AKS - Rough day for steel sector as U.S. Steel plunges 15% April, 27 2018 12:32 PM AK Steel Holding Corporation U.S. Steel (X -15.2%) is at session lows after disappointing results and guidance last night. More news on: United States Steel Corporation, AK Steel Holding Corp, Nucor Corporation, Stocks on the move, Commodities news, News on ETFs, Read more ...