Institutional Ownership
Atara Biotherapeutics Inc
CUSIP 046513206COM NEWATRAQ1 2026
Institutional Holders
30
13F filers
Shares Held
2.31M
Aggregate institutional
Institutional Value
$10.31M
Q1 2026
Net New Holders
-10
4 new · 14 closed
Institutional Ownership Trend
Aggregate 13F value by quarter
Multi-quarter trend — upgrade to see history
UpgradePosition Activity
Q1 2026
New positions4
Increased10
Decreased3
Sold out14
Institutional Holders
30 funds hold this security · Q1 2026
| # | Fund | Shares | Value | Δ Shares | Activity |
|---|---|---|---|---|---|
| 1 | Adage Capital Partners Gp, L.L.C. | 700.0K | $3.31M | +700.0K | New |
| 2 | Redmile Group, LLC | 441.7K | $2.09M | 0 | Held |
| 3 | Mackenzie Financial Corp | 313.6K | $1.48M | +255.0K | Added |
| 4 | Point72 Asset Management, L.P. | 194.3K | $918.9K | +176.0K | Added |
| 5 | Ecor1 Capital, LLC | 99.6K | $471.1K | −473.6K | Reduced |
| 6 | Blackrock, Inc. | 79.0K | $373.8K | +11.9K | Added |
| 7 | Geode Capital Management, LLC | 66.1K | $313.0K | +3.8K | Added |
| 8 | Ubs Group AG | 50.1K | $236.8K | +48.7K | Added |
| 9 | Staley Capital Advisers Inc | 50.0K | $236.5K | 0 | Held |
| 10 | Millennium Management LLC | 47.7K | $225.6K | +47.7K | New |
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