Unreached Highs/Lows Oscillator
By LuxAlgoJan 21, 2026
The Unreached Highs/Lows Oscillator measures how much unfinished business the market leaves behind. It counts the percentage of recent highs and lows that price has never revisited, plotting unreached lows in green and unreached highs in red on a normalized 0-100 scale. Strong trends abandon their levels (an advancing market accumulates untouched lows, a declining one untouched highs), so the two lines become a running gauge of directional control and of the balance between buyers and sellers.
How to Trade the Unreached Highs/Lows Oscillator?
- Green above 80 with red below 20: sustained buying pressure, bullish trend confirmation.
- Red above 80 with green below 20: sellers in control, bearish alignment.
- Both lines around 50: a ranging market that keeps revisiting its own levels.
- Dip from above 80 toward 50: a pullback within the trend rather than a full reversal.
- Rapid collapse in either line: price is aggressively reclaiming prior swing highs and lows, momentum expansion or a shift in market structure.
For reversal hunting, tighten the default 80/20 thresholds toward 100/0: simultaneous extreme readings on both sides have marked major turning points as well as minor rotations inside an existing trend.
Unreached Highs/Lows Oscillator Settings
- Length (default 20): the maximum number of highs and lows in the calculation; smaller values react faster, larger ones emphasize broader trends.
- Top/Bottom Threshold: level and color for each guide line, with an Auto option for default styling.
- Bullish / Bearish: colors for the unreached-lows and unreached-highs plots.
Frequently Asked Questions
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