From Reuters.com
The day ahead: Tuesday
IPOs from Colony Financial and Apollo Commercial Real Estate kick off the biggest week for U.S. IPOs in nearly two years.
In other news:
* The Federal Reserve begins its two-day open markets committee meeting.
* World leaders meet at U.N. headquarters in New York for a one-day climate summit.
* Lower costs for meats and other commodities are expected to help ConAgra Foods post higher fiscal first quarter profit.
