Summary: Markets started off strong Thursday as they responded to the ECB's stimulus move, but eventually fell as traders could not shrug off uncertainty. Southwest Airlines (LUV) shares took flight at the open as the airline joined other competitors that have outperformed thanks to sustained prices for consumers and falling fuel costs. Plus, Starbucks (SBUX) looks to maintain its streak of meeting or beating estimates, and will report earnings today after the close. The company's 9% gains over the last 12 months could be hampered by rising coffee prices.
