Bearish Signals

A trader bought 11,500 NIHD Jan 2016 2 Puts for $1.00 (4.4 times usual volume) with stock at $2.43
A trader bought 1,200 MILL May 5 Puts for $0.45 (6.9 times usual volume) with stock at $7.59
A trader bought 5,534 ORCL Nov 29th 35 Puts for $0.15 (3 times usual volume) with stock $35.06
A trader bought 14,000 RTN Jan 87.5 Puts for $2.46 (8.8 times usual volume) with stock at $87.59