Donald Trump’s surprise victory in last week’s U.S. presidential election has boosted stocks and the dollar, but undermined much of the commodities complex, including oil, which has sagged as expectations that the world’s largest exporters will agree to reduce output this month have waned.

Brent crude futures were down 27 cents at $44.48 a barrel by 2:40 p.m. ET. The contract dipped to a session low of $43.57, marking its first drop below $44 since Aug. 11. NYMEX U.S. crude futures settled down 9 cents at $43.32 a barrel, after earlier falling to $42.20, the lowest level since Aug. 11.

“In the same way that a strong OPEC agreement was needed to continue the rally above $55, a lack of agreement will be needed to break below $40 and right now, we’re at $45,” Petromatrix strategist Olivier Jakob said. “So I think on a risk basis, we’re starting to be a bit more concerned about the upside price risk, than about the downside.” OPEC plans to cut or freeze output, but analysts doubt the group’s ability to reach an agreement at its meeting on Nov. 30.

The Organization of the Petroleum Exporting Countries said on Friday its output hit a record 33.64 million barrels per day (bpd) in October, and forecast an even larger global surplus in 2017 than the International Energy Agency on Thursday. Yet Saudi Energy Minister Khalid al-Falih has said it was imperative for OPEC members to reach a consensus on activating a deal made in September in Algiers to cut production. Data from the InterContinental Exchange on Monday showed investors delivered the largest weekly cut on record to their bets on a sustained rise in the price of oil. “OPEC know what needs to be done but too few members will agree to take the production pain for the price gain, knowing also that the price gain incentivizes non-OPEC to produce more, lengthening the rebalancing process,” PVM Oil Associates analyst David Hufton said. “OPEC are facing insurmountable problems to which the election of Donald Trump has added.”

The dollar index hit an 11-month peak on Monday, driven by an aggressive sell-off in bonds that has pushed Treasury yields to their highest since January. Ordinarily, a strong dollar would push oil lower, but the correlation between the two is at its most positive in two months, suggesting they are more likely to move in lockstep with one another than in opposite directions.