Listed Option

A listed option is a call or put contract that trades on a regulated, national options exchange rather than being privately negotiated between two parties. A call gives the buyer the right, but not the obligation, to buy a set amount of an underlying asset (usually 100 shares of a stock) at a fixed price before a certain date. A put gives the buyer the right to sell under the same kind of terms. When an option is "listed," it means the exchange has standardized its terms — the expiration dates, the strike prices (the fixed price at which the option can be exercised), and the contract size are all set by the exchange rather than negotiated by the two people trading it.

Because the terms are standardized and the contract trades on an exchange, listed options have visible, continuous prices that anyone can see, and a clearing house sits between buyer and seller so each side is guaranteed the trade will be honored even if the other party defaults. This is the key structural difference from an over-the-counter (OTC) option, which is a private contract between two counterparties with custom terms and no exchange or centralized guarantee behind it.

The nuance that trips people up is that "listed" doesn't describe anything about the option's strategy, riskiness, or how it behaves — it's purely a statement about where and how it trades. A deep out-of-the-money weekly call on a small stock and a conservative long-dated put on a major index are both "listed options" in exactly the same sense, as long as both trade on a recognized exchange with standardized terms.

Almost all options that a retail trader interacts with through a normal broker are listed options, because OTC options generally require direct institutional relationships and aren't accessible through standard retail trading platforms.