Trulia Jumps On Acquisition News; Armstrong World Shares Slide By: Benzinga via Benzinga July 28, 2014 at 13:05 PM EDT Midway through trading Monday, the Dow traded down 0.19 percent to 16,928.93 while the NASDAQ tumbled 0.40 percent to 4,431.88. The ... Read More >> Related Stocks: Armstrong World Industries Inc Cal-Maine Foods IN Cummins Dollar Tree Family Dollar Stores Korea Electric Power Corp ADR Tyson Foods