Warsaw - Delayed Quote • PLN Mercor S.A. (MCR.WA) Follow Add holdings 23.00 -0.40 (-1.71%) At close: May 28 at 4:26:21 PM GMT+2 Conversations Related Tickers NL NL Industries, Inc. 7.36 -1.34% NSSC Napco Security Technologies, Inc. 27.90 -1.55% ALLE Allegion plc 143.10 -0.99% ZDC.V Zedcor Inc. 3.7900 +0.53%