Now you don't see this every day. Shares in Crawshaw Group have jumped 4,757% (no, that's not a typo).
However, don't go complaining to your broker about not being tipped off. It is, as you may have guessed, a technicality. Butchers group Crawshaw reversed into Aim-listed Felix Group and issued 10m new shares as part of a capital reorganisation. Today is the first day of dealings in the new entity, and in reality the shares have moved up from the acquisition issue price of 37.5p to 42.5p.
Still, watch for this to mess up the indices and biggest movers of the day.