BlackRock’s Atara Biotherapeutics ATRA Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$970K Buy
84,455
+5,433
+7% +$43.3K ﹤0.01% 4363
2026
Q1
$374K Buy
79,022
+11,914
+18% +$72.7K ﹤0.01% 4600
2025
Q4
$1.21M Sell
67,108
-2,725
-4% -$40.7K ﹤0.01% 4248
2025
Q3
$1M Sell
69,833
-1,015
-1% -$11.7K ﹤0.01% 4283
2025
Q2
$547K Buy
70,848
+10,050
+17% +$73.3K ﹤0.01% 4419
2025
Q1
$361K Sell
60,798
-48
-0.1% -$419 ﹤0.01% 4472
2024
Q4
$810K Sell
60,846
-108
-0.2% -$1.14K ﹤0.01% 4273
2024
Q3
$496K Sell
60,954
-191
-0.3% -$1.64K ﹤0.01% 4332
2024
Q2
$520K Sell
61,145
-212,114
-78% -$3.19M ﹤0.01% 4334
2024
Q1
$4.74M Sell
273,259
-10,230
-4% -$182K ﹤0.01% 3688
2023
Q4
$3.63M Sell
283,489
-24,348
-8% -$568K ﹤0.01% 3820
2023
Q3
$11.4M Sell
307,837
-22,693
-7% -$1.01M ﹤0.01% 3256
2023
Q2
$13.3M Sell
330,530
-40,322
-11% -$2.28M ﹤0.01% 3281
2023
Q1
$26.9M Buy
370,852
+4,766
+1% +$462K ﹤0.01% 2821
2022
Q4
$30M Buy
366,086
+9,606
+3% +$1M ﹤0.01% 2804
2022
Q3
$33.7M Buy
356,480
+5,892
+2% +$662K ﹤0.01% 2729
2022
Q2
$68.3M Buy
350,588
+38,582
+12% +$6.3M ﹤0.01% 2277
2022
Q1
$72.5M Sell
312,006
-656
-0.2% -$209K ﹤0.01% 2346
2021
Q4
$123M Buy
312,662
+6,598
+2% +$2.78M ﹤0.01% 2065
2021
Q3
$137M Sell
306,064
-2,737
-0.9% -$981K ﹤0.01% 2000
2021
Q2
$120M Buy
308,801
+30,837
+11% +$11M ﹤0.01% 2140
2021
Q1
$99.8M Buy
277,964
+19,787
+8% +$8.75M ﹤0.01% 2194
2020
Q4
$127M Buy
258,177
+22,498
+10% +$10.4M ﹤0.01% 1927
2020
Q3
$76.4M Buy
235,679
+30,429
+15% +$10.4M ﹤0.01% 2054
2020
Q2
$74.8M Buy
205,250
+22,639
+12% +$5.72M ﹤0.01% 2024
2020
Q1
$38.9M Sell
182,611
-606
-0.3% -$192K ﹤0.01% 2212
2019
Q4
$75.4M Buy
183,217
+5,271
+3% +$1.82M ﹤0.01% 2119
2019
Q3
$62.8M Buy
177,946
+24,288
+16% +$9.06M ﹤0.01% 2154
2019
Q2
$77.3M Buy
153,658
+14,281
+10% +$10.1M ﹤0.01% 2070
2019
Q1
$139M Sell
139,377
-1,152
-0.8% -$1.07M 0.01% 1673
2018
Q4
$122M Buy
140,529
+898
+0.6% +$834K 0.01% 1661
2018
Q3
$144M Buy
139,631
+5,047
+4% +$4.93M 0.01% 1712
2018
Q2
$124M Buy
134,584
+20,806
+18% +$22.4M 0.01% 1807
2018
Q1
$111M Buy
113,778
+35,288
+45% +$32.2M 0.01% 1774
2017
Q4
$35.5M Sell
78,490
-1,216
-2% -$449K ﹤0.01% 2474
2017
Q3
$33M Buy
79,706
+2,765
+4% +$1.04M ﹤0.01% 2529
2017
Q2
$26.9M Buy
76,941
+7,893
+11% +$3.04M ﹤0.01% 2624
2017
Q1
$35.5M Buy
69,048
+68,549
+13,737% +$28.4M ﹤0.01% 2427
2016
Q4
$177K Sell
499
-9
-2% -$3.81K ﹤0.01% 2222
2016
Q3
$272K Buy
508
+264
+108% +$143K ﹤0.01% 1998
2016
Q2
$137K Buy
244
+201
+467% +$96.5K ﹤0.01% 2335
2016
Q1
$20K Buy
43
+23
+115% +$10.4K ﹤0.01% 2839
2015
Q4
$13K Sell
20
-21
-51% -$15.9K ﹤0.01% 2754
2015
Q3
$32K Buy
41
+28
+215% +$34.1K ﹤0.01% 2117
2015
Q2
$17K Buy
13
+7
+117% +$8.03K ﹤0.01% 2468
2015
Q1
$6K Hold
6
﹤0.01% 2966
2014
Q4
$4K Buy
+6
New +$3.66K ﹤0.01% 3103

Other funds holding ATRA

BlackRock's ATRA Position: Q2 2026 in Review

BlackRock increased its Atara Biotherapeutics (ATRA) stake by 6.9% in Q2 2026, buying an estimated $43.3K and bringing the position to 84,455 shares worth $970K. The position accounts for ﹤0.01% of the portfolio, ranked #4363.

BlackRock first reported a position in ATRA in Q4 2014 and has held it in 47 quarters since. The position peaked at $144M in Q3 2018. 21 funds tracked by Wall St. Rank hold ATRA as of Q2 2026.

  • BlackRock held 84,455 shares of Atara Biotherapeutics worth $970K as of Q2 2026.
  • BlackRock bought 5,433 Atara Biotherapeutics shares in Q2 2026, an estimated $43.3K.
  • Atara Biotherapeutics made up ﹤0.01% of BlackRock's portfolio in Q2 2026, its #4363 holding.
  • BlackRock first reported a position in Atara Biotherapeutics in Q4 2014 and has held it in 47 quarters since.
  • BlackRock's Atara Biotherapeutics position peaked at $144M in Q3 2018.
  • 21 funds tracked by Wall St. Rank held Atara Biotherapeutics as of Q2 2026.

Based on BlackRock's 13F filing for Q2 2026, filed 7 Aug 2026.