Goldman slashes legal cost estimate

(Reuters) - Goldman Sachs Group Inc cut the upper end of its estimate of legal costs it may face beyond what it has set aside by more than half to $2 billion. The Wall Street bank, which ranked No. 1 in advising on both announced and completed mergers and acquisitions globally in 2015, is involved in a number of judicial, regulatory and arbitration proceedings. Goldman is among several financial firms targeted by a federal-state working group probing misconduct in the sale of mortgage-backed sec