# Spark Launches Stablecoin FX Layer On Uniswap V4

> Spark launches a $150 million Uniswap v4 migration to build a programmable foreign exchange layer for stablecoins.

**Published by:** [ETH Daily](https://ethdaily.io/)
**Published on:** 2026-06-27
**Categories:** defi, stablecoins, uniswap
**URL:** https://ethdaily.io/spark-launches-stablecoin-fx-layer-on-uniswap-v4

## Content

Spark launched the Stablecoin FX Layer, a shared liquidity infrastructure built on Uniswap v4 that allows stablecoins to access shared liquidity. The FX layer is launching with approximately $150 million of liquidity across USDS/PYUSD and USDS/USDT stablecoin pools, with USDS serving as the primary quoting and settlement asset. The system coordinates capital using the DualPool hook within Spark's wider Shared Liquidity Layer (SLL). Governed by allocation frameworks defined by Spark, the hook enables programmable inventory management by allowing idle stablecoin assets to support other ecosystem strategies or return yield when not actively required for market trades. The moment capital is demanded for swap execution, the hook automatically recalls and deploys it back to the active Uniswap pools, narrowing the traditional drag between capital productivity and market depth. The solution aims to address the growing fragmentation amid multiple issuers. Rather than requiring individual issuers like PayPal or Ripple to bootstrap depth across multiple venues, the shared infrastructure lets networks route transactions through a unified, oracle-free liquidity layer managed at the protocol level. Future phases will allow additional fintechs to connect their native digital currencies directly into the shared pools. Disclaimer: Content is for informational and educational purposes only and does not constitute financial, investment, legal, or other professional advice. No representations or warranties are made as to accuracy, completeness, or timeliness. Use of this content is at your own risk, and you should consult a qualified professional before making decisions. No fiduciary or advisory relationship is created

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