Today’s tickers: MRK, IMMU, AET, ODP, FSLR, EEM, MFA & XLI
AET – The third-largest health insurer in the United States has enjoyed a rally in shares of more than 13% to $29.08 this afternoon after receiving an upgrade to ‘outperform’ from ‘neutral’ at Cowen and Company. Call options exchanged on the stock today exceeded the number of puts by a factor of more than 3-to-1, reflecting bullish sentiment by investors. The near-term August 30 strike price had more than 8,800 calls purchased for an average premium of 75 cents apiece by…