Argentina ADRs rally after Milei's party wins midterm elections

** U.S.-listed shares of Argentine companies gain after President Javier Milei's party wins midterm elections

** Milei's party secures strong mandate, bolstering support to keep pushing through his radical overhaul of the economy

** "This momentum sets the stage for ambitious macroeconomic reforms aimed at boosting private sector savings through tax and labor overhauls, unlocking direct investment and accelerating stabilization efforts," J.P. Morgan analysts say in a note

** Financials including Grupo Supervielle ASUP, Banco Macro ABMT, Banco BBVA Argentina BBARB and Grupo Financiero Galicia AGGA soar between 37% and 49.3%

** State-run oil company YPF YPDCB advances 26.6%, gas transportation firm TGS TGSDB up 33.4% and energy company Pampa Energia APAM climbs 26.2%

** Global X MSCI Argentina ETF ARGT adds 19.06%, though it remains down 10.1% year-to-date

** Argentina's benchmark stock index IMV rises 17.06%, poised for its biggest intraday percentage gain in nearly two years