LONDON, Jan 30 (Reuters) - Shares in HSBC brieflyspiked as much as 10 percent on Thursday, before reversing mostof those gains in a move which traders blamed on human error,know in the market as a 'fat finger'.
HSBC shares rose as high as 688 pence before retreating to631 pence. The move in the heavyweight bank also prompted aspike in Britain's FTSE 100, which briefly turnedpositive on the day.
HSBC declined to comment on the move. (Reporting By Toni Vorobyova, Tricia Wright and Steve Slater;Editing by Alistair Smout)