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BioAtla
BCAB

36 hedge funds and large institutions have $2.52M invested in BioAtla in 2026 Q1 according to their latest regulatory filings, with 8 funds opening new positions, 9 increasing their positions, 7 reducing their positions, and 10 closing their positions.

New
Increased
Maintained
Reduced
Closed

29% more repeat investments, than reductions

Existing positions increased: 9 | Existing positions reduced: 7

0.02% less ownership

Funds ownership: 0.45% → 0.42% (-0.02%)

12% less funds holding

Funds holding: 41 → 36 (-5)

20% less first-time investments, than exits

New positions opened: 8 | Existing positions closed: 10

66% less capital invested

Capital invested by funds: $7.49M → $2.52M (-$4.98M)

Holders
36
Holders Change
-5
Holders Change %
-12.2%
% of All Funds
0.44%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
8
Increased
9
Reduced
7
Closed
10
Calls
$18K
Puts
–
Net Calls
+$18K
Net Calls Change
+$11K

Top Buyers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
+$467K
2
ACA
Acorn Capital Advisors
New York
+$134K
3
Acadian Asset Management
Acadian Asset Management
Massachusetts
+$111K
4
Citadel Advisors
Citadel Advisors
Florida
+$102K
5
Geode Capital Management
Geode Capital Management
Massachusetts
+$44.2K

Top Sellers

Rank Fund Capital Flow
1
Marshall Wace
Marshall Wace
United Kingdom
-$144K
2
Jane Street
Jane Street
New York
-$75.7K
3
Two Sigma Investments
Two Sigma Investments
New York
-$46.2K
4
Renaissance Technologies
Renaissance Technologies
New York
-$46K
5
PAM
PVG Asset Management
Colorado
-$39.2K
Name Holding Trade Value Shares
Change 		Change in
Stake
MFG
26
Magnus Financial Group
New York
$3.22K – – –
TRCT
27
Tower Research Capital (TRC)
New York
$2.74K +$2.74K +234 +221%
VGA
28
Vanguard Global Advisers
Pennsylvania
$2.68K +$3.9K +333 New
Mariner
29
Mariner
Kansas
$2.58K +$3.75K +320 New
TGIA
30
Torrey Growth & Income Advisors
California
$2.36K – – –
SS
31
SBI Securities
Japan
$1.79K +$538 +46 +26%
TLCM
32
Twin Lakes Capital Management
California
$1.16K -$421 -36 -20%
Jones Financial Companies
33
Jones Financial Companies
Missouri
$306 – – –
Osaic Holdings
34
Osaic Holdings
Arizona
$80 – – –
BNP Paribas Financial Markets
35
BNP Paribas Financial Markets
France
$76 – – –
JP Morgan Chase
36
JP Morgan Chase
New York
$20 – – –
Two Sigma Investments
37
Two Sigma Investments
New York
– -$46.2K -1,627 Closed
PAM
38
PVG Asset Management
Colorado
– -$39.2K -1,380 Closed
VF
39
Virtu Financial
New York
– -$31K -1,109 Closed
HF
40
HRT Financial
New York
– -$31K -1,095 Closed
CAP
41
Columbia Advisory Partners
Washington
– -$14.8K -521 Closed
GWSA
42
Global Wealth Strategies & Associates
Colorado
– -$7.82K -275 Closed
HighTower Advisors
43
HighTower Advisors
Illinois
– -$7.38K -260 Closed
AIM
44
Arcadia Investment Management
Michigan
– -$797 -28 Closed
Bank of America
45
Bank of America
North Carolina
– -$245 -9 Closed
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BCAB Hedge Fund Activity: Q1 2026 in Review

36 of the 8,128 institutional investors tracked by Wall St. Rank reported a position in BioAtla (BCAB) for Q1 2026, worth a combined $2.52M — down 66% from $7.49M a quarter earlier.

Sellers outnumbered buyers: 10 funds closed out of BCAB and 8 opened new positions — a net loss of 2 holders — while 7 trimmed existing stakes and 9 added.

The largest buyer was Millennium Management, adding an estimated $467K. The largest seller was Marshall Wace, cutting an estimated $144K.

  • 36 institutional investors held BioAtla (BCAB) as of Q1 2026, down from 41 in Q4 2025.
  • Funds reported $2.52M of BioAtla stock for Q1 2026, down 66% quarter-over-quarter.
  • 8 funds opened new BioAtla positions in Q1 2026 and 10 closed out, a net change of -2 holders.
  • The largest BioAtla buyer in Q1 2026 was Millennium Management, an estimated $467K added.
  • The largest BioAtla seller in Q1 2026 was Marshall Wace, an estimated $144K sold.

Based on aggregated 13F filings for Q1 2026.