Earnings Roundup: Luminex, Arena Resources

Among the earnings stories for Friday, May 8, from AP Financial News:

NEW YORK (AP) — Shares of Luminex Corp., which makes testing systems for biotechnology companies, fell a day after it reported lower-than-expected first-quarter results.

TULSA, Okla. (AP) — Arena Resources Inc., an oil and natural gas exploration company, said its first-quarter profit sank 65 percent as commodity prices plummeted.

CINCINNATI (AP) — Scripps Networks Interactive Inc. reported a 10 percent drop in first-quarter earnings, dragged down by the slumping advertising market and heavy competition for its online comparison shopping Web sites.

ENGLEWOOD, Colo. (AP) — Entertainment media company Liberty Media Corp. posted a mixed quarter for revenue, reporting growth at two smaller units but a decline in its largest division as the poor retail market hurt its QVC Shopping Network.

PEABODY, Mass. (AP) — Beacon Roofing Supply Inc. said its fiscal second-quarter loss narrowed, helped by higher residential roofing sales and strong demand in markets affected by Hurricane Ike.

ATLANTA (AP) — Energy provider Mirant Corp. reported a net profit of $380 million in the first quarter, bouncing back from a loss of $152 million in the year-earlier period. The company also announced senior management changes.