USDC shock: Circle posts worst day as bill may curb stablecoin yield

Shares of Circle Internet Group tumbled after lawmakers advanced draft language that could curb passive, interest-like rewards tied to stablecoins such as USDC, prompting one of the steepest intraday sell-offs for the name in recent sessions. Market participants moved quickly to price in regulatory risk, sending volatility higher across crypto-sensitive equities.

The immediate trigger was debate around the CLARITY Act and related proposals that seek to tighten how stablecoin yield and rewards are treated. While the GENIUS Act enacted in 2025 restricted issuers from directly paying interest, exchanges and intermediaries have continued to offer USDC “rewards” that mirror Treasury yields; the new draft would constrain those channels and potentially recharacterize such programs as prohibited. Circle’s business, which benefits from reserve-backed interest income tied to roughly $75 billion of USDC in circulation, is therefore seen as particularly exposed to such a shift.

Market data and company disclosures show the sensitivity: recent quarters have seen strong top-line growth driven by USDC flows, but reserve yield compression and any legal limits on reward distribution directly threaten that revenue stream. Traders reacted by reducing exposure to crypto platform names and to Circle in particular, amplifying price movements and raising concerns about short-term funding and liquidity dynamics in related DeFi and custodial products.

The episode fits into a broader regulatory tug-of-war between banking interests and crypto firms. Regulators and banks argue a broad prohibition is needed to prevent deposit-like products from siphoning retail funds away from the traditional banking system; crypto firms counter that third-party rewards are lawful competitive offerings crucial to user adoption. How Congress resolves these tensions will determine whether the current reward structures survive, are reshaped, or are effectively banned.

Analysts say uncertainty will persist until legislation is finalized and interpreted by regulators. In the near term, companies like Circle may accelerate efforts to diversify non-interest revenue and reduce reliance on yield spreads; in the medium term, the industry could see reconfiguration of distribution models, with exchanges, custodians and issuers renegotiating economics to adapt to new legal constraints. Investors will watch regulatory text closely as the key catalyst for the next phase of market repricing.