Stablecoin Liquidity Fragmentation Mimics Traditional FX Markets, Eco CEO Warns

The promise of seamless dollar movement via stablecoins is being challenged by structural fragmentation, according to Ryne Saxe, CEO of stablecoin infrastructure firm Eco. Saxe argues that stablecoins currently operate more like a fragmented foreign exchange market than a unified asset class, where liquidity is spread across disparate blockchains and pools. With a total market capitalization exceeding $320 billion—dominated by Tether (USDT) and Circle (USDC)—stablecoins have become essential for institutional treasury management and cross-border payments. However, because liquidity is split across multiple issuers and decentralized finance (DeFi) venues, the assets are not fully fungible, creating pricing gaps and execution hurdles. These inefficiencies are most pronounced for large-scale transactions. While retail users may not notice the friction, institutional trades of $10 million or more can significantly move the market. To avoid excessive slippage and transaction reversion, these firms must often break transactions into multiple branches and route them across different venues to converge at the destination. Supporting this view, a report from payments startup Borderless analyzed 66 stablecoin-to-fiat corridors across 33 currencies and seven blockchains. The data revealed that while USDC and USDT often trade similarly, provider-level pricing gaps in the same corridor could exceed hundreds of basis points, making execution quality heavily dependent on routing access. As more chains and stablecoin assets enter the ecosystem, Saxe warns that fragmentation will only increase. This structural reality forces institutions to treat stablecoins as distinct FX pairs rather than a single, liquid digital dollar.