basicHigh RiskNeutral / Bullish

Naked Put

Sell a put without holding cash to buy the shares. Risk if stock collapses.

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What is a Naked Put?

A naked put (also called an uncovered put or margin-secured put) is when you sell a put option without holding the full cash amount to buy the shares if assigned. Unlike a cash-secured put, you are using margin rather than reserved cash to back the obligation. If the stock falls below the strike, you are obligated to buy 100 shares at the strike price regardless of the current market price. The broker provides margin to cover the potential obligation, but if the stock falls sharply, that margin can be exceeded, triggering a forced margin call. The naked put is less dangerous than a naked call (stocks cannot fall below zero) but still carries substantial risk on a large stock decline. Many active traders use naked puts systematically on quality names, but with strict risk management and sizing discipline.

When to use it

Use a naked put when you are neutral-to-bullish on a stock, want to collect premium with margin efficiency, and are comfortable owning the shares if assigned. The naked put makes sense when your account size and margin allow it without over-concentrating risk, and when the premium collected justifies the exposure relative to the capital at risk. It is most effective in high-IV environments on stocks with strong fundamentals and established support levels. Avoid naked puts on speculative stocks, names approaching earnings, or in overall bearish market environments where assignment would mean catching a falling knife.

Structure

Sell 1 put option on margin without reserving the full strike × 100 in cash. Margin requirements vary by broker but are typically 20–25% of the stock's value plus the out-of-the-money amount. Because you are using leverage, position sizing is critical — a single naked put on a high-priced stock can represent substantial notional exposure relative to your account.

Key Metrics

Max Profit

Premium received × 100, earned in full if the stock closes above the strike at expiration. Identical to a cash-secured put in terms of profit potential — the only difference is how the position is collateralized and the capital efficiency of the trade.

Max Loss

(Strike × 100) − premium received, if the stock falls to zero. In practice, the main risk is a sharp decline in a concentrated position triggering a margin call before the trade has a chance to recover. Unlike the cash-secured put where you know you can absorb assignment, the naked put on margin can force an involuntary close at a large loss if margin requirements are breached.

Breakeven

Strike price minus the premium received per share. For example, selling a $100 put for $3.00 gives a breakeven of $97.00. Below $97.00 at expiration, the position shows a net loss. The premium received provides a buffer equal to the breakeven gap, but a large decline can overwhelm this cushion quickly.

Greeks Profile

Delta is positive — the short put gains as the stock rises and loses as the stock falls. Theta is positive — time passes in your favor, eroding the option's value if the stock remains above the strike. Vega is negative — a rise in implied volatility increases the put's value (against you), which often happens simultaneously with a stock decline, amplifying losses in adverse scenarios. Gamma is negative — as the stock approaches the strike, the delta increases in magnitude, accelerating losses on further declines.

Tips & Best Practices

1The primary risk versus a cash-secured put is margin calls — a sharp stock decline can force your broker to close the position at the worst possible time.
2Only trade naked puts on liquid, high-quality stocks with solid balance sheets — avoid speculative names where bankruptcy is a real risk.
3Keep individual position size small relative to account — a single naked put should represent no more than 5–10% of total buying power used.
4Use a mental stop-loss: if the stock falls to a level where you would not want assignment, buy the put back and exit rather than hoping for recovery.
5Monitor overall portfolio delta — holding multiple naked puts creates a leveraged long stock position that can lose significantly in a market downturn.
6Consider converting to a put spread if the position moves against you — buying a lower strike put turns the naked put into a defined-risk spread.
7Earnings events are the most dangerous time for naked puts — large overnight gaps below the strike can cause immediate, unrealizable losses.
8Understand your broker's specific margin call policy — some will force immediate closure; others give time to add margin or close voluntarily.

See it in action

Model a Naked Put with a real ticker. See the P&L chart, heatmap, and exact breakevens.

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