As I wrote elsewhere on this board a few weeks ago:
The market is overdue for a correction. The AMGN chart shows substantial up-side resistance at $90 with backing and filling between about 82 and 88. I'd be a buyer on a dip to 81-82. If it breaks below 80 there's trouble ahead. The supply overhang is huge, and the stock has run out of momentum. Long term, AMGN could be a decent "hold" on a correction to 75-73.