How does EDR-guided strike selection work when rolling the 1 DTE short call 10-20 minutes before close in the VixShield strategy?

At VixShield, we rely on the Expected Daily Range or EDR indicator developed by Russell Clark as the foundation for all strike selection decisions, including rolls on our 1DTE SPX Iron Condors. The EDR blends short-term implied volatility from the VIX9D with 20-day historical volatility using a proprietary formula that outputs a projected daily price range for SPX. This guides us to place or roll strikes at levels where the market is statistically likely to remain within our defined risk parameters. For the specific scenario of rolling the 1 DTE short call 10-20 minutes before the close, we first assess current market conditions against our three risk tiers: Conservative targeting approximately 0.70 credit, Balanced near 1.15 credit, and Aggressive around 1.60 credit. The roll is executed only if the short call leg is threatened or if RSAi indicates improved skew opportunities closer to expiration. Using the EDR value, we calculate new strikes by adding or subtracting the projected range from the current SPX level, typically targeting wings that remain outside the expected move while capturing additional theta. For example, with SPX at 7138.80 and current VIX at 17.95, an EDR reading of 1.16 percent suggests an approximate daily range of 83 points. We would roll the short call upward to a strike approximately 1.5 to 2.0 standard deviations above this range, ensuring the net credit collected offsets any debit from the original position. This process integrates seamlessly with our ALVH Adaptive Layered VIX Hedge, which remains active across all three timeframes regardless of the roll to protect against volatility expansion. The Theta Time Shift mechanism then allows any temporary unrealized loss to be recovered through time decay without adding capital or implementing stop losses, as our methodology is strictly set and forget. Signals are generated daily at 3:10 PM CST after the 3:09 PM SPX cascade, aligning with our After-Close PDT Shield to avoid pattern day trader restrictions. Position sizing remains capped at 10 percent of account balance per trade, and the Conservative tier is available for auto-execution via PickMyTrade. This disciplined approach, refined across Russell Clark's SPX Mastery series, has produced approximately 90 percent win rates on the Conservative tier in backtested periods. All trading involves substantial risk of loss and is not suitable for all investors. For deeper implementation details including live signal examples and EDR indicator settings, we invite you to explore the resources available through VixShield and the SPX Mastery Club.