Big bets being laid on Rite Aid

• Shares of Rite Aid (RAD +2.9%) spike higher as chatter on a buyout offer from Walgreens Boot Alliance pops up again.
• Last week, a Walgreens exec made an under-the-radar comment at an investor conference on the company looking for an U.S. acquisition.
• Options traders note RAD calls are being gobbled up at a high rate.
• Previously: Walgreens Boots Alliance eyes U.S. drugstore acquisition (Mar. 12 2015)