Nabors Industries (NBR +6.5%) is one of today's top S&P gainers after Guggenheim upgrades...

|About: Nabors Industries Ltd. (NBR)|By:, SA News Editor

Nabors Industries (NBR +6.5%) is one of today's top S&P gainers after Guggenheim upgrades shares to Buy from Neutral, "first and foremost" a valuation call. "Improving U.S. gas market fundamentals and expanding international margins [may] prompt investors to consider how oversold the stock has become" relative to its underlying asset value and strong cash flow.