Diamondback Energy, Inc. (NASDAQ:FANG) has announced a 20% increase in its quarterly dividend to $0.60 per share after reporting robust fourth-quarter results, including a revenue of $1.9 billion that surpassed market expectations. The company also reported an earnings per share of $2.94, beating forecasts, and plans to return 50% of its free cash flow to shareholders through dividends and buybacks. Amid rising oil prices and supply concerns, Scotiabank analyst Paul Cheng upgraded Diamondback's stock to 'Outperform,' raising the price target to $160.