U.S. stock index futures were lower Monday ahead of a busy week of earnings reports and as Apple shares were hit by demand worries.
Apple fell amid news that the company cut orders for parts on its troubled iPhone 5 due to weak demand. Shares dipped below $500 in pre-market trading, a level the company hasn't traded below since last February.
While there are no major economic reports due Monday, several members of the Federal Reserve are scheduled to speak.
Fed Chairman Ben Bernanke will speak at 4 pm ET, in his first speech since the Fed's meeting minutes indicated that some policymakers wanted to end the bond buying program before year end.