The Straddle Spikes page on StraddleChart highlights when the ATM straddle premium moves sharply over a short window. The percentages—10%, 30%, 50%, and 100%—describe how large that move is relative to a reference level (such as the straddle price at the start of the measurement window). This article explains what that means in practice and how traders often use the list.
What is a “straddle spike”?
A straddle spike occurs when the combined premium of the ATM Call and Put increases quickly. That can happen when implied volatility jumps, when the index makes a fast directional move, or when both occur. The spike list is a scanner-style view: it draws your attention to symbols where premium expanded meaningfully, so you can dig deeper on the Straddle Chart for that symbol.
What do 10%, 30%, 50%, and 100% mean?
These are magnitude bands for the move in straddle premium, not guaranteed profit or loss for any trade:
- 10% — A relatively modest but noticeable expansion; can flag early volatility or the start of a larger move.
- 30% — A stronger move; often worth checking news, index level, and whether the move is sustained or mean-reverting.
- 50% — A large short-term repricing; liquidity and bid-ask matter more; risk can increase quickly.
- 100% — Premium roughly doubled over the reference window; rare on quiet days; treat as high attention, not automatic direction.
Exact calculation details can depend on how the live feed defines the baseline and window; always confirm on your own charts and broker prices before trading.
How to use the live spike list
- Scan the list for NIFTY, BANKNIFTY, FINNIFTY, or other symbols you follow.
- Open the straddle chart for the same symbol and expiry to see context (time of day, trend, prior range).
- Check calendar risk: events and expiry can explain spikes; see Market Holidays and our expiry guide.
- Avoid over-trading: a spike is information, not a signal by itself.
Spikes vs your chart workflow
Spikes answer “who moved a lot, right now?” The straddle chart answers “how did premium evolve over the session?” Using both together is a common workflow: alert first, chart second.
Disclaimer
Spike data is for educational and informational use. Past or live premium behavior does not predict future results. Options involve substantial risk.
Summary
Straddle spike alerts flag rapid increases in ATM straddle premium at 10%, 30%, 50%, and 100% tiers. Use them to notice volatility and repricing quickly, then validate on the Straddle Chart and with your own risk rules. Open the live Straddle Spikes page to explore.