AIR - After Hours Gainers / Losers (3/20/2018) March, 20 2018 05:35 PM AAR Corp. Top gainers: PRTA +20.5%. KEP +7.7%. MULE +4.6%. LAUR +4.5%. SCS +3.2%. More news on: Prothena Corp plc, Korea Electric Power Corporation, MuleSoft, Stocks on the move, , Read more ...