May 21, 1999 14:41 NEW YORK Most Active Stocks Pier 1 Imports 11 1-16 off 7-16 Mylan Labs Inc 24 9-16 up 3-16 America On Line 128 5-8 off 7-8 AT&T Corp 60 up 3-4 Compaq Computer 25 3-8 off 1-8 Merck & Co Inc 72 1-4 unch Cabletron Sytms 14 11-16 up 1 1-4 Lucent Tech Inc 57 5-8 off 1 3-8 Citigroup Inc 68 off 1 Wal-Mart Stores 43 5-8 off 7-8 NYSE volume 523,126,016 advances 1,551 declines 1,332 unchanged 575 AMEX volume 25,981,200 advances 284 declines 250 unchanged 134 NYSE Comp 638.46 off 0.96 NYSE Inds 797.55 up 0.29 SP Stox 1334.24 off 4.59 AM index 1016.48 off 2.67 Dow Jones Averages 2:30 p.m. 30 Indus 10859.30 off 7.30 20 Trans 3563.57 off 44.95 15 Utils 325.93 up 1.32 65 Stock 3292.90 off 8.13 May 21, 1999 14:40 AMEX Most Active Stocks Hasbro Inc 29 11-16 off 3-4 Metromedia Intl 7 9-16 up 1-16 Devon Energy 36 3-8 up 2 5-8 Keane Inc 30 1-4 up 1-8 Barrister Info 4 1-4 up 1 1-4  