Summary
Stablecoin infrastructure crossed a formal threshold this week, as a Federal Reserve governor added dollar-denominated digital assets to the central bank's research agenda and Kraken launched an institutional USDC lending facility in partnership with Maple Finance.
In parallel, modular lending continued its growth trajectory, with Aave V4 doubling deposits month over month, while a concentrated collateral position in a single Morpho vault resulted in an $18 million loss, contained by the protocol's isolated market design.
Stablecoin developments
Circle (USDC): Circle's USDC circulating supply is approximately $76 billion. On June 22nd, Federal Reserve Governor Christopher Waller included stablecoins in the Fed's official research agenda on the dollar's international role, describing USDC and similar assets as material factors in global dollar funding and payment infrastructure: the first formal research designation of this kind from the central bank.
Tether (USDT): Tether's circulating supply is approximately $186 billion, accounting for roughly 70% of the global stablecoin market. On June 24th, payments app Oobit integrated USDT with Brazil's Pix instant payment network, connecting the stablecoin to infrastructure used by 170 million people.
Maple Finance (syrupUSDC, syrupUSDT): Maple Finance carries $2.2 billion in TVL. syrupUSDC currently earns 5% APY, backed by Maple's institutional program of overcollateralized loans. On June 25th, Kraken and Maple launched an institutional onchain lending facility denominated in USDC, offering loans secured by Bitcoin and Ethereum collateral.
Sky Money (USDS): USDS circulating supply is approximately $10.6 billion. The Sky Savings Rate is 3.65% APY, set by Sky governance. sUSDS deposits exceed $6.4 billion.
Protocol developments
Aave: Aave's TVL is $12.4 billion. On June 24th, Aave V4 surpassed $200 million in deposits on Ethereum, doubling from approximately $100 million in May and growing roughly 8x from its starting point after the March 30th launch. V4 uses a Hub-and-Spoke architecture designed to reduce liquidity fragmentation across markets.
Morpho: Morpho holds $6.6 billion in TVL. On June 20th, the AlphaUSDC Delta V2 vault, curated by AlphaPing, faced an $18 million loss after the msY token collapsed 85%, pushing market utilization to 100%. Because Morpho uses isolated lending markets, the incident remained contained to the affected vault and did not spread to the broader protocol.
Lido Finance: stETH currently earns 2.6% APY. Lido Finance holds $14.3 billion in TVL. On June 23rd, following a DAO Snapshot vote, Lido revoked the canonical status of wstETH bridge endpoints on nine networks: zkSync Era, Mode, Scroll, Mantle, Swell, Zircuit, Soneium, Polygon PoS, and Lisk. The DAO cited sunset chain infrastructure, ecosystem strategy shifts, and consistently low TVL and DeFi integration as the basis for each revocation.
Spark: Spark holds $4.6 billion in TVL. On June 25th, Spark seeded $150 million in stablecoin liquidity into two Uniswap v4 pools on Ethereum, USDS/USDT and USDS/PYUSD, with USDS as the base asset in both. The deployment is the first phase of a Stablecoin FX Layer designed to give stablecoin issuers shared trading infrastructure rather than separate liquidity pools and market maker arrangements.
Hyperliquid: Hyperliquid holds $6.1 billion in TVL. On June 24th, Hyperliquid announced the sunset of USDH, its yield-sharing stablecoin, advising users to repay USDH borrows and swap to USDC. On June 25th, portfolio margin moved to beta with increased account limits and expanded eligible collateral to include Bitcoin and HYPE.
Build with Yield.xyz
Two of this week's most significant stories point to the same structural shift: USDC is consolidating as the default settlement currency for DeFi-native platforms. Hyperliquid's USDH sunset, the Kraken-Maple USDC lending facility, and the Federal Reserve's formal research interest in dollar-denominated stablecoins all reinforce that institutional-grade onchain dollar infrastructure is becoming standard infrastructure, not a niche experiment.
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