The Financial Services Authority today issued one of its biggest fines to date after a tribunal ruled against the biggest market makers on London's junior market over claims of share ramping that saw a particular stock soar fourfold.

The UK Financial Services Authority said Thursday it is imposing fines of £4.25m (€4.9m) on Winterflood and two traders for market abuse after it won a market abuse case in the Court of Appeal. It is the ninth largest fine ever issued by the FSA.