Steff- OBX- DTA

OBX – US Open 15-Minute Zone Indicator

This indicator highlights the first 15 minutes of the U.S. stock market opening, also known as the OBX (Opening Balance Extension).
It is designed specifically for Nasdaq and S&P 500, which open at 09:30 New York time — corresponding to 15:30 Danish time.

What this indicator does:

• Marks the price range from 09:30–09:45 (U.S. time) as a zone on your chart
• Automatically adjusts to your local timezone, so the zone always aligns with Danish time
• Extends the zone to the right so you can track how price interacts with OBX throughout the day
• Draws all historical OBX zones so you can analyze previous reactions
• Rebuilds zones automatically when switching timeframes
• Detects breakouts from the zone
• Tracks balancing time only after a real breakout occurs
• Can automatically remove a zone if price spends a continuous amount of time inside it after the breakout (you set the minutes yourself)
• Allows full customization of OBX start time, duration, and behavior
• Individual zones can be manually deleted without being redrawn by the indicator

Why the OBX matters:

The OBX represents one of the most influential time windows in intraday trading because it reflects:
• The first injection of liquidity after the U.S. market opens
• Institutional positioning and algorithmic adjustments
• Early volatility and directional bias
• Common zones for reversals, breakouts, or mean reversion
• Key high-probability reaction levels used by professional traders

This indicator gives you a clear visual representation of when the market reacts to the U.S. open and how price interacts with the opening range throughout the session.