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The Expiry Day “Premium Decay Trap” – This Setup Can Save You!

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Hello Traders!
Thursday comes, volatility spikes, and suddenly your option premium starts vanishing. Sound familiar? That’s the Expiry Day Premium Decay Trap — a classic scenario where most option buyers get trapped, and smart option sellers quietly eat the premium. Today, I’ll share a simple setup to avoid this trap and trade expiry days smartly.

Why Expiry Days Are Dangerous for Buyers
  • Rapid Theta Decay: Time value melts fast, especially in the second half of the day.

  • False Breakouts Trap Buyers: Market shows breakout moves, only to reverse within minutes.

  • Low VIX + High OI = STUCK OPTIONS: When volatility is low and OI is high, premiums don’t expand even with movement.


The Safe Setup to Trade Expiry Days
  1. Step 1 – Wait for First 15-30 Min Candle to Form
    → Don’t rush in. Let price discovery settle.

  2. Step 2 – Mark High/Low & CPR Levels
    → Use those as breakout zones. Avoid trading inside a narrow range.

  3. Step 3 – Confirm with Option Chain
    → Entry only if there’s OI unwinding on one side and buildup on the other.

  4. Step 4 – Trade Near ATM Options (Avoid Deep OTM)
    → Only buy when there's a confirmed breakout with volume.

  5. Step 5 – Quick Entry, Quick Exit
    → No holding dreams. Exit at 30–40% move or when structure breaks.


Pro Tip for Sellers
  • Short Straddles/Strangles Work Best After 11:30 AM
    → Let direction settle, then start writing premiums once movement fades.

  • Always Use SL or Hedge Legs
    → One big move can wipe out entire profits — expiry day is not a gamble!


Rahul’s Tip
Don’t chase expiry moves. Let the market give you the setup — not your emotions. Entry after confirmation saves capital and confidence.

Conclusion
Expiry days are premium-eating monsters for careless buyers. But if you follow structure, watch OI, and stay quick on execution — you can still trade profitably and safely.

What’s your expiry day setup? Drop it in the comments and let’s grow together!

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