---
title: "VIX Overnight % Entry Settings"
description: "How to enter only if VIX moved a certain % overnight"
url: https://help.optionsautotrader.com/en/articles/169-vix-overnight-percent-entry-settings
collection: "Options Auto Trader 101"
updated: 2026-07-22
language: en
---

# VIX Overnight % Entry Settings

How to enter only if VIX moved a certain % overnight

The **VIX Overnight % Entry Settings** let you control when your bot enters a trade based on the **percentage change in the VIX from the prior day’s close to the current day’s open**. This gives you a way to filter trades depending on how volatility shifts **overnight** before the trading day begins.

## What Is Overnight VIX % Change?

-   **Overnight % Change** = (Opening VIX – Previous Close VIX) ÷ Previous Close VIX × 100
    
-   A positive value means volatility increased overnight.
    
-   A negative value means volatility decreased overnight.
    

This measurement captures volatility shocks that happen outside regular trading hours (such as earnings, news events, or global market moves).

## How the Settings Work

-   **Minimum %**: The bot will only trade if the overnight VIX change is **greater than or equal to** your set percentage.
    
-   **Maximum %**: The bot will only trade if the overnight VIX change is **less than or equal to** your set percentage.
    
-   **Both**: You can define a range so trades only happen when overnight volatility changes fall between your chosen values.
    

⚠ Percentages must be entered as follows.

-   2% = **2**
    
-   4% = 4
    
-   .75% = .75
    

## Example

1.  **Gap Risk Strategy**
    
    -   You want to trade only when volatility jumps overnight.
        
    -   Set **Minimum Overnight % = 4**.
        
    -   If VIX opens **4% higher or more** than yesterday’s close, your bot can enter.
        
2.  **Calm Open Strategy**
    
    -   Works best when markets open quietly.
        
    -   Set **Maximum Overnight % = 1**.
        
    -   If VIX opens **1% higher or less**, your bot can enter.
        

By combining both, you can ensure trades only fire when overnight volatility is within your preferred risk zone.

## Why This Matters

-   Filters trades based on **overnight volatility shocks**.
    
-   Keeps “calm market” strategies from firing after a big overnight gap.
    
-   Lets “high-volatility” strategies trigger only when risk conditions are right.
    

## Summary

-   VIX Overnight % = change from yesterday’s close to today’s open.
    
-   **Min %** ensures trades only enter when overnight volatility jumps enough.
    
-   **Max %** keeps trades out if volatility spikes too high.
    
-   Helps align your strategies with **pre-market volatility conditions**.