Product or input?
The first question: does the company sell this commodity or buy it? A fertilizer maker selling at prices linked to world markets may see revenue rise when global prices rise. A pasta maker using imported wheat faces the same rise as extra cost. Some companies sit on both sides, buying an input and selling a product whose price is linked to it.
A worked example
Why the simple math is not enough
Four things make the real effect different. First, the dollar: commodities are priced globally in dollars, so a move in the pound can amplify or cancel the effect. Second, inventory: a company may hold materials bought at the old price that last for months. Third, contracts: some companies buy or sell at prices agreed in advance. Fourth, some products are priced locally in other ways, so not every global rise reaches the consumer.
That is why the effect may show up in later periods rather than right away, and how fast depends on inventory, contracts, pricing and the exchange rate. The market may move ahead of the results and price the expectation early.
Follow global commodities
The commodities page shows oil, metals and agricultural prices, which you can compare with sector performance.
Check yourself
1. Global oil prices rise. A company uses a lot of fuel for transport and sells no oil. What is the most direct effect?
2. Why might a company not feel a rise in an input right away?
Summary
- The same commodity move can help those who sell it and squeeze those who buy it as an input.
- The dollar, inventory, contracts and local pricing change the real effect.
- The effect usually shows in results months later, and the market may move first.