Its shares fell $ 9.61 to $ 50.26 , ranking as the NYSE 's most-active issue and its biggest percentage loser .
Altria shares fell 2.2 percent or 96 cents to $ 42.72 and were the Dow 's biggest percentage loser .
Altria shares fell 2.5 percent or $ 1.11 to $ 42.57 and were the Dow 's biggest percentage loser .