Opening Range Box

This indicator, called the "Opening Range Box," is a visual tool that helps you track the start of key trading sessions like London and New York.

It does three main things:

Finds the Daily 'First Move': It automatically calculates the High and Low reached during the first 30 minutes (or whatever time you set) of each defined session.

Draws a Box: It immediately draws a colored, transparent box on your chart from the moment the session starts. This box acts as a clear reference for the session's initial boundaries.

Extends the Levels: After the initial 30 minutes are over, the box stops growing vertically (it locks in the OR High/Low) but continues to stretch out horizontally for the rest of the trading session. This allows you to easily see how the price reacts to the opening levels throughout the day.

In short: It visually highlights the most important price levels established at the very beginning of the major market sessions.