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Coil Breaker | RSI Range Compression

3 881
Most RSI strategies fire off static 30/70 thresholds. Coil Breaker does something different: it treats RSI itself as a volatility asset and watches for its own trading range to contract to a multi-month low — a "coil" — before trading the breakout when it releases.

How it works:
  • Measures RSI's high-minus-low range over the last N bars and ranks it against its own history using a percentile score
  • When that range compresses into the bottom percentile (default 20%), RSI is flagged as "coiled" — oscillating tightly around 50, momentum dormant
  • A dynamic Bollinger-style channel is plotted directly around RSI so you can visually watch the coil tighten before it fires
  • Once a squeeze has been active recently, a breakout above/below the established coil band (not the still-forming one) triggers an entry
  • Direction is set by an EMA slope filter — the coil tells you something's coming, the EMA tells you which way
  • Optional ADX filter keeps you out of truly dead, directionless chop
  • ATR-based stop, fixed R-multiple target, and equity-percent risk sizing so every trade risks a constant dollar amount


Important — read before trading:
This is a breakout/momentum system, not a mean-reversion one, and it behaves accordingly: expect a low win rate (often 30–40%) alongside a high average win/loss ratio. Most coil breakouts fail or chop — you're paying for early entry with more false signals. The edge comes from asymmetric payoff (2R+ winners vs. 1R losers), not from being right often. Judge this strategy on profit factor and expectancy, not win rate. If a 60%+ win rate is what you're looking for, this isn't that system.

Tips:
  • Backtest coilLen, pctLen, and the percentile threshold across your specific instrument/timeframe — coil dynamics vary a lot between assets
  • Watch the equity curve shape, not just the total return — make sure gains aren't carried by one or two outlier trades
  • Works best on instruments/timeframes with genuine volatility cycles (expansion/contraction), not ultra-choppy or illiquid markets
  • Pair with higher-timeframe context if you want to filter out counter-trend coil breaks

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