How oil prices are actually set

There is no single 'price of oil.' What people usually mean is the front-month futures price of a benchmark crude — most often WTI or Brent. That number is the result of millions of trades, but it sits on top of a much deeper system of physical markets, contracts, and policy.

Spot prices are what producers and refiners actually pay or receive for immediate delivery of a specific cargo. Spot deals are negotiated bilaterally and reported to price reporting agencies like Platts and Argus, which publish daily benchmark assessments.

Futures markets sit on top of spot. They allow producers, refiners, airlines, shippers, and speculators to lock in prices for delivery weeks, months, or years out. Because futures are highly liquid and continuously traded, they are the de facto reference price most people quote.

OPEC+ — the cartel of major exporters — sets production quotas that directly shape global supply. When OPEC+ cuts output, prices typically rise; when it raises output or quotas slip, prices typically fall. Member compliance, internal politics, and side deals with non-members all influence how powerful any given decision turns out to be.

Inventories matter just as much. Weekly U.S. crude stock data (released by the EIA) and global inventory estimates from the IEA can move prices significantly. A draw on inventories suggests demand is outpacing supply; a build suggests the opposite.

Finally, currency, geopolitics, and macro sentiment layer on top of all of this. A stronger dollar tends to weigh on dollar-denominated oil prices. A geopolitical disruption — war, sanctions, a pipeline outage — can spike prices in minutes. Understanding oil means understanding all of these forces at once.