The markets started off lightly changed after two straight down days as traders parsed through a bounty of earnings, corporate news and economic data from around the globe.

Bosch Ltd. (500530.BY) Tuesday said it will halt production of auto parts at its factory in the northern Indian city of Jaipur from July 25 to Aug. 4 to avoid inventory built up.

Shares of Brazil's second-largest bank by assets, Itau Unibanco Holding SA (ITUB, ITUB3.BR, ITUB4.BR), were among the biggest gainers during Tuesday morning's session as the bank presented a more benign estimate for its provisions expenses.

AT&T Inc. (T) reported strong second-quarter profit growth of 8.7%, driven by a wireless division that added smartphone subscribers but not costs.

United Parcel Service Inc. (UPS) Chief Executive Scott Davis said the delivery company's customers are increasingly nervous as global economies slow and as issues such as the so-called "fiscal cliff" loom in the U.S.

Campbell Soup Co. (CPB) projected earnings and revenue for the year at the low end of its prior views and warned growth rates for next year will be below its long-term targets.

Switzerland has confirmed the arrest in Spain of Herve Falciani and are now seeking extradition of the Italian-French citizen being sought by police in connection with the theft of customer data from the Geneva branch of HSBC Private Bank.

AT&T quarterly profit topped estimates as the No. 2 carrier boasted better-than-expected user growth in its wireless segment.

National chain store sales fell 1.3% in the first three weeks of July from June, according to Redbook Research's latest indicator, released Tuesday.