Option Chain for Global Blood Therapeutics Inc. (GBT) 

$ 54.68   0.86 (+1.60%) Volume: 1.28m 4:00 PM EDT 20-Sep-2019
After Hours:  $ 54.68 0.00 (0.00%) Volume: 254.39k 5:01 PM EDT 20-Sep-2019
Option Filter:        Type:        Help
Sep 19  |  Oct 19  |  Dec 19  |  Jan 20  |  Mar 20  |  Jan 21  |  Jan 22  |  Near Term  |  All
Calls Last Chg Volume Open Int Root Strike Puts Last Chg Volume Open Int
18-Oct-2019 5.22 -0.18 34 766 GBT 50.00 18-Oct-2019 1.60   0 1730
18-Oct-2019 2.45 0.45 64 651 GBT 55.00 18-Oct-2019 2.85 -0.49 120 183
18-Oct-2019 0.75 0.15 12 499 GBT 60.00 18-Oct-2019     0 0