An option is a contract. It gives you the right — but not the obligation — to buy or sell something at a set price, before a set date.
That “not the obligation” part is the whole idea. You’re buying a choice.
A real-world analogy
Imagine you find a house you love that costs $300,000. You’re not ready to buy today, so you pay the owner $5,000 for the right to buy it at $300,000 any time in the next year.
- If prices jump and the house is now worth $360,000 — great, you use your right and buy at $300,000.
- If prices fall and it’s worth $250,000 — you simply walk away. You only lose the $5,000 you paid.
That $5,000 is the premium. That contract is an option.
The pieces every option has
- Underlying — the thing the contract is about (a stock, an index, the house).
- Strike price — the agreed price you can buy or sell at ($300,000 above).
- Expiration — the deadline after which the choice disappears.
- Premium — what you pay to hold the right.
Why people use them
- Leverage — control a lot of value for a small premium.
- Protection — insure a position against a drop.
- Income — get paid the premium for selling someone else a choice.
That’s it. Everything else in this course builds on this one idea: an option is a paid choice with a deadline.