These were the worst performing ETFs of the week.
BOIL — ProShares Ultra Bloomberg Natural Gas -28.27%
KSET — KraneShares Global Carbon Offset Strategy ETF -18.47%
UNG — United States Natural Gas Fund LP -18.27%
NAIL — Direxion Daily Homebuilders & Supplies Bull 3X Shares -17.34%
GAZ — iPath Series B Bloomberg Natural Gas Subindex Total Return ETN -14.95%