Unusual Option Activity

A trader bought 3,980 AFFX Dec 7.5 Puts for $0.65 (14.3 times usual volume) with stock at $7.74
A trader bought 7,300 EWJ Nov 11 Puts for $0.11 (3.3 times usual volume) with stock at $11.88
A trader bought 6,800 AMTD Jan 2015 35 Calls for $1.20 (4.8 times usual volume) with stock at $28.70
A trader bought 15,400 MTW Jan 2015 30 Calls for $0.90 (5.8 times usual volume with stock at $19.25
A trader bought 2,288 DAN Jun 19 Calls for $2.15 (6.4 times usual volume) with stock at $19.29