Circle's $5B Plunge Highlights Risks in Stablecoin Regulation
By John Nada·Mar 27, 2026·4 min read
Circle's recent stock plunge highlights vulnerabilities in stablecoin regulation, as market analysts debate the implications of the CLARITY Act on USDC and its competitors.
Circle, the issuer of USD Coin (USDC) stablecoin, saw its stock plunge 20% this week, erasing $5 billion in market capitalization in its steepest intraday drop since going public. The sell-off happened on the same day Tether announced it had secured a ‘Big Four' accounting firm to undertake a full audit of USDT. According to Mario Stefanidis of research firm Artemis, the sell-off was triggered by leaked regulatory drafts and unexpected wallet freezes, sending trading volume surging to 56.4 million shares. This is nearly four times the stock's 90-day average.
Yet, as the dust settles, a growing chorus of market analysts and institutional investors is calling the market’s reaction a severe miscalculation, arguing that the underlying fundamentals for the USDC issuer have never been stronger. Circle's CRCL stock has posted a modest 3% recovery to $104 as of today's market open, reflecting a resilience that belies the initial panic. The immediate catalyst for the sell-off was the reported arrival of new draft language for the highly anticipated CLARITY Act, which would ban passive stablecoin yield. This means stablecoin users would be unable to earn rewards for simply holding a dollar-pegged token.
At the same time, exchanges and affiliated firms would be barred from offering yield, directly or indirectly, on stablecoin balances or through structures deemed economically equivalent to interest. According to reports, activity-linked incentives would still appear to survive under the proposal, with US financial regulators, including the SEC and the US Treasury, given time to define the regulations. The new text landed after a strong rally in Circle shares. The stock had climbed 170% from its February lows and had risen from $50 to $127 as investors responded to earnings, faster USDC growth, and optimism that regulated stablecoins would gain from tokenization, AI-linked payments, prediction markets, cross-border transfers, and 24/7 market structure.
At those levels, Circle was being valued for continued strength in reserve income, expanding adoption, and a smooth regulatory path. However, the revised CLARITY language challenged one of the assumptions supporting that setup, especially for investors who had linked USDC growth to exchanges and brokers' ability to offer deposit-like rewards on idle balances. Stefanidis said the market had repriced the entire stablecoin trade within hours. He highlighted that the draft exposed a business-model vulnerability, coming at a time when rates had already moved lower, and reserve yields were no longer offering the same support they had a year earlier.
According to him, the Fed's yield on reserves declined to 3.81% in the fourth quarter of 2025 from 4.49% a year earlier. This decline meant investors were already watching whether slower monetary support would weigh on reserve income before Washington’s latest draft added a new layer of uncertainty. Meanwhile, several analysts argued the market’s first reaction to CRCL overlooked how Circle actually makes money. Circle issues USDC, invests the reserves in short-duration US Treasurys and overnight repurchase agreements, and keeps the spread generated on those holdings.
In the fourth quarter of 2025, its reserve income rose 60% from a year earlier to $711 million, driven by a 97% increase in average USDC supply. Thus, its full-year 2025 revenue reached $2.7 billion, up 64%, while about 95.5% of revenue came from interest income on reserves. Given this, Bernstein analysts said CRCL stock investors should not conflate stablecoin issuers with distributors. In their view, the proposed rules are aimed at platforms that pass yield through to users, not at issuers such as Circle that earn on reserve assets and do not directly pay holders for simply keeping tokens in their wallets.
This differentiation is crucial for understanding the potential impact of regulatory changes on different players within the stablecoin ecosystem. Simon Dedic, managing partner of Moonrock Capital, argued that the draft could strengthen Circle’s model by preserving its ability to retain reserve yield while narrowing the scope for others to compete on aggressive yield offers. Meanwhile, exchanges like Coinbase, which pass on yield to their users, could face more immediate adjustments if the bill becomes law. The Brian Armstrong-led exchange currently offers a yield of around 3.5% on USDC balances and shares a significant portion of its reserve income with Circle.
Thus, a narrower path for deposit-style incentives could force distributors like Coinbase to rework reward programs, loyalty systems, or activity-linked payments. The sharp move in Circle shares came at a time when USDC’s underlying operating metrics were still pointing higher. Data from Artemis shows that USDC circulation reached about $81 billion in late March, up from $76 billion at the end of 2025. The asset's adjusted on-chain transaction volume totaled $6.8 trillion in the fourth quarter of 2025, more than double the level a year earlier.