NEW YORK ( TheStreet) -TheStreet Ratings' stock model upgraded eMagin Corp ( EMAN) to 'Buy' from 'Hold'. Net income at this $93.8 million market cap, organic LED company doubled by 137.6% to $2.8 million in the third quarter over the same quarter last year. TheStreet Ratings released rating changes on 18 U.S. common stocks for November 15, 2010. In total, nine stocks were downgraded and nine stocks have been upgraded by our stock model. In the third quarter, gross revenue at eMagin rose by 35.2% to $8.3 million in the third quarter when compared to the same quarter last year. Learn more about eMagin: Company Profile, Income Statement, Balance Sheet, Stock Ratios, Analyst Ratings. $32.6 billion market cap, integrated oil & gas company, Repsol YPF SA ( REP) was upgraded to 'Buy' from 'Hold'. In third quarter results, Repsol YPF gross revenue increased by 18.3% to $23.7 billion while the company's bottom line improved by 26.1% to a profit of $784.6 million compared the year earlier quarter. Learn more about Repsol YPF: Company Profile, Income Statement, Balance Sheet, Stock Ratios, Analyst Ratings. -- Reported by Kevin Baker in Jupiter, Fla. For additional Investment Research check out our Ratings Research Center.