CME Outage Highlights FX Market’s Reliance on Futures, SNB Study Finds

A recent study by the Swiss National Bank (SNB) revealed that the November 28, 2025, outage of CME Group’s foreign exchange venues exposed a significant dependency on futures pricing and liquidity, particularly among non-bank market makers. The disruption, lasting approximately 11 hours following a failure at a Chicago data center, underscored vulnerabilities in the increasingly centralized structure of the decentralized foreign exchange market.

Impact on Currency Pairs

The SNB’s research found 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. Specifically, spreads for the EUR/USD pair, a key benchmark in global currency markets, increased eightfold. Non-bank principal trading firms (PTFs) experienced even more dramatic spread increases, with spreads blowing out by nearly 30 times [2].

Dependence on Centralized Infrastructure

The findings highlight the extent to which non-bank market makers rely on the price discovery and liquidity provided by CME futures contracts when primary trading venues are unavailable. The SNB’s research suggests the outage exposed vulnerabilities in a decentralized market structure increasingly reliant on centralized infrastructure [2]. CME Group offers FX futures and options, providing a central pool of liquidity and price transparency [3].

CME Group’s Role in FX Markets

CME Group’s FX futures and options are designed to offer capital and margin efficiencies and are centrally cleared to virtually eliminate default risk [3]. The company also promotes its FX Link, a cleared liquidity pool for spot-starting forwards [3].

Broader Market Implications

The November outage wasn’t limited to FX markets, but the SNB study focused on the FX market’s response to the disruption. The study also noted that the incident highlighted the importance of robust infrastructure and contingency planning for financial market participants [1].

Key Takeaways

• The CME outage of November 28, 2025, revealed a significant reliance on futures pricing and liquidity within the FX market.
• Non-bank market makers were particularly affected, experiencing substantial widening of bid-offer spreads.
• The incident underscores the growing dependence of a decentralized market on centralized infrastructure.
• CME Group’s FX futures and options play a crucial role in providing liquidity and price transparency.

The SNB’s findings emphasize the need for continued monitoring of market infrastructure and the development of robust backup systems to mitigate the impact of future disruptions. As the FX market continues to evolve, understanding these dependencies will be critical for maintaining stability and efficiency.