I think Ahold is owner of both but their logo's are different and in MD the Giants want nothing to do with my PA Giant card. If Shasta's are 4 for a Dollar with your bonus card I have to pay $.50 each if in MD unless the Cashier is kind enough to swipe a community card. The MD Giant's are named Giant Food's and based in Landover (Let's Go Caps) while the PA Giant is based in Carlisle but like you said I think they are both owned by Netherlands Ahold.