U.S. stock futures edge higher as most European shares fall

15 European nations put on credit watch with negative implications

But earlier gains are pared

Don't let the low price-to-earnings ratio fool you

Reports of an upcoming downgrade rattle market rally

Broad index sits on 200-day moving average

Hope for a euro zone resolution breathes life into markets

Italy announces plans to slash spending, raise taxes

Make or break week for the euro?

Upbeat payrolls report doesn't cut it