Steel prices have slumped sharply this month, prompting steelmakers (NYSEARCA:SLX) such as Nucor...

Steel prices have slumped sharply this month, prompting steelmakers (NYSEARCA:SLX) such as Nucor (NYSE:NUE), ArcelorMittal (NYSE:MT) and ThyssenKrupp to send out letters last week notifying customers that they would no longer offer discounts on index prices, WSJ reports. The effort to halt rampant undercutting faces challenges from other steelmakers that continue to offer discounts and special deals.