Last week, pastry maker Greggs (LSE: GRG) issued its interim results – and the FTSE 250 company's share price soared. Greggs shares are now 22% higher than they were just a month ago. I took advantage of the share price surge to sell some of my Greggs shares. Now trading at 15 times earnings, Greggs shares no longer look like a screaming bargain to me. I reckon it's worth consideringStill, while I have reduced my holding, I plan to hang onto my current Greggs shares for the foreseeable future.