Fortress Investment Management and John Wace were expected to benefit significantly from holding their respective 1 % and 0.8 % short positions on Friday , wrote Harry Wilson in The Guardian . Close to a tenth of the value was knocked off the telecoms ' ’s books after a profit warning was issued on 8 February .
Blackrock Investment Management and Marshall Wace were set to benefit significantly from holding their respective 1.8% and 0.8% short positions on TalkTalk, wrote Harry Wilson in The Times. Close to a tenth of the value was knocked off the telecoms firm’s shares after a profit warning was issued on 8 February.