(January 19, 2016, 11:56 AM EST) -- NEW YORK — Parties in a securities class action lawsuit recently asked a federal judge to determine whether a pension fund has properly pleaded an actionable misstatement and materiality in making its federal securities law claims (Dekalb County Employees Retirement System v. Contraloardora Vuela Compañia de Aviación S.A.B. de C.V., et al., No. 15-1337, S.D. N.Y.)....