Susquehanna options strategist Alison Edwards notes bullish options activity in Sprouts Farmers Market (NASDAQ: SFM), amid unconfirmed takeover rumors, as an opening investor bought 4500 May 22.5 calls for $0.25 to $0.61. This investor expresses sentiment that stock could see more upside through the end of the week and has exposure to any further developments regarding the takeover rumors.