* Nassda Corp. - fell $2.19, or 30 percent, to $5 after closing at $7.19 in regular trading. The software maker said in a statement that earnings for the second quarter ended March 31 were 4 cents a share. The company had forecast 7 cents
* Biogen – co said in a statement that first-quarter profit was 39 cents to 43 cents a share. Biogen had previously forecast earnings of 31 cents to 38 cents
* AT&T - Corp was downgraded to ``in-line'' from `outperform'' at Goldman, Sachs & Co
* AMR - Corp.'s American Airlines would receive more than $3 billion in aid under legislation adopted in House and Senate committees
* Dell Computer Corp. - The personal-computer maker confirmed a Feb. 13 estimate that net will rise to 23 cents a share on revenue of $9.5 billion, in a statement distributed by Business Wire. Dell rose 88 cents to $28.09
* JDA Software Group Inc. - fell $1.94, or 19 percent, to $8.40 after hours. It closed at $10.34 in regular trading. The maker of software used by retailers said it had a Q1 loss of 8 cents to 9 cents a share, because of falling sales. Net income was 16 cents in the year-earlier period