Sui has completed a significant four-layer financial infrastructure upgrade in the first quarter of 2026, despite a 16% decline in the total value locked (TVL) across the DeFi market. The upgrades include the approval of ETFs, the launch of two stablecoin pathways, enhancements to margin trading infrastructure, and a developer incentive program. Since August 2025, Sui has processed over $1 trillion in stablecoin transfer volume, highlighting its focus on building robust financial infrastructure. In February 2026, SUI became the fifth cryptocurrency asset to receive SEC approval for a spot ETP in the U.S., joining mature assets like Bitcoin and Ethereum. This approval led to the launch of three SUI ETFs, offering diverse risk profiles and return expectations. The ETFs include Grayscale's GSUI and Canary Capital's SUIS, both featuring staking functionality, and 21Shares' TSUI, which provides pure spot exposure. Sui also launched two stablecoin products: suiUSDe, a synthetic dollar for DeFi users, and USDsui, targeting compliant payments and institutional settlements. Additionally, the introduction of DeepBook Margin, a composable DeFi infrastructure layer, enhances trading efficiency on the Sui blockchain. These developments position Sui to capture growth in the stablecoin market and expand its user base from crypto-native to traditional financial systems.