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Livermore
Livermore
ZHEN

UBS Group AG

SEC CIK
0001610520
Latest filing
Aug 13, 2026

ATRA holding history

Atara Biotherapeutics, Inc. in every 13F filed by UBS Group AG, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

ATRA overviewAll 13F holders of ATRAFull Q2 2026 holdings

Shares (Q2 2026)
3,979
Value
$45.7K
% of portfolio
<0.1%
Quarters held
22
Since Q1 2021
Holdings of ATRA by UBS Group AG, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 20263,979$45.7K<0.1%−46,091−92.1%ReducedHolders
Q1 202650,070$236.8K<0.1%+48,673+3,484.1%AddedHolders
Q4 20251,397$25.3K<0.1%−15,871−91.9%ReducedHolders
Q3 202517,268$247.5K<0.1%+8,883+105.9%AddedHolders
Q2 20258,385$64.7K<0.1%−15,949−65.5%ReducedHolders
Q1 202524,334$144.5K<0.1%+23,500+2,817.7%AddedHolders
Q4 2024834$11.1K<0.1%+432+107.5%AddedHolders
Q3 2024402$3.27K<0.1%−1−0.2%ReducedHolders
Q2 2024403$3.43K<0.1%−3,856−90.5%ReducedConverted for a 1-for-25 splitHolders
Q1 2024106,465$73.9K<0.1%−3,586,760−97.1%ReducedHolders
Q4 20233,693,225$1.89M<0.1%+3,634,733+6,214.1%AddedHolders
Q3 202358,492$86.6K<0.1%+7,117+13.9%AddedHolders
Q2 202351,375$82.7K<0.1%−283,212−84.6%ReducedHolders
Q1 2023334,587$970.3K<0.1%−20,684−5.8%ReducedHolders
Q4 2022355,271$1.17M<0.1%+269,457+314.0%AddedHolders
Q3 202285,814$325.0K<0.1%+44,996+110.2%AddedHolders
Q2 202240,818$318.0K<0.1%−208,465−83.6%ReducedHolders
Q1 2022249,283$2.32M<0.1%+3,689+1.5%AddedHolders
Q4 2021245,594$3.87M<0.1%+110,274+81.5%AddedHolders
Q3 2021135,320$2.42M<0.1%+103,517+325.5%AddedHolders
Q2 202131,803$494.0K<0.1%−70,894−69.0%ReducedHolders
Q1 2021102,697$1.47M<0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.