First Presented FVG

Summary: First Presented FVG Indicator

This is a

Pine Script v6

TradingView indicator that identifies and visualizes the first Fair Value Gap (FVG) that forms within configurable time windows during a trading session.

What it Does
1. Detects FVGs: Uses the classic 3-candle FVG definition:
- Bullish FVG: When low[0] > high[2] (gap up)
- Bearish FVG: When high[0] < low[2] (gap down)
2. "First Presented" Logic: For each configured time slot, it captures only the first qualifying FVG that forms—subsequent FVGs in that window are ignored.
3. Visual Display:
- Draws a colored box spanning from detection time to session end
- Optional text label showing detection time (e.g., "9:38 Tue FP FVG")
- Optional grade lines at 25%, 50%, and 75% levels within the FVG

Key Configuration
Setting Description
Timeframe Only works on 5-minute charts or lower
Timezone IANA timezone for session times (default: America/New_York)
Session Futures trading hours (default: 1800-1715)
Min FVG Size Minimum gap size in ticks to qualify
4 Time Slots Each with enable toggle, time window, and color

Default Time Slots

• Slot 1 (enabled): 09:30-10:30 — lime green
  
• Slot 2 (enabled): 13:30-14:30 — blue
  
• Slot 3 (disabled): 13:00-13:30 — teal
  
• Slot 4 (disabled): 14:15-14:45 — fuchsia
  

Technical Features

• Handles cross-midnight sessions correctly
  
• Resets all drawings at each new session
  
• Skips the first bar of each window to ensure valid 3-candle lookback
  
• Clamps slot windows to session boundaries