
Seven core OPEC+ members kept October production quotas unchanged at a September video meeting and deferred talks on 2027 baselines. The group's share of global oil output fell to about 40% after the UAE exited OPEC and the Iran war disrupted exports.
Unchanged quotas and a shrinking OPEC+ share of supply leave the group less able to steer crude prices, so the market is driven more by China demand and Gulf export disruptions.
After 175 past neutral policy events, Crude Oil (Brent) moved a median -0.9% over 5 sessions (45% higher; middle half -3.6% to +3.0%), and +0.7% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.