Earnings Roundup: NYSE Euronext, Rambus

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NEW YORK (AP) NYSE Euronext, formed last year by the combination of NYSE Group Inc. and Euronext NV, said Tuesday that fourth-quarter profit more than tripled as trading volume surged and more companies listed on the exchange.

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LOS ALTOS, Calif. (AP) Memory chip maker Rambus Inc. said late Monday it swung to a fourth-quarter loss as sales fell.

SAN DIEGO (AP) Illumina Inc., which makes gene analysis instruments, said Tuesday it expects its first-quarter and fiscal 2008 results to beat Wall Street estimates.

TAMPA, Fla. (AP) Electricity and natural gas distributor Teco Energy Inc. said Tuesday its fourth-quarter earnings more than tripled, boosted by the sale of the company's transport business.

PLANO, Texas (AP) Perot Systems Corp., an information technology services provider, said Tuesday its fourth quarter profit jumped 38 percent as revenue from government services, acquired businesses and new contracts offset the effect of an expiring contract.

ST. LOUIS (AP) Electrical products maker Emerson Electric Co. said Tuesday fiscal first-quarter profit rose 27 percent, aided in part by increases in process management and network power revenue.

NEW YORK (AP) Investment bank KBW Inc. said Tuesday its fourth-quarter earnings fell 86 percent due to restricted stock awards and a sharp decline in investment banking revenue.