Today Range Calculator

1. Indicator Name

Today (Today’s Volatility)

2. One-line Introduction

Displays real-time 30-day historical volatility (HV30) as a compact table on the chart, helping traders instantly assess market risk levels.

3. General Overview

Today ↑↓ is a lightweight informational widget that calculates and displays the 30-day Historical Volatility (HV30) of the asset in real time.
Using logarithmic returns over the past 30 periods, the script computes variance and then annualizes it to express volatility as a percentage (%) per year.
The result is shown in a clean 1x1 table cell, which can be positioned anywhere on the chart—top/bottom, left/right—depending on your preference.
This makes it easy to quickly evaluate whether the current market is high-risk (volatile) or stable, without cluttering the chart.
It’s especially useful for position sizing, risk management, volatility-based entry/exit decisions, and as a filter for breakout strategies.
Built with performance in mind, the script uses minimal system resources and can be used alongside any indicator or strategy without interference.

4. Key Advantages

📈 Real-time HV30 Display
Calculates and displays 30-day historical volatility using annualized log return variance.

📍 Custom Table Positioning
Place the volatility display in any corner of the chart for optimal visibility.

🧮 Accurate Log Return Calculation
Uses logarithmic returns to ensure precise volatility representation over time.

🎯 Quick Market Sentiment Read
Helps you determine at a glance whether the asset is in a calm or volatile environment.

🧼 Minimalist Design
Clean 1-cell table format keeps your chart readable and organized.

🚀 Ultra-Lightweight Script
Runs efficiently with negligible impact on chart performance.

📘 Indicator User Guide
📌 Basic Concept

Today ↑↓ calculates 30-day Historical Volatility (HV30) by analyzing the asset’s log returns over the past 30 bars.

The result is annualized and shown as a percentage to reflect volatility in standardized terms.

Useful for gauging risk levels and strategy suitability in current market conditions.

⚙️ Settings Explained

Table Position: Choose where the volatility table appears:

Top Left / Top Right / Bottom Left / Bottom Right

📈 High Volatility Example

HV30 > 50% indicates a volatile environment

Suggests wider stop-losses, cautious position sizing, or favoring breakout strategies

📉 Low Volatility Example

HV30 < 15% suggests a calm market or range-bound behavior

Useful as a signal for upcoming volatility expansions or breakout preparations

🧪 Recommended Use Cases

Position Sizing: Scale position size based on HV30 readings

Strategy Filter: Activate certain systems only when volatility meets predefined conditions

Breakout Timing: Identify low-volatility zones as potential breakout opportunities

🔒 Precautions

This indicator does not generate buy/sell signals; it is a volatility reference tool

HV thresholds vary across asset classes—adjust interpretation accordingly

Since HV30 is historical, it may lag during rapid market changes