Corn futures options reference a particular CBOT corn futures contract. The contract determines the quantity, quotation and position created by exercise. Start with Corn Options for the call and put payoff examples.
Quantity and price units
One standard contract covers 5,000 bushels. Corn is quoted in cents per bushel. A 20-cent option premium equals $0.20 × 5,000, or $1,000. Multiplying 20 by 5,000 without converting cents would overstate the cost by a factor of 100.
Identify the underlying month
The option expires separately from its underlying future. Check both dates: an option labelled with a particular month may stop trading before that month begins. Weekly and short-dated series can reference a later futures contract.
A continuous price chart stitches together different futures months. Its latest price is useful context, but you need the exact underlying month to calculate an option’s intrinsic value.
Exercise creates a position
For a futures-deliverable call, exercise creates a long futures position at the strike. For a put, it creates a short futures position. Keeping that future introduces further price risk and margin requirements.
A corn future held into delivery can bring grain delivery obligations. Holding a put is not a sale of the grower’s own crop; that cash sale is a separate transaction.
Selling before exercise
The option may have remaining time value before expiration. Selling it to close can preserve that value, while exercise uses only the intrinsic value. Compare the available prices, spreads and fees.
Your broker can impose instruction deadlines earlier than exchange deadlines and may close positions before delivery. Confirm its policy and the margin needed for any resulting future before holding an option through expiration.
Continue learning
Where to trade covers broker access and costs. What moves prices? covers the underlying market.
References
Official contract information. Examples are hypothetical and exclude fees. Contract information checked 14 September 2026.