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Atara Biotherapeutics
ATRA
ATRA
37 hedge funds and large institutions have $12.4M invested in Atara Biotherapeutics in 2025 Q1 according to their latest regulatory filings, with 5 funds opening new positions, 8 increasing their positions, 13 reducing their positions, and 11 closing their positions.
New
Increased
Maintained
Reduced
Closed
5.51% less ownership
Funds ownership: 41.12% → 35.61% (-5.5%)
14% less funds holding
Funds holding: 43 → 37 (-6)
38% less repeat investments, than reductions
Existing positions increased: 8 | Existing positions reduced: 13
55% less first-time investments, than exits
New positions opened: 5 | Existing positions closed: 11
61% less capital invested
Capital invested by funds: $31.5M → $12.4M (-$19.1M)
Holders
37
Holders Change
-6
Holders Change %
-13.95%
% of All Funds
0.5%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
5
Increased
8
Reduced
13
Closed
11
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–
Top Buyers
Top Sellers
| 1 |
Citadel Advisors
Miami,
Florida
|
-$3.56M |
| 2 |
Renaissance Technologies
New York
|
-$434K |
| 3 |
Marshall Wace
London,
United Kingdom
|
-$332K |
| 4 |
VPC
Vestal Point Capital
New York
|
-$270K |
| 5 |
CSS
Cubist Systematic Strategies
Stamford,
Connecticut
|
-$169K |
