20090420 Market, AdvIssues, DecIssues, UncIssues, AdvVol, DeclVol, UnchVol, NewHis, NewLows NYSE, 308, 2823, 42, 61711000, 1686865000, 2557000, 4, 2 AMEX, 179, 336, 78, 4338000, 8655000, 1549000, 7, 1 NASDAQ, 453, 2316, 109, 914845000, 2123174000, 6037000, 3, 9