ETF managers report higher retail investor interest in oil futures trackers, with daily creations exceeding redemptions for six consecutive sessions. American Express is an advertising partner of Motley Fool Money. Selena Maranjian has positions in Apple and Berkshire Hathaway. The Motley Fool has positions in and recommends Apple, Berkshire Hathaway, Chevron, Vanguard S&P 500 ETF, and Zoetis. The Motley Fool recommends Occidental Petroleum. The Motley Fool has a disclosure policy . On SoFi Invest — another trading platform used mostly by traders under 40 — USO was "by far" the highest-volume security on Tuesday and Wednesday. Account ownership of USO has grown by 20% to 30% every day since April 20th, according to SoFi. Month over month, ownership of the ETF has increased 300%. Meanwhile, USO has plunged more than 45% this month, and roughly 80% this year. The energy sector rally is boosting oil futures ETF NAVs, with some leveraged products up over 15% in the past month.