Natural-gas prices snapped a three-week winning streak on continued concerns about ample supplies. Front-month futures for June delivery settled down 6.2 cents, or 2.1%, to $2.887 a million British thermal units on the New York Mercantile Exchange. Prices fell 4.3% on the week. Prices have rallied in recent weeks since hitting a nearly three-year low in April, as cheap prices and hotter temperatures spurred expectations of demand for gas-fueled power generation to run air-conditioning units. Natural-gas stockpiles grew less than expected last week, an indication of stronger consumption. But after prices rose Thursday on the inventory data, “traders were quick to take their money and run,” said Aaron Calder, analyst at Gelber & Associates in Houston, in a note. Robust production continues to keep the market subdued. In addition, some power generators switch from natural gas to coal when gas prices near $3 a million […]