NEW YORK - Over-the-counter (OTC), bondholder and exchange-based plaintiffs in the London InterBank Offered Rate (LIBOR) antitrust litigation on May 17 moved for leave to amend their amended complaints to add allegations of antitrust injury related to their claims that 16 banks manipulated the LIBOR interest rate benchmark (In re: LIBOR-Based Financial Instruments Antitrust Litigation, No. 11 MD 2262, S.D. N.Y.).