Last weekit filed a suit against unknown investors who had profited in theoptions market before the announcement of a takeover of TXU, the Texanutility.

上周它冻结了一些匿名投资者500万美元利润并提起了诉讼，原因是他们在德州事业（证券代码TXU）被收购的消息发布前，通过期权市场进行套利活动。