Introduction to Important Option Terms

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Published on 2026-02-12 Updated on 2026-02-12

(1) Strike Price (also known as "Exercise Price"): If a stock's market price is $100 and you buy a $150 call option, $150 is the strike price.

(2) Expiration Date (also known as "Exercise Date"): If you buy an option that expires on July 15, 2030, that day is the expiration date.

(3) Open Interest: The number of contracts that have not yet expired and have not been executed.

(4) Contract: The unit of options is contracts, usually each contract represents the right to 100 shares of stock.

(5) Settlement Type: Stock options are generally physically settled (Physical Settlement), while index options are generally cash settled (Cash Settlement).

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