(September 11, 2015, 1:11 PM EDT) -- BOSTON — A Massachusetts federal judge on Aug. 12 granted summary judgment in an auction-rate securities case, finding that the plaintiff, a construction firm, was told of the risks by the former Banc of America Securities LLC (Tutor Perini Corporation v. Banc of America Securities LLC, No. 11-10895, D. Mass.; 2015 U.S. Dist. LEXIS 106291)....