Bearish Signals

A trader bought 5,500 NIHD Jan 2015 3 Puts for $1.20 (3.4 times usual volume) with stock at $2.92
A trader bought 2,300 WU Jan 60 Puts for $0.50 (2.4 times usual volume) with stock at $16.48
A trader bought 950 MAR Jan 47-43 Call Spreads for $1.20 (2.4 times usual volume) with stock at $47.23
A trader bought 1,800 CALL Jan 2015 10 Puts for $2.05 (3.7 times usual volume) with stock at $12.57