(April 30, 2024, 1:41 PM EDT) -- PHILADELPHIA — Arguing in part that one holding “invented a ‘total eclipse’ standard lacking any basis in” Omnicare, Inc. v. Laborers Dist. Council Constr. Indus. Pension Fund, shareholders filed an appellant brief challenging discovery and summary judgment rulings in a suit over allegations that a reinsurer and some of its former executives violated federal securities laws....