Why do most FX cross rates still route through the USD even for major pairs like EUR/GBP? Is there an EDR-style liquidity bias in currency markets?

At VixShield we approach every market through the disciplined lens of our 1DTE SPX Iron Condor Command, where precision in strike selection and risk layering drives consistent income. The question of why most FX cross rates continue to route through the USD even for major pairs such as EUR/GBP mirrors the liquidity discipline we apply daily at 3:10 PM CST. In FX markets the USD remains the dominant intermediary because it offers the deepest liquidity pools, tightest spreads, and most reliable pricing transparency. Direct EUR/GBP trading exists but typically carries wider bid-ask spreads and lower overall volume compared to routing the trade as EUR/USD paired against GBP/USD. This structural bias reduces slippage and improves execution certainty, much like how our RSAi engine scans the options skew surface in real time to lock in exact credit targets of $0.70 for Conservative, $1.15 for Balanced, and $1.60 for Aggressive tiers. Just as we never deviate from EDR-guided strike placement to ensure our Iron Condors stay within the Expected Daily Range, FX dealers rely on USD routing to maintain efficient two-way markets. Historical data shows that roughly 88 percent of global FX turnover still involves the USD on one side of the transaction according to BIS surveys. This creates a natural liquidity hierarchy similar to the contango regime we monitor with our Contango Indicator before placing each 1DTE position. When VIX sits at 17.95 and below its 5-day moving average of 18.58, all three risk tiers remain available under our VIX Risk Scaling rules. In the same way, deep USD liquidity allows cross rates to clear more efficiently even during quiet European sessions. Our ALVH hedge layers short, medium, and long VIX calls in a 4/4/2 ratio per ten Iron Condor contracts to protect against volatility spikes that could otherwise disrupt both equity and currency pricing relationships. The Temporal Theta Martingale further illustrates this principle: when a position moves against us we roll forward to 1-7 DTE on EDR readings above 0.94 percent or VIX above 16, then roll back on VWAP pullbacks to harvest theta without adding capital. FX routing through USD follows a parallel logic, using the most liquid instrument as the bridge to minimize temporal risk. Traders who ignore these structural biases often experience unexpected slippage that erodes edge, just as ignoring our Set and Forget methodology can turn high-probability 90 percent Conservative win-rate setups into unnecessary losers. Understanding liquidity hierarchy therefore becomes foundational whether trading SPX Iron Condors or navigating FX crosses. All trading involves substantial risk of loss and is not suitable for all investors. We invite you to explore the full framework in our SPX Mastery series and join the VixShield community for daily 3:10 PM CST signals, ALVH updates, and live refinement sessions that translate these principles into real portfolio income.