Unusual Options Activity

A trader sold nearly 900 RIGL Feb 2.5 Puts for $0.20 (16.7 times usual volume) with stock at $2.65
A trader bought 3,000 HA Apr 9 Calls for $0.90 (53.4 times usual volume) with stock at $9.21
A trader bought 4,000 SIAL Apr 100 Calls for $0.85 (125 times usual volume) with stock at $93.01
A trader bought 4,800 ONNN Jan 8 Calls for $0.40 (86.5 times usual volume) with stock at $8.22
A trader bought 4,000 PAL Mar 1 Puts for $0.425 (6.8 times usual volume) with stock at $0.74