As of May 28, the natural gas futures contracts for delivery between July and August were priced in ascending order—a negative development for ETFs that follow natural gas futures including the ProShares Ultra Bloomberg Natural Gas ETF (BOIL) and the United States Natural Gas ETF (UNG).
If the active futures contract expiry is within two weeks, the United States Natural Gas ETF (UNG) shifts its holdings in active natural gas futures to the following month’s futures contract. As a result, the fund could incur losses if next month’s futures are priced at higher levels compared to the expiring futures when it shifts its holdings. BOIL is also impacted by the upward sloping forward curve. On May 21–28, the natural gas June futures fell 2.2%. UNG fell 2.4% and BOIL fell 4.7%.
On May 28, the natural gas futures for July closed at a small discount of ~$0.013 to the July 2020 futures. On May 21, the futures spread was at a premium of $0.009.
The market sentiment toward natural gas’s demand-supply situation is reflected in the futures spread. The futures spread and natural gas prices tend to move in the same direction. In the trailing week, the futures spread shifted from a premium to a discount. Natural gas prices fell by more than two percentage points. The contraction in the spread indicates that the bearish sentiments have risen for natural gas. The contraction could make energy investors’ returns on UNG and BOIL worse.