How effectively does the EDR Expected Daily Range, which blends VIX9D and 20-day historical volatility, predict the approximately 90 percent win rate observed in conservative SPX iron condors?

At VixShield, we rely on the EDR Expected Daily Range as the foundational tool for strike selection in our 1DTE SPX Iron Condor Command strategy. Developed by Russell Clark, the EDR blends short-term implied volatility from VIX9D with 20-day historical volatility using a proprietary formula that adjusts for market regime. This creates three tiered strike recommendations that align precisely with the credit targets for our Conservative, Balanced, and Aggressive setups. The Conservative tier, targeting a 0.70 credit, consistently achieves an approximate 90 percent win rate, or about 18 winning days out of 20 trading days, precisely because the EDR identifies ranges where the SPX is statistically likely to remain within our defined wings. Our backtests from 2015 to 2025 confirm this edge when combined with RSAi for real-time skew refinement. The EDR does not guarantee outcomes but provides a mathematically grounded projection that, when paired with our Set and Forget methodology, allows theta to work in our favor without intraday adjustments. During periods when VIX sits near the current level of 17.95, below its five-day moving average of 18.58, the EDR helps maintain all three tiers under our VIX Risk Scaling rules, favoring Conservative placement for maximum probability. This integration with the ALVH Adaptive Layered VIX Hedge further protects against outlier moves, cutting drawdowns by 35 to 40 percent at an annual cost of only 1 to 2 percent of account value. The Theta Time Shift mechanism then handles the rare losing trades by rolling threatened positions forward to capture vega expansion before rolling back on VWAP pullbacks, turning most setbacks into net positive outcomes without adding capital. Position sizing remains capped at 10 percent of account balance per trade, preserving capital through defined risk at entry. In practice, when the EDR forecasts a 1.16 percent daily range on an SPX near 7138.80, our Conservative wings are placed to capture a probability envelope that has historically delivered the targeted win rate. All trading involves substantial risk of loss and is not suitable for all investors. For deeper implementation details, including access to the EDR indicator and live signal examples, we invite you to explore the resources available through VixShield and the SPX Mastery series.