STILL SLOW: Having cheered more Fed stimulus last week, investors are now fretting that the economy may be weaker than they thought. The Dow Jones industrial average and the Standard & Poor's 500 both slid for a third straight day.
SMARTPHONE SUCCESS: Apple jumped $23.23, or 5 percent, to $490.60 after the company said it sold 9 million units of its top-of-the-line iPhone 5S and less-expensive iPhone 5C during their first three days on sale. That's almost double the number of units last year's iPhone model sold.
SMARTPHONE FAILURE: Blackberry's stock has been battered as the company lost ground to Apple and other smartphone rivals. But the stock climbed 10 cents, or 1.1 percent, to $8.82 after it agreed to be acquired by a group led by its largest shareholder, Fairfax Financial Holdings.