Oil futures dropped Monday, pressured on the heels of an OPEC+ deal to boost output and on concerns that the spread of the COVID delta variant will slow oil demand. West Texas Intermediate oil for August delivery
CLQ21,
-7.38%
lost $5.39, or 7.5%, to settle at $66.42 a barrel on the New York Mercantile Exchange. Prices saw the biggest one-day percentage loss since Sept. 8 and settled at their lowest since late May, FactSet data show.