YPF shares drop as takeover move weighs By: MarketWatch April 17, 2012 at 14:02 PM EDT Shares of YPF SA drop in Buenos Aires on Tuesday, hit in the wake of the Argentine government’s move to take control of the oil and gas producer. Read More >> Related Stocks: Empresa Distribuidora Y Comercializadora ADR Macy's Repsol S.A. Ypf Sociedad Anonima ADR