Bullish Signals

A trader sold 2,600 MHFI Dec 70 Puts for $0.45 (3.3 times usual volume) with stock at $73.12
A trader bought 3,800 EROC Jan 5 Calls for $0.70 (4.3 times usual volume) with stock at $5.26
A trader bought 1,632 HZNP Feb 6 Calls for $0.95 (9.2 times usual volume) with stock at $5.87
A trader bought 4,700 FAST Feb 50 Calls for $1.20 (3.4 times usual volume) with stock at $46.91
A trader sold 2,700 FDO Jan 65-57.5 Put Spreads for $1.00 (2.4 times usual volume) with stock at $70.35