CME Outage: FX Market’s Futures Reliance Exposed, SNB Study Finds

A recent study by the Swiss National Bank (SNB) has revealed a significant dependency within the foreign exchange (FX) market on futures pricing and liquidity, particularly among non-bank market makers. The findings stem from an analysis of the disruption caused by the November 28, 2026, failure of a Chicago data centre that knocked out CME Group’s FX venues for approximately 11 hours.

The SNB’s research, published on February 24, 2026, demonstrates that currency pairs with actively traded CME futures contracts, and those primarily traded on CME-owned EBS Market, experienced the most substantial deterioration in market conditions during the outage. Bid-offer spreads widened considerably, highlighting the critical role futures play in price discovery.

Specifically, the EUR/USD pair saw spreads increase eightfold during the disruption. However, the impact was most pronounced for non-bank principal trading firms (PTFs), where spreads ballooned by nearly 30 times. This suggests these firms heavily rely on the price discovery and liquidity provided by CME futures contracts when their primary trading venues are unavailable.

The study underscores a vulnerability in the increasingly decentralized FX market structure, which is becoming more reliant on centralized infrastructure. CME Group, through its FX futures and options offerings, provides a central pool of liquidity and price transparency. These instruments are designed to offer capital and margin efficiencies and are centrally cleared to mitigate default risk. The company also promotes its FX Link, a cleared liquidity pool for spot-starting forwards.

The reliance on futures pricing wasn’t limited to spread widening. The SNB’s analysis indicates that the outage exposed a lack of resilience in the market’s ability to function effectively without the support of CME’s infrastructure. Non-bank market makers, in particular, appeared less equipped to navigate the disruption than those with more diversified access to liquidity sources.

This finding has implications for market participants and regulators alike. It suggests a need to assess the potential systemic risks associated with concentrated reliance on a single provider, even one as established as CME Group. The SNB’s report implicitly raises questions about the robustness of alternative trading venues and the need for improved contingency planning among non-bank market makers.

The November outage wasn’t isolated to FX markets, although the SNB study focused specifically on the FX implications. The broader disruption highlighted the interconnectedness of financial markets and the potential for cascading effects when critical infrastructure fails. While the SNB study doesn’t detail the impact on other asset classes, it serves as a reminder of the importance of operational resilience across the financial system.

The SNB’s research adds to a growing body of evidence highlighting the increasing importance of futures markets in the FX space. While spot markets remain the primary venue for FX trading, futures contracts play a crucial role in price discovery, risk management, and liquidity provision. The November outage served as a stark reminder of this role, and the SNB’s findings provide valuable insights for market participants and regulators seeking to enhance the resilience of the FX market.

The study’s release comes as market participants continue to grapple with evolving regulatory landscapes and increasing demands for transparency and efficiency. The findings are likely to fuel further debate about the optimal market structure for FX trading and the appropriate level of oversight for key infrastructure providers.