-13% at the time of writing.
Someone looks to have decided they won't get GBST for the current offer. A bit savage to see such a reaction. A bit of a perfect storm given a weak tech lead overnight and the brexit related issues being noted by LNK.
Approx 29m shares placed at $5.75, so only takes a few angry fundies to cause such a slump with ~7m shares traded on the selloff..