Crude oil prices are set by the balance between supply and demand, and by expectations about both. In practice five things do most of the work: OPEC+ production decisions, US output and inventories, global demand led by China and the United States, the US dollar, and geopolitical risk to supply routes. Because supply and demand respond slowly to price, small imbalances produce large moves.
Key takeaways
- The world uses a little over 100 million barrels of oil a day. A surplus or shortage of one or two million is enough to move prices sharply.
- OPEC+ controls a large share of spare production capacity, so its meetings are scheduled risk events.
- The weekly US inventory report, on Wednesdays at 10:30 New York time, is the most regular market mover.
- About a fifth of the world’s oil passes through the Strait of Hormuz, which is why Middle East tension lifts prices.
- Oil is priced in dollars, so a stronger dollar tends to weigh on it.
| Global consumption | A little over 100 million barrels a day |
|---|---|
| Largest producers | United States, Saudi Arabia, Russia |
| Producer group | OPEC+, formed in 2016 when OPEC began coordinating with Russia and others |
| Weekly data | API (Tuesday), EIA (Wednesday 10:30 New York) |
| Monthly reports | OPEC, IEA and EIA outlooks |
| Typical daily move | 2–3% |
| Symbols at Marketsall | WTI, BRENT |
The five drivers of oil prices
| Driver | How it tends to work | What to watch |
|---|---|---|
| OPEC+ policy | Production cuts remove supply and tend to lift prices; increases do the opposite. Compliance matters as much as the announcement. | Ministerial meetings, Saudi pricing, production surveys |
| US supply and inventories | The United States is the largest producer. Rising stocks signal surplus; falling stocks signal tightness. | EIA weekly report, rig counts, Cushing stocks |
| Global demand | Growth in China, India and the United States drives consumption. Recession fears cut demand forecasts. | PMI surveys, Chinese import data |
| The US dollar | A stronger dollar makes oil dearer for buyers using other currencies and tends to lower the price. | US Dollar Index, how the US dollar affects commodities |
| Geopolitics and supply routes | Threats to production or shipping add a risk premium, which fades if no barrels are lost. | Strait of Hormuz, Red Sea, sanctions, how geopolitical shocks move gold, oil and the dollar |
| Seasons and weather | US summer driving and winter heating raise demand; Gulf of Mexico hurricanes can halt output and refining. | Refinery runs, hurricane forecasts |
Why does oil move so much?
In the short run neither side of the market can adjust. Drivers still need fuel when prices rise, and a new oil field takes years to develop. Economists call this inelastic supply and demand. It means the price has to move a long way to clear even a small imbalance, which is why a change of one or two per cent in the supply–demand balance can produce a price change of twenty or thirty per cent.
The oil calendar in UTC
| Event | Local time | UTC (summer / winter) | Frequency |
|---|---|---|---|
| API inventory estimate | Tuesday 16:30 New York | 20:30 / 21:30 | Weekly |
| EIA Weekly Petroleum Status Report | Wednesday 10:30 New York | 14:30 / 15:30 | Weekly; a day later after US holidays |
| Baker Hughes rig count | Friday 13:00 New York | 17:00 / 18:00 | Weekly |
| OPEC, IEA and EIA monthly reports | Varies | Varies | Monthly |
| OPEC+ ministerial meetings | Varies | Varies | Several times a year, sometimes at short notice |
In the EIA report, traders compare the change in crude stocks with forecasts and then look at petrol and distillate stocks, refinery runs and Cushing. A large surprise in any of them can move the price within seconds, and slippage is common. Track the releases in the economic calendar.
How oil connects to other markets
| Market | Typical link | Read more |
|---|---|---|
| Canadian dollar, Norwegian krone | Tend to strengthen when oil rises | USD/CAD guide |
| Inflation and interest rates | Higher oil feeds into consumer prices and rate expectations | oil, inflation and interest rates |
| Euro and yen | Large energy importers; higher oil tends to weigh on them | EUR/USD guide |
| Equity indices | Energy shares gain, fuel-intensive sectors lose; very high oil weighs on the whole market | US500 guide |
What it costs to trade crude oil as a CFD
Oil CFDs track crude futures without delivery. The two benchmarks are compared in WTI vs Brent; the instrument is explained in what a CFD is.
| Cost | When it applies | Note for crude oil |
|---|---|---|
| Spread | Every trade, at entry | A few cents a barrel in New York hours; wider overnight and around inventory data |
| Commission | Depends on instrument and account type | Shown in the symbol specification in MetaTrader 5 |
| Swap / overnight financing | Positions held past the daily rollover | Depends on the provider’s financing method for oil. |
| Contract rollover | Oil CFDs are normally based on monthly futures | See WTI vs Brent. |
| Slippage | Fast markets, gaps, news | Frequent on EIA data and OPEC+ headlines |
Key risks
Unscheduled headlines. OPEC+ comments, attacks on infrastructure and sanctions arrive at any hour.
Data spikes. The weekly inventory report regularly moves the price by more than 1% in a minute.
Weekend gaps. Geopolitical events often happen while the market is closed. See gap risk.
Leverage. With 2–3% daily moves, small positions are large. See position sizing.
Risk warning. Trading CFDs carries a high level of risk since leverage can work both to your advantage and disadvantage. As a result, the products offered on this website may not be suitable for all investors because of the risk of losing all of your invested capital. You should never invest money that you cannot afford to lose, and never trade with borrowed money.
Frequently asked questions
What time is the EIA oil inventory report released?
The US Energy Information Administration publishes its Weekly Petroleum Status Report on Wednesdays at 10:30 New York time, which is 14:30 UTC in summer and 15:30 UTC in winter. After a US public holiday it is usually delayed by a day.
Why does OPEC+ affect oil prices?
OPEC+ members produce a large share of the world’s oil and hold most of its spare capacity. When the group agrees to cut output, supply tightens and prices tend to rise; when it raises output, prices tend to fall. Markets also watch whether members keep to their quotas.
Why do oil prices fall when the dollar rises?
Oil is priced in US dollars. When the dollar strengthens, oil becomes more expensive for buyers who hold other currencies, which reduces demand at the margin. A stronger dollar also often reflects tighter financial conditions that slow economic growth.
Why is oil so volatile?
In the short term both supply and demand respond very little to price: consumers still need fuel and new production takes years. Small surpluses or shortages therefore require large price changes to clear, so daily moves of 2% to 3% are normal.
Related reading
Learn how OPEC+ makes decisions
Because one OPEC+ statement can reset the supply outlook for months, it is worth knowing who sits in the group and how its quotas are agreed. What OPEC is and how it influences oil prices covers that background.
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