Upgrades Tudor Pickering upgraded the previous rating for EQT Corp (NYSE: EQT ) from Hold to Buy. EQT earned $0.41 in the fourth quarter, compared to $0.02 in the year-ago quarter. At the moment, the stock has a 52-week-high of $38.73 and a 52-week-low of $15.71. EQT closed at $38.31 at the end of the last trading period. For JetBlue Airways Corp (NASDAQ: JBLU ), MKM Partners upgraded the previous rating of Sell to Neutral. JetBlue Airways earned $0.36 in the fourth quarter, compared to $1.53 in the year-ago quarter. The current stock performance of JetBlue Airways shows a 52-week-high of $21.60 and a 52-week-low of $11.37. Moreover, at the end of the last trading period, the closing price was at $11.90. For PPL Corp (NYSE: PPL ), Credit Suisse upgraded the previous rating of Neutral to Outperform. In the fourth quarter, PPL showed an EPS of $0.22, compared to $0.59 from the year-ago quarter. The stock has a 52-week-high of $30.71 and a 52-week-low of $25.27. At the end of the last trading period, PPL closed at $29.11.