Almost cut in halfOver the past year, the Greggs share price has fallen by 49%. The five-year picture is better, with Greggs shares moving up 26% during that period. Greggs shares almost halving in value over 12 months is clearly not great news for investors who bought then. Fortunately for me, I did not buy Greggs shares a year ago. When it fell though, I was able to tuck some Greggs shares into my portfolio and I plan to hold them for the long term.