Horizon Therapeutics (NASDAQ: HZNP) December call option implied volatility is at 47, January is at 43; compared to its 52-week range of 31 to 100 into the Board of Horizon Therapeutics confirms that it is engaged in highly preliminary discussions with Amgen (AMGN), Janssen Global Services (JNJ), and Sanofi (SNY). Call put ratio 2.2 calls to 1 put.