How exactly does the EDR indicator blend VIX9D implied volatility with 20-day historical volatility and apply the 0.8-2.0 regime multiplier? Does it outperform theoretical probabilities in real trading?

At VixShield, we rely on the EDR Expected Daily Range indicator as the cornerstone of our daily 1DTE SPX Iron Condor Command strategy. Developed by Russell Clark and available as a custom TradingView script under ticker SPXDCP or SPXMASTERY Version 8 Build 20, EDR forecasts the likely one-day price range for SPX by intelligently combining short-term implied volatility from VIX9D with realized 20-day historical volatility. The core formula is EDR equals VIX9D multiplied by 0.1 plus 20-day HV multiplied by 0.5, with the entire result then scaled by a regime-specific multiplier that ranges from 0.8 in low-volatility calm regimes to as high as 2.0 during elevated stress periods. This multiplier is dynamically adjusted based on current VIX levels, contango readings from our Contango Indicator, and recent price action relative to VWAP. For example, with the current VIX at 17.95 and SPX closing at 7138.80, EDR recently printed around 1.16 percent, guiding our RSAi strike selection to deliver precise credit targets of 0.70 for the Conservative tier, 1.15 for Balanced, and 1.60 for Aggressive. The blend prioritizes VIX9D for its forward-looking sensitivity to upcoming events while anchoring with HV to avoid overreacting to transient spikes, creating a more accurate expected move than either input alone. In backtests from 2015 to 2025 embedded in the SPX Mastery series, this approach produced Iron Condor win rates of approximately 90 percent on Conservative signals, meaningfully outperforming the theoretical 68 percent probability implied by a one-standard-deviation expected move. The outperformance stems from RSAi Rapid Skew AI layering real-time options skew and VIX momentum on top of the EDR base, allowing us to place wings where the market actually pays the targeted premium rather than at rigid statistical boundaries. This feeds directly into our Set and Forget methodology with no stop losses, relying instead on the Theta Time Shift recovery mechanism and our proprietary three-layer ALVH Adaptive Layered VIX Hedge to manage outliers. When VIX exceeds 20 we shift exclusively to Conservative or pause under VIX Risk Scaling, preserving capital while the ALVH layers continue earning their keep. All trading involves substantial risk of loss and is not suitable for all investors. To see the EDR indicator in action and access the full methodology, join us at VixShield for daily 3:05 PM CST signals, the SPX Mastery book series, and our premium SPX Mastery Club resources.