Selling a put option without holding short shares or a protective long put. The seller collects premium but faces substantial downside risk if the stock drops significantly below the strike.
⚡ KEY TAKEAWAY: Functionally identical to a cash-secured put for margin purposes in Reg-T accounts. The only difference is intent — naked implies no desire to own the shares.
Why It Matters
The naked put is functionally identical to a cash-secured put in outcome — the difference is intent and margin treatment. Naked implies trading on margin without full cash backing. It's the same risk profile as a CSP but uses less capital, freeing margin for other trades.
How It Works
Sell a put without holding cash for the full strike × 100 value. Margin requirement is typically 20% of the underlying minus the OTM amount. If assigned, you must buy shares — the broker finances the remainder on margin. Same P&L as a CSP but more capital-efficient.
Example
SPY at $580. Sell $565 put. CSP cash requirement: $56,500. Naked put margin: ~$8,500 (Reg-T). Same $3.00 premium, same breakeven ($562), same assignment at $565. The naked put achieves 6.7x leverage — $300 premium on $8,500 margin vs $56,500 cash.
Common Mistakes
Treating the margin savings as free money. Leverage amplifies losses too. If SPY drops to $540, the CSP trader loses $2,200 from a $56,500 base (3.9%). The naked put trader loses $2,200 from an $8,500 base (25.9%). Same dollar loss, very different percentage impact.
Selling a put option without holding short shares or a protective long put. The seller collects premium but faces substantial downside risk if the stock drops significantly below the strike.
Why does Naked Put matter for premium sellers?
Functionally identical to a cash-secured put for margin purposes in Reg-T accounts. The only difference is intent — naked implies no desire to own the shares.
How does Naked Put work?
Sell a put without holding cash for the full strike × 100 value. Margin requirement is typically 20% of the underlying minus the OTM amount. If assigned, you must buy shares — the broker finances the remainder on margin. Same P&L as a CSP but more capital-efficient.
What are common mistakes with Naked Put?
Treating the margin savings as free money. Leverage amplifies losses too. If SPY drops to $540, the CSP trader loses $2,200 from a $56,500 base (3.9%). The naked put trader loses $2,200 from an $8,500 base (25.9%). Same dollar loss, very different percentage impact.
