Simplex Trading, LLC Atara Biotherapeutics, Inc. Transaction History

Simplex Trading, LLC

$3.35 Billion
Q1 2024

25 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q4 2023 Feb 02, 2024	SELL	$0.23 - $1.74 $20,364 - $154,063	-88,542 Reduced 93.23%	6,432 $3,000
Q3 2023 Nov 01, 2023	BUY	$1.41 - $2.31 $70,091 - $114,830	49,710 Added 109.82%	94,974 $140,000
Q2 2023 Aug 04, 2023	BUY	$1.5 - $3.04 $48,169 - $97,623	32,113 Added 244.19%	45,264 $72,000
Q1 2023 Apr 27, 2023	BUY	$2.8 - $5.46 $33,857 - $66,022	12,092 Added 1141.83%	13,151 $38,000
Q4 2022 Feb 02, 2023	SELL	$2.85 - $5.18 $832 - $1,512	-292 Reduced 21.61%	1,059 $3,000

Q3 2022 Nov 04, 2022	SELL	$2.85 - $8.73 $17,005 - $52,091	-5,967 Reduced 81.54%	1,351 $5,000
Q2 2022 Aug 03, 2022	SELL	$4.69 - $9.84 $86,643 - $181,784	-18,474 Reduced 71.63%	7,318 $57,000
Q1 2022 May 02, 2022	BUY	$8.44 - $16.89 $183,164 - $366,546	21,702 Added 530.61%	25,792 $239,000
Q4 2021 Feb 23, 2022	BUY	$14.7 - $19.89 $48,730 - $65,935	3,315 Added 427.74%	4,090 $64,000
Q3 2021 Oct 28, 2021	BUY	$11.99 - $17.9 $1,199 - $1,789	100 Added 14.81%	775 $12,000
Q2 2021 Aug 12, 2021	BUY	$12.89 - $16.58 $4,601 - $5,919	357 Added 112.26%	675 $10,000
Q1 2021 Apr 26, 2021	BUY	$14.0 - $20.72 $4,452 - $6,588	318 New	318 $4,000
Q4 2020 Feb 02, 2021	SELL	$12.67 - $26.23 $34,361 - $71,135	-2,712 Closed	0 $0
Q3 2020 Oct 14, 2020	BUY	$11.92 - $15.87 $32,327 - $43,039	2,712 New	2,712 $35,000
Q2 2020 Jul 13, 2020	SELL	$7.53 - $14.93 $17,228 - $34,159	-2,288 Closed	0 $0
Q1 2020 Apr 29, 2020	SELL	$5.69 - $17.78 $35,283 - $110,253	-6,201 Reduced 73.05%	2,288 $19,000
Q4 2019 Feb 05, 2020	BUY	$10.89 - $16.79 $56,410 - $86,972	5,180 Added 156.54%	8,489 $139,000
Q3 2019 Oct 15, 2019	SELL	$12.03 - $19.94 $27,596 - $45,742	-2,294 Reduced 40.94%	3,309 $46,000
Q2 2019 Jul 26, 2019	BUY	$19.05 - $41.04 $95,592 - $205,938	5,018 Added 857.78%	5,603 $112,000
Q1 2019 Apr 18, 2019	SELL	$28.4 - $41.74 $63,445 - $93,247	-2,234 Reduced 79.25%	585 $0
Q4 2018 Jan 16, 2019	BUY	$30.9 - $42.97 $87,107 - $121,132	2,819 New	2,819 $97,000
Q3 2018 Oct 23, 2018	SELL	$35.05 - $43.5 $159,232 - $197,620	-4,543 Closed	0 $0
Q2 2018 Jul 30, 2018	BUY	$35.15 - $51.45 $159,686 - $233,737	4,543 New	4,543 $166,000
Q4 2017 Jan 10, 2018	SELL	$13.2 - $18.1 $4,276 - $5,864	-324 Closed	0 $0
Q3 2017 Oct 25, 2017	BUY	$13.25 - $17.05 $4,293 - $5,524	324	324 $5,000

Others Institutions Holding ATRA

# of Institutions

Shares Held

85M

Call Options Held

18.4K

Put Options Held

51.3K

Eco R1 Capital, LLC San Francisco, CA

10.2M
Shares

$86.4 Million
0.2% of portfolio
Redmile Group, LLC San Francisco, CA

9.26M
Shares

$78.7 Million
0.25% of portfolio
Black Rock Inc. New York, NY

6.83M
Shares

$58.1 Million
0.0% of portfolio
Bank Of America Corp Charlotte, NC

6.58M
Shares

$55.9 Million
0.0% of portfolio
Ken Griffin Citadel Advisors LLC | Chicago, Il

6.51M
Shares

$55.4 Million
0.0% of portfolio

View Full List

About Atara Biotherapeutics, Inc.

Ticker ATRA
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 94,362,304
Market Cap $802M
Description
Atara Biotherapeutics, Inc., an off-the-shelf T-cell immunotherapy company, develops treatments for patients with cancer, autoimmune, and viral diseases in the United States. It is developing tabelecleucel, a T-cell immunotherapy that is Phase 3 clinical trials for the treatment of epstein-barr virus (EBV) driven post-transplant lymphoproliferat...

More about ATRA

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