Largest oil ETF USO shakes up its strategy again as oil price falls through the floorMarket Watch • 04/21/20
Popular oil ETF USO plunges by about 20% at lows after halt as crude prices extend ugly dropMarket Watch • 04/21/20
US Oil Prices Plunge 40% As Storage Runs Out, Analyst Says Oil ETF Investors 'Likely To Burn Their Fingers'Benzinga • 04/20/20
Record Flows Abound In March As Fund And ETF Investors React To COVID-19 And Oil-Related ShocksSeeking Alpha • 04/15/20