IV Shock Simulator
Stress-test dealer hedge flow by strike for a -5 to +5 vol-point repricing
IV Shock HeatmapTrigger ShiftStrike Flow Stress
Filter Stack
Symbol
NIFTY
Expiry
Date
ATM Anchor
Auto ATM
Follow latest spot
Strike Window
+/- 10 strikes
IV Shock
Volatility Trigger
Static from first snapshot
When enabled, trigger sweep uses the first timestamp of the selected session. Other charts keep current/live behavior.
Live Snapshot Context
Spot-
Lot Size (Charm only)50
Snapshots0
Backtest
Live Updates
Desk Snapshot
Current Desk State
Monitoring
Waiting for enough live structure to classify state quality.
Data Quality
11
Fragile confidence
Snapshot Age
-
No timestamp available from the latest option-chain snapshot.
Snapshot Cadence
-
Median spacing between visible snapshots
Strike Coverage
0%
Selected strikes inside active chain
Key Levels Board And Change Tape
| Level | Value | Gap | Gap % | Interpretation | Action Cue |
|---|
Spot Change: -
Waiting for another snapshot to compute change.
No option-chain snapshots were available for the current selection.
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Understanding IV Shock Simulator
This page asks a practical desk question: if implied volatility is hit or repriced higher right now, which strikes become the main hedging stress points? Instead of assuming the chain reacts linearly, the simulator re-computes vanna on shifted IV and then estimates strike-level flow stress. That makes it more useful around events, opening gaps, and expiry windows when volatility shocks can reshape the pressure map.
Core Ideas
Shock Ladder
The heatmap shows which strikes become dominant when IV gets hit or repriced higher in real time.Nonlinear Response
Vanna is recomputed on shifted IV, so the pressure map can change shape rather than just scale linearly.Execution Context
Use this to stress-test structural vulnerability, especially around events, opening gaps, and expiry afternoons.How To Read The Charts
IV Shock Matrix
What it shows: A heatmap of strike-level net flow stress under each shock scenario from -5 to +5 vol points.
How to use it: Scan for the strikes that stay dominant across many scenarios and the strikes that appear only under large positive or negative IV shocks. The first group marks structural pressure, the second marks event-sensitive pressure.
Watch for: Heatmap intensity is a modeled response, not a guaranteed hedge order. Real desks can offset risk using other options or futures.
Aggregate Response
What it shows: How total visible net flow and gross stress change as the shock magnitude changes.
How to use it: A steep slope means the book is highly sensitive to volatility repricing. That is often where execution quality deteriorates fastest after headlines.
Watch for: Large gross stress with low net flow means two-way hedging demand can still create intraday noise even if the net total looks small.
Selected Shock Profile
What it shows: CE, PE, and net flow at the currently selected shock so you can see exactly which strikes are driving the scenario.
How to use it: Use it to identify where spot may find friction, acceleration, or abrupt change in behavior once volatility reprices.
Watch for: If the strongest strike is far from spot, the scenario may be less actionable today than the headline number suggests.
Execution Playbook
Before an event
Use positive shock scenarios to map where the book becomes fragile if IV expands. This is especially useful before RBI, Fed, CPI, results, or expiry afternoon flows.
After the first volatility repricing
Move the slider to the observed shock and compare the new trigger with the baseline. A meaningful trigger shift can change the quality of continuation versus reversion trades.
When gross stress is high
Assume local instability can rise even if your directional view is right. Gross stress often means more two-way hedging and slippage risk.
When the shock response is flat
A flatter curve suggests the current structure is less sensitive to IV repricing and more dependent on outright spot movement or OI migration instead.
How Desks Use These Charts In Live Execution
Bracket realistic shocks
Anchor at observed IV move, then inspect one milder and one harsher scenario to understand sensitivity convexity.
Read structural vs event-sensitive strikes
Strikes persistent across shocks are structural. Strikes that light up only on extreme shocks are event-sensitive.
Track trigger displacement
When shock trigger shifts materially, adjust execution zones and avoid trading off stale trigger assumptions.
Use gross stress for slippage planning
High gross stress implies two-way hedge demand and potentially wider execution error even if net flow looks modest.
Industry Display Patterns Used Here
Scenario Ladder
Professional stress tools typically expose a fixed shock ladder so teams can compare baseline, moderate, and tail IV moves without changing chart scale each time.
Heatmap + Aggregate Pairing
A common layout is strike-level heatmap beside aggregate response. The heatmap shows where stress localizes; the curve shows whether the whole book becomes more fragile.
Trigger Displacement
Execution desks focus on how much the trigger migrates under shock, because trigger displacement can change which playbooks remain valid intraday.
Assumptions And Caveats
Research References
SSRN: Impact of Option Dealer Flows on Equity Returns
Supports the idea that dealer sensitivity can be strongly tied to implied-volatility changes, not only to spot.
Cboe: Evaluating the Market Impact of SPX 0DTE Options
Useful reminder that net risk, not headline volume alone, is what drives hedging relevance.
SSRN: Option Expected Hedging Demand
Shows why expected hedging demand from options information can carry market impact rather than being just descriptive noise.
Strategy intelligence
Continue your market analysis
Related strategy modules to validate the signal from another angle.
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