From the WSJ:Bear Stearns Cos., already forced to shut two hedge funds that bet heavily on the risky subprime-mortgage market, is now facing big losses in a third fund that has roughly $900 million in mortgage investments, according to people familiar with the matter.The fund, known as the Bear Stearns Asset-Backed Securities Fund, ran into trouble in July and has refused to return investors' money for the moment, according to these people. One of these people said the redemption requests were postponed in hopes that the fund's assets would rebound...