Naked Option

A naked option is a short option position, meaning one the investor has sold rather than bought, that is not backed by the position that would satisfy the obligation if the option is exercised. The writer of a naked call does not own the underlying shares; the writer of a naked put does not hold a short stock position or an offsetting long put. In exchange for the premium received, the writer carries an open-ended obligation with nothing set aside against it.

The naming is worth one sentence, because the regulator uses both words. FINRA's rulebook calls this "uncovered." Rule 2360(b)(36) defines the term entirely in the negative, as a short option position that "is not covered", which sends the reader to Rule 2360(a)(10) for what covering requires. FINRA's own investor education calls it "naked." Its Options page writes of "an uncovered, or naked, call", and its glossary entries describe the writer of an uncovered call as the writer of what is "also known as a naked call" and the writer of an uncovered put as the writer of "a naked put". The two words name the same position, and this page leads with the one readers search for.

What "covered" requires, since "uncovered" is defined as its absence. Rule 2360(a)(10) sets out the ways a short option stops being naked. For a short call, the writer's obligation must be secured by a specific deposit or escrow deposit meeting Options Clearing Corporation rules, or the writer must hold in the same account, unit for unit, either a long position in the underlying security or a long call of the same class with an exercise price equal to or less than the short call's. For a short put, the writer must hold in the same account, unit for unit, a long put of the same class with an exercise price equal to or greater than the short put's. Anything else is uncovered.

The asymmetry is the single most important fact on this page. FINRA's investor glossary treats the two cases separately and reaches different conclusions. Of the call: "The maximum loss for the writer of an uncovered call, also known as a naked call, is theoretically unlimited," because there is no ceiling on the price the writer may have to pay to buy shares and deliver them at the strike. Of the put: "The maximum loss for the writer of an uncovered put, also known as a naked put, is the strike price of the put," because the stock cannot fall below zero, so the obligation to buy at the strike is bounded by the strike itself. Both positions can lose far more than the premium collected. Only one of them is unbounded, and treating them as equally catastrophic is as inaccurate as treating them as equally safe.

How much collateral the position ties up, and why the number moves. FINRA Rule 4210(f)(2)(E)(i) sets the strategy-based requirement on a short listed option in a customer account at 100 percent of the option's current market value plus a percentage of the underlying's current market value, which for a stock option is 20 percent. The requirement "may be reduced by any 'out-of-the-money amount'", but it can never fall below 100 percent of the option's market value plus a smaller percentage, 10 percent for a stock option, of the underlying's value; for a short put the floor is calculated against the put's aggregate exercise price. Notice what that structure does as a trade moves against the writer: the option's market value rises, the out-of-the-money reduction shrinks and then disappears, and the requirement climbs on both counts at once. That is why an uncovered writer can face a margin call at exactly the moment the position is hardest to close.

The rules build a gate in front of it. Rule 2360(b)(16)(E) requires every member transacting business with the public in uncovered short option contracts to "develop, implement and maintain specific written procedures" covering at least five things: specific criteria and standards for evaluating a customer's suitability for uncovered writing; specific procedures for approving such accounts, including written approval by a Registered Options Principal; designation of a Registered Options Principal responsible for approving accounts that do not meet the firm's own criteria, with written records of the reasons for each; specific minimum net equity requirements for initial approval and maintenance; and a requirement that approved customers receive "a special written statement for uncovered option writers approved by FINRA that describes the risks inherent in writing uncovered short option transactions" before their first uncovered trade. That is the rule behind what brokers present as their highest options-approval tier. The tier numbers themselves are firm practice rather than rule text and differ between firms.

What the strategy is actually buying. An uncovered writer is selling insurance. The income is the premium, it is capped at the premium, and it arrives reliably in most periods, which is precisely what makes the position psychologically easy to repeat and dangerous to size. The losses are rare, correlated with market stress, and much larger than any one premium. Nothing about that is a reason the strategy cannot be used deliberately by someone who understands it; it is a reason the position should be sized against the worst outcome rather than the usual one.

Start with the call, because that is the unbounded case. An investor sells one call contract on a stock trading at $80, with a strike of $85 and a premium of $2.40. A standard equity option contract covers 100 shares, so the writer receives 100 × $2.40 = $240, and owns none of the underlying stock.

Take an example of each outcome. If the stock finishes below $85, the call expires worthless, the writer keeps the $240, and that is the maximum profit the position can ever produce. If the stock is taken over and finishes at $110, the writer must deliver 100 shares at $85 while buying them at $110: a loss of ($110 − $85) × 100 = $2,500, reduced by the $240 premium, for a net loss of $2,260. Replace $110 with $160 and the loss becomes ($160 − $85) × 100 − $240 = $7,260. There is no price at which the arithmetic stops.

Now the put, which is bounded. The same investor sells one put with a strike of $45 for a premium of $1.80, receiving $180. The worst case is the stock going to zero: the writer must buy 100 shares at $45, paying $4,500 for something worth nothing, and the $180 premium reduces the loss to $4,320. FINRA describes the maximum loss as the strike price of the put, and $4,500 is exactly that, per contract, before the premium.

Finish with the collateral, using the call above and FINRA Rule 4210(f)(2)(E)(i). The option's market value is 100 × $2.40 = $240. Twenty percent of the underlying's value is 0.20 × $80 × 100 = $1,600. The call is out of the money by ($85 − $80) × 100 = $500, which reduces the requirement. So the requirement is $240 + $1,600 − $500 = $1,340. The floor is $240 plus 10 percent of the underlying, 0.10 × $80 × 100 = $800, giving $1,040, which is lower, so $1,340 stands. Now move the stock to $90. The out-of-the-money reduction is gone, 20 percent of the underlying is 0.20 × $90 × 100 = $1,800, and the option itself is worth more than $240, so the requirement has risen by well over $700 while the position lost money. Firms may and often do require more than the rule's minimum.

Pros

• The premium is received immediately and is kept in full whenever the option expires worthless, which is the most common single outcome.
• No shares or offsetting option have to be bought first, so the position ties up less capital than a covered or cash-secured equivalent.
• An uncovered put can be a deliberate way to get paid while waiting to buy a stock at a lower price, provided the writer would genuinely accept the assignment.
• The strategy has a defined, rule-based collateral calculation, so the requirement is knowable in advance rather than discretionary.

Cons

• The maximum loss on an uncovered call is, in FINRA's words, "theoretically unlimited", and an uncovered put's is the full strike price per contract.
• The payoff is asymmetric in the worst way for a beginner: small frequent gains against rare large losses, which flatters the strategy's track record.
• The collateral requirement rises exactly when the position is losing, so a margin call can force a close at the worst price.
• A single gap move on news can pass through the strike overnight, with no opportunity to react in between.