How exactly does Russell Clark's EDR indicator blend VIX9D implied volatility with 20-day historical volatility before applying the regime multiplier? Is it effective for 1DTE Iron Condor strike selection?

At VixShield, we rely on Russell Clark's Expected Daily Range (EDR) as the foundational tool for precise strike selection in our 1DTE SPX Iron Condor Command. The EDR blends short-term implied volatility from VIX9D with 20-day historical volatility through a weighted formula before a regime-specific multiplier is applied. Specifically, the core calculation is EDR equals (VIX9D multiplied by 0.1) plus (20-day HV multiplied by 0.5), with the resulting value then scaled by a multiplier ranging from 0.8 to 2.0 depending on the prevailing market regime. This creates a forward-looking daily range projection tailored to current conditions, typically expressed as a percentage such as 1.16 percent on recent days when SPX closed near 7138.80 and VIX held at 17.95. The VIX9D component captures immediate market expectations of movement over the next nine days, while the historical volatility tempers it with realized price behavior, preventing over-reliance on either alone. Once computed, the regime multiplier adjusts for factors like contango or backwardation as signaled by our Contango Indicator, ensuring strikes align with actual premium opportunities identified by RSAi. For our daily 1DTE Iron Condors, this EDR output directly informs the three risk tiers: Conservative targeting a 0.70 credit, Balanced at 1.15, and Aggressive seeking 1.60. With VIX at 17.95 below 20 and in a contango regime, all tiers remain available under our VIX Risk Scaling rules. Traders place these condors in the 15-minute post-close window after the 3:05 PM CST signal, using EDR-guided wings set approximately one standard deviation from the close to maximize theta capture while defining risk at entry. This approach has delivered approximately 90 percent win rates for the Conservative tier across backtested periods. The integration with our ALVH Adaptive Layered VIX Hedge further protects against spikes, as the EDR also triggers Temporal Theta Martingale rolls when exceeding 0.94 percent or when VIX surpasses 16. Far from a generic range tool, the EDR combined with RSAi ensures we harvest premium the market is actually willing to pay, turning the 1DTE structure into a consistent income engine without stop losses or active management. All trading involves substantial risk of loss and is not suitable for all investors. To master these mechanics and access our daily signals, explore the SPX Mastery resources and join VixShield for live implementation guidance.