Short call

A short call is the position an investor holds after selling a call option they did not previously own. The seller — the writer — collects the option's premium immediately. In exchange, they are obligated to deliver the underlying stock at the strike price if the option is exercised against them. Writers of short calls are bearish or neutral: they profit when the stock stays at or below the strike and the option expires worthless.

The math is straightforward but the risk is not. Maximum gain is limited to the premium received. Breakeven is the strike price plus the premium. For example, selling an XYZ 50 call for a premium of 3 brings in $300 per contract; the position breaks even at $53 and keeps the full $300 only if XYZ stays at or below $50 through expiration. Above $53, losses grow point for point with the stock.

If the writer does not own the underlying shares, the position is a naked (uncovered) call, which carries theoretically unlimited loss potential — there is no ceiling on how high a stock can rise. Owning the shares turns the position into a covered call, a far more conservative income strategy, since the shares can simply be delivered if the option is exercised.

Short calls are heavily tested on the options portions of the securities exams. The SIE exam covers the basic mechanics and maximum gain/loss, the Series 7 exam adds breakeven calculations and covered versus naked comparisons plus call spreads, and the Series 9 exam tests short calls and spread strategies from a supervisory perspective.