Simplex Trading
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Simplex Trading’s Atara Biotherapeutics ATRA Stock Holding History

Simplex Trading’s Portfolio ATRA Stock Details ATRA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2024
Q3 		– Sell
-7,700
Closed -$65K – 8430
2024
Q2 		$65K Buy
+7,700
New +$116K ﹤0.01% 5803
2023
Q4 		– Sell
-64
Closed -$2K – 8739
2023
Q3 		$2K Sell
64
-12
-16% -$534 ﹤0.01% 8034
2023
Q2 		$3K Sell
76
-656
-90% -$37.1K ﹤0.01% 8177
2023
Q1 		$53K Buy
+732
New +$71K ﹤0.01% 5846
2022
Q4 		– Sell
-212
Closed -$20K – 9167
2022
Q3 		$20K Buy
212
+144
+212% +$16.2K ﹤0.01% 7501
2022
Q2 		$13K Sell
68
-156
-70% -$25.5K ﹤0.01% 8019
2022
Q1 		$52K Buy
224
+200
+833% +$63.7K ﹤0.01% 7059
2021
Q4 		$9K Hold
24
– – ﹤0.01% 9093
2021
Q3 		$9K Hold
24
– – ﹤0.01% 8977
2021
Q2 		$9K Buy
24
+23
+2,300% +$8.2K ﹤0.01% 9144
2021
Q1 		$27K Sell
1
-1
-50% -$442 ﹤0.01% 7205
2020
Q4 		$107K Sell
2
-2
-50% -$923 ﹤0.01% 5382
2020
Q3 		$145K Buy
4
+3
+300% +$1.02K ﹤0.01% 4491
2020
Q2 		$36K Sell
1
-2
-67% -$505 ﹤0.01% 5767
2020
Q1 		$58K Sell
3
-2
-40% -$635 ﹤0.01% 4973
2019
Q4 		$207K Hold
5
– – ﹤0.01% 3712
2019
Q3 		$160K Buy
5
+2
+67% +$746 ﹤0.01% 3800
2019
Q2 		$156K Hold
3
– – ﹤0.01% 3714
2019
Q1 		$266K Buy
3
+2
+200% +$1.86K ﹤0.01% 3300
2018
Q4 		$125K Sell
1
-2
-67% -$1.86K ﹤0.01% 3629
2018
Q3 		$318K Sell
3
-1
-25% -$978 ﹤0.01% 3100
2018
Q2 		$396K Sell
4
-8
-67% -$8.59K ﹤0.01% 2698
2018
Q1 		$65K Buy
+12
New +$10.9K ﹤0.01% 2163
2017
Q3 		– Sell
-1
Closed -$2K – 5862
2017
Q2 		$2K Buy
+1
New +$385 ﹤0.01% 5181
2015
Q4 		– Sell
-1
Closed -$28K – 5360
2015
Q3 		$28K Buy
+1
New +$1.22K ﹤0.01% 2448

Other funds holding ATRA

EC
EcoR1 Capital San Francisco, California $2.06B AUM 215.32% 1-Year Est. Return
RG
Redmile Group San Francisco, California $1.49B AUM 208.7% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
VPC
Vestal Point Capital New York $4.28B AUM 239% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $2.2B AUM 156.35% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

Simplex Trading's ATRA Position: Q1 2024 in Review

Simplex Trading sold out of Atara Biotherapeutics (ATRA) in Q1 2024, closing a stake of 257 shares — an estimated $4.56K sold.

Simplex Trading first reported a position in ATRA in Q2 2015 and held it in 25 quarters. The position peaked at $239K in Q1 2022. 82 funds tracked by Wall St. Rank hold ATRA as of Q1 2024.

  • Simplex Trading reported no remaining Atara Biotherapeutics position as of Q1 2024 after selling out during the quarter.
  • Simplex Trading sold 257 Atara Biotherapeutics shares in Q1 2024, an estimated $4.56K.
  • Simplex Trading first reported a position in Atara Biotherapeutics in Q2 2015 and held it in 25 quarters.
  • Simplex Trading's Atara Biotherapeutics position peaked at $239K in Q1 2022.
  • 82 funds tracked by Wall St. Rank held Atara Biotherapeutics as of Q1 2024.

Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.