By Polya Lesova, MarketWatch NEW YORK (MarketWatch) -- Stocks on Wall Street were little changed on Monday after the previous session's rally as investors awaited U.S. data on the manufacturing sector. Equities moved in and out of positive territory in opening trade. The Dow Jones Industrial Average (DJI) gained 5 points to 12,883, with American Express Co. (AXP) leading gainers. Twelve of the Dow's 30 components traded lower. The S&P 500 index (SPX) added 2 points to 1,364.25, with shares of Best Buy Co. (BBY) leading the index higher. The electronic retailer's shares rallied 8%. The Nasdaq Composite (RIXF) rose 5.17 points to 2,940.26. The Institute for Supply Management will release its manufacturing report for June at 10 a.m. Eastern time. Data on May construction spending are also due at that time. U.S. stocks rallied on Friday after European Union leaders agreed on fresh measures to tackle the euro-zone debt crisis. The Dow gained 3.9% in June, posting its best month since October 2011. For the second quarter, however, the blue-chip index fell 2.5%, registering its first quarterly loss in three quarters.