Oil — The World's Most Traded Commodity
Module 6: Commodities
The substance that built the modern world
Imagine someone turned off all the oil in the world for 24 hours.
No petrol for cars. No jet fuel for aircraft. No diesel for trucks, ships, and trains. No feedstock for the plastics, fertilisers, pharmaceuticals, and synthetic materials that fill every home, hospital, and factory on earth. No heating oil for homes in cold climates. No lubricants for the engines, turbines, and machinery that power industry.
The global economy would stop. Not slow down. Stop.
Oil is not just the world''s most traded commodity. It is the single most important physical input to modern civilisation. The price of oil touches every other price in the global economy. It determines what you pay at the fuel pump, what airlines charge for tickets, what supermarkets charge for food, and ultimately what central banks decide to do with interest rates.
For traders, oil is one of the most consistently opportunity-rich instruments available, precisely because so much of the world''s economic activity is priced in and around it, and because its price is driven by a set of forces that are largely knowable, trackable, and anticipatable.
The two benchmarks , Brent and WTI
When people talk about the oil price, they are almost always referring to one of two benchmarks. Understanding the difference is the starting point for trading oil intelligently.
Brent Crude is produced in the North Sea and is the global benchmark for oil pricing. Roughly two thirds of the world''s oil contracts are priced relative to Brent. It reflects supply and demand conditions in Europe, Africa, and the Middle East.
WTI, West Texas Intermediate, is the American benchmark. It is produced in the United States and reflects supply and demand conditions in North America, particularly the massive shale oil production that has transformed the US into the world''s largest oil producer over the past fifteen years.
The two prices generally move together because they are both crude oil. But they can diverge significantly when conditions specific to one region change. When US shale production surges and pipeline capacity to export is limited, WTI can trade at a significant discount to Brent. When Middle Eastern supply is disrupted, Brent often moves more sharply than WTI because of its closer geographic connection to the affected supply.
For traders on Navion Pro, both Brent and WTI are available as CFDs. Most traders focus on Brent as the global benchmark, particularly when trading around geopolitical events or OPEC decisions.
What drives the oil price
Oil is driven by a smaller set of more concentrated forces than most other commodities. Understanding these forces is what makes oil one of the most tradeable of all commodities.
OPEC and OPEC+ are the most important force in the oil market. OPEC, the Organisation of the Petroleum Exporting Countries, is a cartel of oil-producing nations that collectively controls roughly 40% of global oil supply as of 2026. OPEC+ expands this to include Russia and other non-OPEC producers. Together they control the largest and most accessible reserves of oil on the planet.
When OPEC+ decides to cut production, prices rise. When they increase production, prices fall. Their meetings, held several times per year, are the single most market-moving scheduled events for oil prices. A surprise production cut can send Brent up 5 to 8% in a single session. A surprise production increase can send it down by a similar amount.
US shale production is the primary counterbalance to OPEC''s power. The shale revolution transformed the United States from a major oil importer into the world''s largest producer within a decade. US shale producers are price-responsive. When oil prices rise they drill more, increasing supply and capping price gains. When prices fall below their production cost, typically around $50 to $60 per barrel for most shale operators as of recent industry estimates, they cut drilling, reducing supply.
Global demand growth is the third key driver. Oil demand grows when the global economy expands. China''s industrialisation over the past three decades has been the single largest driver of global oil demand growth. When Chinese economic data disappoints, oil prices often fall in anticipation of lower Chinese demand.
The inventory data , the weekly health check
Unlike many financial markets where data is released monthly or quarterly, the oil market gets a weekly health check in the form of inventory data.
Every Wednesday the US Energy Information Administration releases its weekly petroleum inventory report. This shows how much crude oil and refined products are sitting in US storage facilities. The market uses this data as a real-time indicator of supply and demand balance.
When inventories build, when storage levels rise more than expected, it signals that supply is outpacing demand. Oil is piling up. This is bearish for the price.
When inventories draw down, when storage levels fall more than expected, it signals that demand is outpacing supply. Barrels are being consumed faster than they are being produced. This is bullish for the price.
The EIA inventory release every Wednesday at 10:30am New York time is one of the most consistently market-moving weekly events for oil traders. Even traders who take a longer-term approach to oil check the weekly inventory numbers because they provide early warning of shifts in the supply-demand balance.
Oil's relationship with currencies
Oil''s dominance as the global energy source creates direct and predictable relationships with specific currencies that every oil trader should understand.
The Canadian dollar, CAD, is the most direct oil-linked currency in the G10. Canada is one of the world''s largest oil exporters and oil represents a significant portion of Canadian export revenues. When oil prices rise, more dollars flow into Canada to pay for those exports, strengthening CAD. When oil prices fall, CAD weakens.
The Norwegian krone, NOK, has a similar relationship. Norway is Europe''s largest oil producer and its economy is heavily dependent on oil revenues.
For net oil importers, the relationship is reversed. Japan imports almost all of its oil. Higher oil prices increase Japan''s import bill, weakening the yen. India is similarly affected.
Understanding these relationships lets you use oil price moves to inform positions in currency markets and vice versa. A trader who sees oil breaking to a new high might look at USD/CAD for a short opportunity, selling the dollar and buying the oil-linked Canadian dollar, as a way to express the same fundamental view with currency market precision.
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