CME Group said one of its clearing systems was hacked in July and the incident is the subject of a federal criminal investigation.
Goldman Sachs experienced a trading glitch that caused a huge batch of erroneous trades Tuesday. Many may be canceled but the snafu could still cost Goldman upwards of $100 million.
CBOE won a long-running court battle to prevent rival International Securities Exchange from listing options on two key stock market indexes.
After suffering steep losses in one fund, the Yucaipa Companies, the money management firm run by the billionaire Ronald W. Burkle, has cut fees for investors in the portfolio, The New York Times reports.
Nasdaq OMX Group said it will form a joint venture with SharesPost to establish a marketplace for private companies. The stock exchange operator will retain a majority stake in Nasdaq Private Market.
Shares in credit rating agency Moody's fell sharply on Friday as it faces a possible federal fraud lawsuit over its pre-crisis debt ratings.
The U.S. must do more than the recently passed "fiscal cliff" measures if the country is to rescue its Aaa debt rating from its current negative outlook, rating agency Moody's Investors Service said on Wednesday.