Quarterly Call Option Transactions in Atara Biotherapeutics, Inc. (ATRA)
This table provides information about the institutional ownership of Atara Biotherapeutics, Inc. (ATRA) during . The information is specifically focused on institutions that hold call options of Atara Biotherapeutics, Inc..
Calls Purchased
Calls Sold
| Quarter | Buy | Sell | Net Activity | |||||
|---|---|---|---|---|---|---|---|---|
| New Holding | Increment | Total Shares Bought | Closed Position | Reduction | Total Shares Sold | |||
| Q1 2021 | — | 0 | 8,105 | 8,105 | -8,105 | |||
| Q2 2021 | — | — | 0 | |||||
| Q3 2021 | 0 | 208 | 208 | 4,300 | 0 | 4,300 | -4,092 | |
| Q4 2021 | 10,600 | 0 | 10,600 | — | 10,600 | |||
| Q1 2022 | 11,700 | 100,000 | 111,700 | 900 | 0 | 900 | 110,800 | |
| Q2 2022 | — | 49,200 | 0 | 49,200 | -49,200 | |||
| Q3 2022 | 0 | 10,600 | 10,600 | 3,200 | 0 | 3,200 | 7,400 | |
| Q4 2022 | 802,100 | 0 | 802,100 | — | 802,100 | |||
| Q1 2023 | 0 | 260,900 | 260,900 | 17,400 | 0 | 17,400 | 243,500 | |
| Q2 2023 | 16,900 | 7,200 | 24,100 | 90,000 | 0 | 90,000 | -65,900 | |
| Q3 2023 | 4,800 | 0 | 4,800 | 6,800 | 0 | 6,800 | -2,000 | |
| Q4 2023 | — | 763,600 | 0 | 763,600 | -763,600 | |||
| Q1 2024 | 8,900 | 0 | 8,900 | — | 8,900 | |||