How exactly does the EDR indicator combine VIX9D and 20-day historical volatility to determine daily Iron Condor wings?

At VixShield, we rely on the EDR Expected Daily Range indicator as the foundation for our daily 1DTE SPX Iron Condor strike selection. Developed by Russell Clark and refined across the SPX Mastery series, EDR blends short-term implied volatility from VIX9D with realized movement captured in 20-day historical volatility. The proprietary formula is EDR equals VIX9D multiplied by 0.1 plus 20-day HV multiplied by 0.5, then scaled by a regime-based multiplier between 0.8 and 2.0. This creates a forward-looking daily range projection that accounts for both what the options market is pricing and what price action has actually delivered. For example, with the current VIX at 17.95 and typical 20-day HV around 0.65 percent, EDR might output 1.16 percent on a neutral regime multiplier. On a SPX close of 7138.80 this translates to an expected daily move of approximately 83 points. RSAi then uses this range to recommend three risk-tiered wing placements. Conservative wings target a $0.70 credit and sit outside the full EDR projection for our documented 90 percent win rate. Balanced wings aim for $1.15 credit and align closer to one standard deviation, while Aggressive wings chase $1.60 credit by tightening to approximately 0.75 times EDR. This process occurs every trading day at 3:10 PM CST after the 3:09 PM SPX cascade, ensuring we remain in the After-Close PDT Shield window. The EDR output directly feeds our Iron Condor Command, allowing us to place defined-risk positions with no stop losses under our Set and Forget methodology. When volatility expands and EDR exceeds 0.94 percent or VIX moves above 16, the Temporal Theta Martingale and Temporal Vega Martingale recovery mechanics activate within the ALVH Adaptive Layered VIX Hedge framework. Our three-layer VIX call hedge in a 4/4/2 ratio per ten Iron Condor contracts continues to run regardless of VIX Risk Scaling, cutting drawdowns by 35 to 40 percent at an annual cost of only 1 to 2 percent of account value. Position sizing remains capped at 10 percent of total account balance per trade. All trading involves substantial risk of loss and is not suitable for all investors. To see the live EDR indicator in action and access the complete strike-selection workflow, join us inside the SPX Mastery Club at vixshield.com.