Unusual Option Activity

A trader sold 1,047 OII Jan 75 Puts for $0.45 (8 times usual volume) with stock at $76.97
A trader bought 18,000 CMCSA Apr 55 Calls for $1.02 (7.2 times usual volume) with stock at $51.21
A trader bought 1,500 JIVE Apr 12.5 Calls for $0.85 (3.8 times usual volume) with stock at $11.24
A trader bought 4,100 RT Apr 5 Puts for $0.30 (9.9 times usual volume) with stock at $6.36
A trader bought 8,809 TSM Jul 15 Puts for $0.80 (5.7 times usual volume) with stock at $16.93