A federal bankruptcy judge last week ruled against increasing Lehman Brothers’ reserves for residential MBS claims. The ruling by Judge Shelley Chapman of the U.S. Bankruptcy Court for the Southern District of New York was a setback for investors and trustees who asked the court in August to increase Lehman’s current reserves of $5 billion to $12.1 billion in a bid to force the defunct investment bank to repurchase legacy MBS., according to a Barclay’s Research report. The lawsuit against Lehman alleges...