The markets opened lower with the Dow falling 58 points to 12,095 over continued concerns about the European debt crisis. Nasdaq lost 11 points to 2666.

On the upside

Citigroup analyst Walter Pritchard upgraded Salesforce.com (NYSE: CRM) to a Buy rating and raised his price target to $158.  

Lowe’s (NYSE: OMX) reported lower third quarter earnings but the results topped analyst estimates and the home improvement retailer lifted its full year outlook. 

Delta Air Lines (NYSE: DAL) will add twelve new flights from New York beginning in the spring.

On the downside

Ctrip.com International (Nasdaq: CTRP) reported higher third quarter earnings but the travel services company forecast current quarter revenue below analyst expectations.

Investors locked in profits on Gerdau (NYSE: GGB), whose stock price climbed on Friday after reporting higher third quarter earnings that surpassed analyst expectations.   

Shares of ATP Oil & Gas (Nasdaq: ATPG) continued falling after Knight Capital Group analyst Vivek Pal said that the company may not have the capital to make interest payments.

In the broad market, declining issues outpaced advancers by a margin of nearly 5 to 2 on the NYSE and by nearly 2 to 1 on Nasdaq. The Russell 2000 which tracks small cap stocks slipped 3 points to 740.