International stocks trading in New York closed higher on Tuesday, with the Bank of New York index of American depositary receipts gaining 1% to 150.83. The European index climbed 1.3% to 150.01, the Asian index rose 0.4% to 146.72, the Latin American index increased 0.7% to 272.13 and the emerging markets index jumped 1% to 269.26. Among companies with shares that actively traded was AstraZeneca PLC (AZN, AZN.LN).

U.K. drug maker AstraZeneca said it expects to return to growth sooner than analysts predict, forecasting that 2017 revenue will be broadly in line with that of 2013. The company has been struggling with one of the industry's worst "patent cliffs," or low-cost generic competition to its patented drugs. Leerink Swann upgraded AstraZeneca to outperform and boosted its price target, saying that the company is on the cusp of becoming a leader in biologics and specialty care, with especially-good opportunities in oncology. Shares rose 4.3% to $62.17.

Norwegian oil and gas major Statoil ASA (STO, STL.OS) said Tuesday it has awarded two offshore wind-farm contracts, worth an estimated $848 million, to Siemens AG (SI, SIE.XE). Statoil shares rose 1.4% to $24.91, while Siemens shares added 1.5% to $135.35.

Goldman Sachs upgraded Logitech International SA (LOGI, LOGN.EB) to buy from neutral, pointing to PC stabilization and the Swiss computer-peripherals maker cost cutting, among other things. Share rose 4.7% to $14.58.

Chinese solar stocks added to the indice's gains, with JinkSolar Holding Co. (JKS) rising 9.4% to $36.25, ReneSola Ltd. (SOL) up 8% to $4.03, Trina Solar Ltd. (TSL, K3KD.SG) up 6.6% at $16.18 and Yingli Green Energy Holding Co. (YGE) up 5.7% at $6.89.

Write to Anna Prior at anna.prior@wsj.com