A naked option is a short option sold without an offsetting position to cover it — collecting premium but carrying undefined, potentially unlimited risk. It’s the risky end of premium selling.

What it means

“Naked” (or uncovered) means you sold an option with no hedge — no long option capping the risk, no stock backing it. A naked call has theoretically unlimited risk (the underlying can rise forever); a naked put has large risk (down to zero). You collect the premium, but a big adverse move can cost far more than you took in.

Why it's dangerous

Naked options are how undisciplined premium sellers blow up — the short strangle and short straddle are naked structures. They also carry assignment and margin-call risk. Brokers require high approval and margin for them precisely because the risk is unbounded. On 0DTE, a naked position can implode in minutes.

A naked option collects a fixed premium against unlimited risk — the risk shape that ends accounts. The premium is small; the tail is not.

The takeaway

Naked options are uncovered short options with undefined risk — the opposite of defined-risk trading. Its defined-risk counterpart is the long option, where the most you can lose is what you paid. The safer version of selling premium uses spreads to cap the risk. Understand naked options mainly as a cautionary concept.