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.
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)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$467K |
| 2 |
ACA
Acorn Capital Advisors
New York
|
+$134K |
| 3 |
Acadian Asset Management
Boston,
Massachusetts
|
+$111K |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$102K |
| 5 |
Geode Capital Management
Boston,
Massachusetts
|
+$44.2K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Marshall Wace
London,
United Kingdom
|
-$144K |
| 2 |
Jane Street
New York
|
-$75.7K |
| 3 |
Two Sigma Investments
New York
|
-$46.2K |
| 4 |
Renaissance Technologies
New York
|
-$46K |
| 5 |
PAM
PVG Asset Management
Golden,
Colorado
|
-$39.2K |
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.