Quarterly Put Option Transactions in Gritstone Bio, Inc. (GRTS)
This table provides information about the institutional ownership of Gritstone Bio, Inc. (GRTS). The information is specifically focused on institutions that hold put options of Gritstone bio, Inc..
Puts Purchased
Puts Sold
| Quarter | Buy | Sell | Net Activity | |||||
|---|---|---|---|---|---|---|---|---|
| New Holding | Increment | Total Shares Bought | Closed Position | Reduction | Total Shares Sold | |||
| Q3 2021 | 0 | 190,100 | 190,100 | — | 190,100 | |||
| Q4 2021 | 0 | 210 | 210 | 102,100 | 0 | 102,100 | -101,890 | |
| Q1 2022 | 46,400 | 0 | 46,400 | — | 46,400 | |||
| Q2 2022 | — | 2,700 | 0 | 2,700 | -2,700 | |||
| Q3 2022 | 1,400 | 0 | 1,400 | 40,600 | 0 | 40,600 | -39,200 | |
| Q4 2022 | — | 40,900 | 0 | 40,900 | -40,900 | |||
| Q1 2023 | 40,800 | 0 | 40,800 | — | 40,800 | |||
| Q2 2023 | — | 50,700 | 0 | 50,700 | -50,700 | |||
| Q3 2023 | 27,400 | 0 | 27,400 | 3,600 | 0 | 3,600 | 23,800 | |
| Q4 2023 | 46,400 | 0 | 46,400 | — | 46,400 | |||
| Q1 2024 | 523,500 | 3,893,500 | 4,417,000 | — | 4,417,000 | |||
| Q2 2024 | — | 459,500 | 0 | 459,500 | -459,500 | |||
| Q3 2024 | 3,400 | 0 | 3,400 | 39,300 | 0 | 39,300 | -35,900 | |