By Rodrigo Campos
NEW YORK (Reuters) - U.S. stocks were set to kick off the third quarter with early gains on Tuesday, after a report showed China's factory sector expanded in June for the first time in six months, and ahead of U.S. data expected to show manufacturing continued to grow.
* China's final reading of the HSBC/Markit purchasing managers' index (PMI) for June rose to 50.7 from May's 49.4, edging past the 50-point level that separates growth from contraction for the first time since December.
* Both Markit's and the Institute for Supply Management's measures of factory activity in the United States are due later in the day, at 9:45 a.m. EDT (1345 GMT) and 10:00 a.m. (1400 GMT) respectively. Also at 10:00 a.m., monthly construction spending numbers are out and car sales are due throughout the day.
* S&P 500 e-mini futures
* Manufacturing in Japan, the world's third-biggest economy, also gained pace in June, fueled by improving demand at home, but euro zone growth faltered as Germany, the region's top economy, slowed.
* AT&T
* Amicus Therapeutics
* Other research notes also affected stocks in premarket trading. Urban Outfitters
(Editing by Bernadette Baum)