What it actually is
Wheat is several distinct commodities wearing one name. Hard red winter, soft red winter, hard red spring, durum and UK feed wheat have different protein contents, different uses and different prices. Chicago's contract covers soft red winter wheat and functions as the world reference; a UK farmer hedging actual production uses the London feed wheat contract instead, because that is what they grow and that is where basis risk is lowest.
Why it is traded
The original purpose of futures markets, and still the main one here. A farmer drilling in October has committed the cost of seed, fertiliser and diesel for a crop that will not be sold until the following autumn. Selling futures forward converts an unknowable price into a known one. A miller does the reverse. Speculators take the other side and provide the liquidity that makes both possible.
What moves the price
Weather in a handful of places: the US plains, the Black Sea, Western Europe, Australia, Argentina. Because the southern and northern hemispheres harvest at opposite ends of the year, the market is almost always worried about a crop somewhere.
On top of that sit policy shocks. Export bans during food price spikes, and the disruption of Black Sea shipping after the invasion of Ukraine — which together with Russia had been supplying roughly a quarter of world wheat exports — produced some of the sharpest moves in the contract's history.
How you would actually trade it
UK farmers hedge through grain merchants and co-operatives as much as through direct futures accounts, often using forward contracts with the buyer that the merchant then hedges.
For investors, agricultural ETCs and broad commodity index products give exposure, again with roll cost as a major determinant of returns. Equity alternatives include fertiliser producers, grain traders and agricultural machinery firms — all correlated, none the same thing.
What goes wrong
- Weather is unforecastable and dominates everything.
- Political intervention is common and abrupt: export bans, tariffs, price controls.
- Seasonal basis risk — the difference between the futures contract and the price of your actual grain, in your actual region, can move against you even when your hedge "works".
- Storage and quality. Physical grain degrades; moisture and protein specifications determine whether you receive a premium or a discount.
This entry describes how a market works. It is not a recommendation, a price forecast, or advice about whether this belongs anywhere near your money. How entries are written.