The biggest news of the day is the fact that May crude oil futures traded to negative prices, posting a daily low of negative $40.34 (-$40.32) before settling slightly higher. U.S. crude oil storage capacity is basically nonexistent right now, helping create the price weakness and today’s collapse. May futures posted a $56/barrel drop today while June futures fell a mere $4.60 and closed at $20.43/barrel. 

Some news outlets are reporting that a U.S. exchange traded fund (ETF), USO, is also partly responsible for the crash. According to Forbes, the USO fund owned 25 percent of the outstanding volume of May WTI crude oil futures as of last week. Because funds, especially ETFs, do not typically want to take delivery of futures co...