Why Is My Option Premium Falling?
Why option premium falls — theta, IV drop, OTM delta, and how to diagnose on the live chain.
Quick Answer
Premium falls from **theta**, **IV crush**, or **low delta OTM** strikes even when spot drifts your way slightly.
Diagnose in 60 Seconds
- Deep OTM + time passing
- IV down on chain
- Flat spot, low delta
- Writers defending at OI wall
- Expiry afternoon theta max
Check Live
Frequently Asked Questions
- Should I act on this answer alone?
- Use it as immediate context, then confirm on the live option chain and OI tools before sizing a trade.
Key Takeaways
- Premium = direction + IV + time.
- OTM buyers suffer most on slow days.
- Check IV before blaming manipulation.
Related Articles
- Theta: Time Decay in OptionsTheta erodes option premium daily — the hidden cost of buying Nifty and Bank Nifty options, especially in expiry week.
- IV Crush: When Volatility Collapses After EventsIV crush destroys option premium after events — why your correct direction trade can still lose on Nifty options.
- Option Premium Explained: Intrinsic + Extrinsic ValueWhat you pay per contract — intrinsic value, time value, and what erodes into expiry.