How exactly does the EDR indicator blend VIX9D and 20-day historical volatility to determine iron condor wing strikes for 1DTE SPX trades?

At VixShield, we rely on the EDR Expected Daily Range indicator developed by Russell Clark as the cornerstone of our 1DTE SPX Iron Condor Command strategy. The EDR blends short-term implied volatility from VIX9D with realized 20-day historical volatility using a weighted formula that adapts to current market regimes. Specifically, the calculation begins with EDR equals VIX9D multiplied by 0.1 plus 20-day HV multiplied by 0.5, then applies a regime-based multiplier between 0.8 and 2.0. This produces a projected daily price range expressed as a percentage of the current SPX level. For example, with the current SPX close at 7138.80 and VIX at 17.95, the EDR might forecast a 1.16 percent daily range, which translates to roughly 83 points on either side of the closing price. RSAi then uses this EDR output along with real-time skew analysis and VWAP positioning to select the precise strikes that match our three credit tiers: Conservative targeting 0.70 credit with approximately 90 percent win rate, Balanced at 1.15 credit, and Aggressive at 1.60 credit. The wings are placed outside the EDR-derived range to create a defined-risk position that benefits from theta decay in our Set and Forget approach. This process occurs daily at 3:10 PM CST after the SPX close, avoiding PDT concerns through our After-Close PDT Shield timing. When volatility rises, as with the current VIX of 17.95 sitting below its five-day moving average of 18.58, the EDR naturally widens the projected range, prompting more conservative wing placement or activation of our ALVH Adaptive Layered VIX Hedge. The three-layer ALVH system with its 4/4/2 contract ratio across short, medium, and long VIX calls provides protection that has historically cut drawdowns by 35 to 40 percent during spikes. Our Temporal Theta Martingale recovery mechanism further ensures that any challenged positions can be rolled forward to capture vega expansion and rolled back on VWAP pullbacks without adding capital. This integration of EDR, RSAi, and ALVH forms the foundation of the Unlimited Cash System detailed across Russell Clark's SPX Mastery series. All trading involves substantial risk of loss and is not suitable for all investors. To master these mechanics and access our daily signals, visit VixShield.com and explore the SPX Mastery Club for live sessions and indicator access.