Naked writer

A naked writer is someone who sells (writes) an options contract without owning or holding an offsetting position that would limit their potential loss. "Naked" here just means unprotected or uncovered — the opposite of a "covered" position, where the seller already owns the underlying stock (for a covered call) or has set aside the cash to buy it (for a cash-secured put).

To understand why this matters, recall that selling an option obligates you to do something if the buyer exercises their right. Selling a call obligates you to deliver shares at the strike price; selling a put obligates you to buy shares at the strike price. If you own the shares already (covered call) or have the cash ready (cash-secured put), your risk is capped and defined. A naked writer has neither cushion, so if the market moves sharply against them, they must go into the open market and buy or sell shares at whatever price prevails to meet that obligation.

The nuance that trips people up is that the premium collected for writing an option looks like easy, defined income, but the risk on the other side is not defined the same way. A naked call writer faces theoretically unlimited loss, because a stock's price has no upper ceiling. A naked put writer's loss is large but technically capped, since a stock can only fall to zero — though that "cap" can still mean a very large dollar loss on one contract.

Because of this lopsided risk, brokers require traders to have a certain level of options trading approval and post significant margin (collateral) before they will allow naked writing, and the exact requirements vary by broker and by the size and volatility of the position.