This will be a light trading week. The week between Christmas and New Years is typically a long holiday where traders only come in to work to catch-up on paperwork rather than actively trade.
However, the markets may be turning over right now. So a light trading week could mean technical problems for the market.
We have new home sales on Wednesday and Existing home sales on Thursday.
The Chicago Purchasing Manager's index comes out on Friday. This will be important especially in light of last week's weak Philadelphia number.