Commodity Prices Bulls approached and quickly withdrew from oil's 100-day moving average, driving crude to its first weekly loss since the start of the year. West Texas Intermediate shed 2% this week with much of that retreat occurring on Friday. Throughout the week, oil rallied on optimism driven by China's gathering rebound only to swing as risk-off sentiment descended upon broader markets amid uneven corporate earnings and lingering questions over how the Federal Reserve will react. De ....