persistable sclass StopLossJuicer extends AbstractJuicer {
  // How much loss we will accept
  // Can be positive (stop loss in profit) or negative (stop loss with actual loss)
  settable double stopLossLimit = -0.5;
  
  settable bool stopLossEnabled = true;
  
  // Reference threshold to calculate signal below 100%
  // (doesn't impact closing behavior)
  settable double startStopLossSignalAt;
  
  *(double *stopLossLimit) {}
  
  {
    onCalculatingCloseSignals(signals -> {
      // How close are we to our loss limit?
      if (stopLossEnabled && stopLossLimit > -infinity()) {
        var signal = new CloseSignal().createdBy(this).reason("Stop loss");
        if (juiceValue <= stopLossLimit)
          signal.strength(100);
        else {
          double startAt = max(startStopLossSignalAt, 0);
          if (startAt > stopLossLimit)
            signal.strength(doubleRatio(startAt-juiceValue, startAt-stopLossLimit)*100);
        }
        
        signals.add(signal);
      }
    });
  }
}

Began life as a copy of #1036353