With earnings out of the way, AMGN is positioned to generate a clean Sell on a close today below $177.23. AMGN is currently trading at $174.25, so a Sell appears very likely. The "Make or Break" (MOB) target for this move is $160.
We will be buying the Jan $175 Puts, currently trading at about $7.50-8.00.
This link discusses the current weakness in the Biotechnology sector: