Quarterly Call Option Transactions in Gritstone Bio, Inc. (GRTS)
This table provides information about the institutional ownership of Gritstone Bio, Inc. (GRTS) during . The information is specifically focused on institutions that hold call options of Gritstone bio, Inc..
Calls Purchased
Calls Sold
| Quarter | Buy | Sell | Net Activity | |||||
|---|---|---|---|---|---|---|---|---|
| New Holding | Increment | Total Shares Bought | Closed Position | Reduction | Total Shares Sold | |||
| Q3 2021 | 138,600 | 133,100 | 271,700 | — | 271,700 | |||
| Q4 2021 | 13,100 | 307,000 | 320,100 | 41,900 | 0 | 41,900 | 278,200 | |
| Q1 2022 | 44,800 | 0 | 44,800 | 77,100 | 307,000 | 384,100 | -339,300 | |
| Q2 2022 | — | 107,400 | 0 | 107,400 | -107,400 | |||
| Q3 2022 | 37,000 | 0 | 37,000 | 7,200 | 0 | 7,200 | 29,800 | |
| Q4 2022 | 19,400 | 0 | 19,400 | — | 19,400 | |||
| Q1 2023 | 30,600 | 0 | 30,600 | — | 30,600 | |||
| Q2 2023 | 0 | 44,100 | 44,100 | 98,800 | 0 | 98,800 | -54,700 | |
| Q3 2023 | 0 | 82,800 | 82,800 | 24,100 | 0 | 24,100 | 58,700 | |
| Q4 2023 | 0 | 119,400 | 119,400 | 700 | 0 | 700 | 118,700 | |
| Q1 2024 | 535,700 | 200,008 | 735,708 | — | 735,708 | |||
| Q2 2024 | 0 | 1,083,333 | 1,083,333 | 283,600 | 0 | 283,600 | 799,733 | |
| Q3 2024 | 33,700 | 0 | 33,700 | 15,600 | 0 | 15,600 | 18,100 | |