Bullish Signals

A trader bought 5,600 CPWR Nov 11 Calls for $0.10 (2.7 times usual volume) with stock at $10.37
A trader bought 3,300 MM Jan 12.5 Calls for $1.50 (3 times usual volume) with stock at $7.02
A trader bought 5,300 BSX Dec 12 Calls for $0.34 (3.2 times usual volume) with stock at $11.73
A trader bought 4,140 PWE Dec 9-10 Call Spreads for $0.58 (3 times usual volume) with stock at $8.62
A trader bought 14,575 NBL Jan 80 Calls for $1.05 (5 times usual volume) with stock at $73.88