Afshin Previous Day Box (with Midline & Premarket Levels)

Description:





The Afshin Previous Day Box indicator automatically plots a visual box around the previous trading day’s high and low range on your Thinkorswim chart.



It includes:



Previous Day High – top of the box
Previous Day Low – bottom of the box
Premarket High and Low – plotted as thin lines to highlight early-session extremes
Midline (Center Line) – a dashed line drawn through the exact midpoint between the previous day’s high and low, giving a clear visual reference for market balance




This indicator helps traders:



Identify key support and resistance zones from the prior session
Measure how the current price interacts with the previous range (breakouts, reversals, etc.)
Quickly gauge market bias (above or below midline = bullish or bearish sentiment)










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Usage Tips:





Works best on intraday charts (1min–15min)
Use alongside VWAP, volume profile, or expected move indicators for additional confluence
The midline can serve as an intraday pivot reference
Premarket levels highlight early volatility zones useful for morning breakout strategies