Mixed Day for U.S. Stocks After Long-Weekend Break

New Apple iPhone expected to be unveiled at Sept. 14 event. Toyota to spend $9 billion on electric-car battery plants. Blackstone to buy Chamberlain Group for about $5 billion. Match Group to be included in S&P 500 index. AMC reports record Labor Day weekend admissions. J.R. Whalen reports. Learn more about your ad choices. Visit megaphone.fm/adchoices