Calls with increasing volume at CBOE
VXX 1/20/2017 12 20K contracts
UCO 9/16/2016 9 13K
XOP 9/16/2016 34 9K
SPY 8/12/2016 219 8K
RIG 8/19/2016 12 7K
PSX 11/18/2016 82.50 5K
VXX 1/20/2017 12 20K contracts
UCO 9/16/2016 9 13K
XOP 9/16/2016 34 9K
SPY 8/12/2016 219 8K
RIG 8/19/2016 12 7K
PSX 11/18/2016 82.50 5K