Selling Premium

Selling premium means writing (selling) options contracts in order to collect the price of the option, called the premium, rather than buying options in hopes they rise in value. When you sell an option, you take on an obligation — to sell shares (if you sold a call) or buy shares (if you sold a put) at a fixed price, called the strike, if the buyer chooses to exercise — and in exchange you're paid upfront by the buyer.

Option premium is made up of two things: the option's intrinsic value (how far it is in-the-money, if at all) and its extrinsic or "time" value, which is driven largely by how much price movement the market expects, known as implied volatility, and by how much time is left until expiration. Sellers of premium are generally betting that the option will lose extrinsic value over time (a process called time decay, or theta decay) or that implied volatility will fall, both of which make the option cheaper to buy back or let it expire worthless — either outcome is profitable for the seller.

The nuance that trips people up is that selling premium flips your risk profile compared to buying options. A buyer risks only what they paid and has theoretically unlimited upside. A seller collects a small, fixed amount upfront but can face large, sometimes theoretically unlimited losses if the underlying moves sharply against the position (this is especially true for uncovered, or "naked," calls). Because of this, selling premium is often done with defined-risk structures, like credit spreads, or against stock you already own, like a covered call, rather than as a naked bet.

Selling premium is a strategy, not a single trade type — traders sell premium through covered calls, cash-secured puts, credit spreads, iron condors, and other structures, all sharing the same core idea: collect money now, and profit if volatility and price movement stay smaller than the market priced in.