Broadly, indexes were suffering as data showed U.S. services industry activity unexpectedly picked up in November, with employment rebounding, offering more evidence of underlying momentum in the economy. In other economic data this week, investors will also monitor weekly jobless claims, producer prices and the University of Michigan's consumer sentiment survey for more clues on the health of the U.S. economy. It was weighed by U.S. natural gas futures slumping more than 8% on Monday, as the outlook dimmed due to forecasts for milder weather and the delayed restart of the Freeport liquefied natural gas (LNG) export plant. EQT Corp (EQT.N), one of the largest U.S. natural gas producers, led declines with a 7.1% drop. Although bank profits are typically boosted by rising interest rates, they are also sensitive to concerns about bad loans or slowing loan growth amid an economic downturn.

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