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ATRAATRA
2 quarters

Position history for AGADAGE CAPITAL PARTNERS GP, L.L.C.'s holdings in ATARA BIOTHERAPEUTICS INC

Yes. Adage Capital Partners GP holds 850,000 shares of ATRA (Atara Biotherapeutics), worth $9.8M, as of its Q2 2026 13F filing. It increased the position by 150,000 shares (+21.4%) from Q1 2026. Adage Capital Partners GP has held ATRA since Q1 2026, across 2 quarterly 13F filings.

Current Value

$9.8M

Current Shares

850,000

Total Value Change

+$6.4M

Total Shares Change

+150,000

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q2
Latest
Increased
850,000
+21.4%
$9.8M0.0%$11.48
33
2026-Q1
New
700,000
-
$3.3M0.0%$4.73
37

Other major holders of ATRA: Point72 Asset Management, L.P., VANGUARD GROUP INC, CITADEL ADVISORS LLC, VANGUARD CAPITAL MANAGEMENT LLC

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