 pts

Top 10

95.4%

+6.1 pts

HHI

2,082

Moderately concentrated+357

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -15

Institutional value: -51.9%

Shares held: -98.1%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega MILLENNIUM MANAGEMENT LLC	+15,483	70,616
Small Stonepine Capital Management, LLC	+15,124	16,432
Mid Tower Research Capital LLC (TRC)	+523	863
Mega JPMORGAN CHASE & CO	+118	121
Mega DEUTSCHE BANK AG\	+49	10,556

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega VANGUARD CAPITAL MANAGEMENT LLC	−23,821	9,164
Large ACADIAN ASSET MANAGEMENT LLC	−10,384	14,294
Mega UBS Group AG	−1,310	6,201
Mega GEODE CAPITAL MANAGEMENT, LLC	−965	12,819
Mega VANGUARD FIDUCIARY TRUST CO	−739	4,730

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Large Lido Advisors, LLC	16,656	$68,955
Large HRT FINANCIAL LP	13,276	$54,962
Mega BARCLAYS PLC	101	$418
Large MERCER GLOBAL ADVISORS INC /ADV	2	$8
Micro Forum Finance Group S.A.	400	$1

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Large RENAISSANCE TECHNOLOGIES LLC	10,210	$82,192
Mega CITADEL ADVISORS LLC	9,472	$76,244
Large MARSHALL WACE, LLP	5,553	$44,697
Mid ADAR1 Capital Management, LLC	4,562	$36,725
Mega STATE STREET CORP	3,028	$24,371

Filter: New 5 Increased 6 Reduced 9 Sold out 20 Unchanged 1

Showing 21 of 21

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

ACORN CAPITAL ADVISORS, LLC

$447,641

36.65%

108,126

MILLENNIUM MANAGEMENT LLC

$292,350

23.94%

70,616

Lido Advisors, LLC

$68,955

5.65%

16,656

Stonepine Capital Management, LLC

$68,028

5.57%

16,432

ACADIAN ASSET MANAGEMENT LLC

$59,177

4.85%

14,294

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	14,294	$59,177	100.0%	Defined

HRT FINANCIAL LP

$54,962

4.50%

13,276

GEODE CAPITAL MANAGEMENT, LLC

$53,069

4.35%

12,819

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	677	$2,802	5.3%	Defined
Held directly	12,142	$50,267	94.7%	Defined

DEUTSCHE BANK AG\

$43,701

3.58%

10,556

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	10,556	$43,701	100.0%	Defined

BlackRock, Inc.

$39,810

3.26%

9,616

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Institutional Trust Company, N.A.	9,616	$39,810	100.0%	Sole

VANGUARD CAPITAL MANAGEMENT LLC

$37,938

3.11%

9,164

UBS Group AG

$25,672

2.10%

6,201

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	6,201	$25,672	100.0%	Defined

VANGUARD FIDUCIARY TRUST CO

$19,582

1.60%

4,730

MORGAN STANLEY

$4,586

0.38%

1,108

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY CAPITAL SERVICES, LLC	125	$517	11.3%	Defined
MORGAN STANLEY SMITH BARNEY LLC	983	$4,069	88.7%	Defined

Tower Research Capital LLC (TRC)

$3,572

0.29%

863

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	863	$3,572	100.0%	Defined

SBI Securities Co., Ltd.

$1,105

0.09%

267

JPMORGAN CHASE & CO

$500

0.04%

121

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities LLC	120	$496	99.2%	Defined
J.P. Morgan Securities plc	1	$4	0.8%	Defined

BARCLAYS PLC

$418

0.03%

101

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	101	$418	100.0%	Defined

JONES FINANCIAL COMPANIES LLLP

$165

0.01%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	40	$165	100.0%	Sole

BNP PARIBAS ARBITRAGE, SA

$28

0.00%

MERCER GLOBAL ADVISORS INC /ADV

0.00%

Forum Finance Group S.A.

0.00%

400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	427,858	$68,885	98.2%	Defined
Held directly	7,817	$1,258	1.8%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	277,630	$44,697	100.0%	Other

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SSGA FUNDS MANAGEMENT, INC. joint	151,377	$24,371	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	103,494	$16,662	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	70,200	$11,302	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	56,614	$9,114	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	39,056	$6,288	100.0%	Other

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	37,900	$6,101	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STONEX FINANCIAL INC.	29,466	$4,744	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	23,123	$3,722	99.9%	Defined
Jane Street Global Trading, LLC	19	$3	0.1%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	500	$80	100.0%	Defined

Key facts CIK 1826892 CUSIP 09077B203 13F (30d) 21 filings 21 filers Visit website Investor relations