Earnings roundup: AT&T, Invitrogen

Among the earnings stories for Tuesday, April 22, from AP Financial News:

NEW YORK (AP) _ Showing few signs of being affected by a slowing economy, AT&T Inc.'s first-quarter earnings rose 22 percent on strong growth in wireless.

CARLSBAD, Calif. (AP) _ Invitrogen Corp., which makes kits that researchers use for gene cloning, said Tuesday its first-quarter profit nearly doubled on a sharp increase in sales of drug discovery and research materials.

ATLANTA (AP) _ Manhattan Associates Inc., which provides software and services that help companies manage inventory and supplies, on Tuesday reported first-quarter income above analyst estimates, as revenue climbed.

THOMASVILLE, N.C. (AP) _ Trucking company Old Dominion Freight Line Inc. said Tuesday its first-quarter earnings tumbled 23 percent as surging fuel costs, weak pricing and severe weather countered rising revenue.

SAN FRANCISCO (AP) _ Netflix Inc.'s stock plunged nearly 24 percent Tuesday, an abrupt reversal in fortune driven by concerns about the rising costs facing the online DVD rental leader as it adapts to new technology for watching movies and TV shows.

NEW YORK (AP) _ Everest Re Group Ltd.'s stock slipped Tuesday after the insurer's profit shrank by nearly three-quarters in the first quarter, squeezed by slow premium growth and a steep loss on investments.