SIMPLEX TRADING, LLC - ATARA BIOTHERAPEUTICS INC ownership

ATARA BIOTHERAPEUTICS INC's ticker is ATRA and the CUSIP is 046513107. A total of 74 filers reported holding ATARA BIOTHERAPEUTICS INC in Q2 2015. The put-call ratio across all filers is 2.50 and the average weighting 0.4%.

Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of ATARA BIOTHERAPEUTICS INC
ValueSharesWeighting
Q3 2023$140
+94.4%
94,974
+109.8%
0.00%
Q2 2023$72
+89.5%
45,264
+244.2%
0.00%
Q1 2023$38
+1166.7%
13,151
+1141.8%
0.00%
Q4 2022$3
-99.9%
1,059
-21.6%
0.00%
Q3 2022$5,000
-91.2%
1,351
-81.5%
0.00%
Q2 2022$57,000
-76.2%
7,318
-71.6%
0.00%
Q1 2022$239,000
+273.4%
25,792
+530.6%
0.00%
Q4 2021$64,000
+433.3%
4,090
+427.7%
0.00%
Q3 2021$12,000
+20.0%
775
+14.8%
0.00%
Q2 2021$10,000
+150.0%
675
+112.3%
0.00%
Q1 2021$4,000
-88.6%
318
-88.3%
0.00%
Q3 2020$35,000
+84.2%
2,712
+18.5%
0.00%
Q1 2020$19,000
-86.3%
2,288
-73.0%
0.00%
Q4 2019$139,000
+202.2%
8,489
+156.5%
0.00%
Q3 2019$46,000
-58.9%
3,309
-40.9%
0.00%
Q2 2019$112,000
+387.0%
5,603
+857.8%
0.00%
Q1 2019$23,000
-76.3%
585
-79.2%
0.00%
Q4 2018$97,000
-41.6%
2,819
-37.9%
0.00%
-100.0%
Q2 2018$166,000
+3220.0%
4,543
+1302.2%
0.00%
Q3 2017$5,000
-84.4%
324
-77.4%
0.00%
-100.0%
Q2 2016$32,000
+166.7%
1,436
+122.3%
0.00%
+100.0%
Q1 2016$12,000
-72.1%
646
-53.4%
0.00%
-66.7%
Q3 2015$43,000
-8.5%
1,385
+53.4%
0.00%
-25.0%
Q2 2015$47,0009030.00%
Other shareholders
ATARA BIOTHERAPEUTICS INC shareholders Q2 2015
NameSharesValueWeighting ↓
Antipodean Advisors LLC 1,000,000$1,480,0007.58%
Redmile Group, LLC 6,280,813$9,295,6030.44%
Arctis Global LLC 397,046$587,6280.32%
Baupost Group 9,773,616$14,4650.28%
JOSH ARNOLD INVESTMENT CONSULTANT, LLC 230,000$413,4000.24%
MAVERICK CAPITAL LTD 6,290,713$9,310,2550.21%
683 Capital Management, LLC 1,200,000$1,776,0000.14%
STALEY CAPITAL ADVISERS INC 1,000,000$1,480,0000.08%
WASATCH ADVISORS LP 8,399,229$12,430,8590.08%
PACIFIC HEIGHTS ASSET MANAGEMENT LLC 525,000$777,0000.07%
View complete list of ATARA BIOTHERAPEUTICS INC shareholders