The smartphones will be available starting in the U.S., China and seven other countries Friday, and throngs of people have lined up to be among the first to snag one.
Investors will be hoping the phones are a hit and will support Apple's share price, which has declined by 33% over the past year.
Darden Restaurants(DRI), which operates chains including Olive Garden and Red Lobster, reported that quarterly sales increased, compared to the year-earlier quarter, partly because the company acquired more than 140 new restaurants. But profit took a dive, and Darden said it's planning workforce reductions. The company's stock slipped in premarket trading.
Shares in Adidas(ADDDF) fell by just over 4% after the sportswear maker warned that its full-year results would be lower than expected due in part to unfavorable currency fluctuations.
Asian markets had a muted trading session, with the Hong Kong exchange closed for a holiday. But Indian markets grabbed headlines as the Mumbai Sensex dropped sharply. Investors pushed the index down by 2.5% after the Indian central bank announced it was raising interest rates to stem inflation.