Unususal Option Activity

A trader bought 23,050 BAC Jan 15 Calls for $1.50 (2.3 times usual volume) with stock at $16.47
A trader bought 4,967 CTRP Feb 41 Puts for $1.70 (5.4 times usual volume) with stock at $45.94
A trader bought 2,031 HTZ Jun 31 Calls for $2.05 (3.9 times usual volume) with stock at $28.88
A trader bought 14,000 NRF Mar 15 Calls for $0.325 (2.8 times usual volume) with stock at $13.82
A trader bought 4,200 YGE Jan 8 Puts for $1.80 (2.9 times usual volume) with stock at $6.44