Apple shares continued to slip Monday on concerns about early demand for the company's newest iPhone.
THE SPARK: Apple is now taking orders for one of its newest iPhones. The stripped-down, lower-cost 5C model is housed in plastic casing that will be offered in a variety of colors instead of an aluminum casing. The phone will be available Friday along with another new model, the 5S.
The 5S is the first iPhone to be sold with Apple's revamped mobile software, iOS 7, already installed.