Jon Najarian Sees Unusual Options Activity In Arconic And Vale By: Benzinga via Benzinga March 21, 2017 at 14:50 PM EDT On CNBC's Fast Money Halftime Report, Jon Najarian spoke about unusually high put options activity in Arconic Inc (NYSE: ARNC) and ... Read More >> Related Stocks: Arconic Corp Vale ADR Representing One Ord Shs