Oil headed for a third monthly decline as U.S. drillers showed no signs of letting up even as a supply glut persists. Futures fell as much as 2 percent in New York after the biggest two-day rally since 2009. The number of active rigs seeking oil in the U.S. increased for a sixth week to 675, the most since the start of May, according to Baker Hughes Inc. A measure of oil-price fluctuations rose Friday to a five-month high. Oil is holding losses after a slide this month below $40 a barrel, the lowest since February 2009, on concern slowing demand in the U.S. and China will leave the global market oversupplied. While crude has swung higher amid a rebound in commodities and equities, prices are still down more than 25 percent from this year’s peak in June. “The retracement is the market coming back to the reality that […]