The extra yield investors are demanding to hold U.S. high-yield energy company debt has soared to the highest level in more than four years as Goldman Sachs Group Inc. said oil may drop below $20 a barrel . The yield premium to hold the junk-rated debt sold by energy companies over ultra-safe Treasuries widened to the most since 2012, part of a global rout that has seen stocks tumble toward a bear market and volatility rise amid fears of a worldwide economic slowdown. Crude could drop “into the teens,” from about $30 on Tuesday, before supply and demand are brought back into balance, according to Goldman Sachs. This comes as the cost for U.S. high-yield energy companies to borrow has risen to a record high 20 percent as of Feb. 8, according to Bank of America Merrill Lynch indexes. “The negativity surrounding high-yield energy companies is, for the most […]