Transportation stocks were generally stronger Thursday following a series of quarterly earnings from the group, but one notable decliner was UPS ( UPS), whose results disappointed Wall Street. Rail company CSX ( CSX) was the best performer on the Dow Jones Transportation Average, gaining 5.7% to $30.50. Union Pacific ( UNP) was rising 4.4% to $49.79 after its first-quarter profit declined from a year earlier, but still exceeded the consensus forecast. The results from Burlington Northern Santa Fe ( BNI) are due after the close, and ahead of the numbers the stock was advancing 2.6% to $68.16. Overall, the transport index was up 0.4%. Elsewhere, at GATX ( GMT), its profit for the latest quarter fell, though it also surpassed expectations. Its shares were up 4.5% to $24.33. JetBlue ( JBLU), which had a quarterly profit and set plans for new routes, was rising 3.2% to $5.76. UPS, however, was down 3.2% to $52.99 following its earnings miss and downside forecast. The worst stock was YRC Worldwide ( YRCW), which tumbled nearly 8% to $3.60 before its most recent numbers, scheduled for after the close of trading.