USDC Overtakes USDT in Transaction Volume as Stablecoin Market Passes $315 Billion
USDC surpassed USDT in adjusted transaction volume for the first time since 2019, according to a March 13 research note from Mizuho Securities, as the total stablecoin market crossed $315 billion in aggregate supply. The development is not simply a competitive footnote; it reflects a meaningful realignment in how institutional capital and payment flows are choosing to move through digital dollar infrastructure. Taken alongside Stanley Druckenmiller’s public endorsement of stablecoins as the likely backbone of global payments within a decade, the week’s data points form a coherent picture of a sector undergoing structural maturation rather than cyclical noise.
What the Mizuho Data Actually Shows
Mizuho analysts Dan Dolev and Alexander Jenkins compared year-to-date adjusted transaction volumes for the two dominant stablecoins and found USDC had processed approximately $2.2 trillion against USDT’s $1.3 trillion, giving Circle’s token a 64% share of volume between the two issuers. The bank defines adjusted volume as transactions involving centralized exchanges, decentralized exchanges, and other identifiable counterparties, filtering out wash-like activity to focus on transfers that represent genuine economic purpose: supplier payments, prediction market wagers, cross-venue capital movements, and similar flows.
That methodological choice matters. Raw on-chain transfer counts can be inflated by automated arbitrage loops, internal treasury operations, and protocol mechanics that do not represent end-user demand. By stripping those out, Mizuho’s figure gives a cleaner reading of where real utility is concentrated. On that basis, USDC has now reasserted itself as the dominant working currency within the stablecoin system, a position it last held before USDT extended its lead during the 2019 to 2025 period.
Mizuho simultaneously raised its price target for Circle’s NYSE-listed stock from $100 to $120, citing the volume data as a leading indicator of longer-term competitive positioning. The analysts were direct in their reasoning: the stablecoin that wins is the one embedded in everyday economic activity, not simply the one with the largest outstanding supply. That framing deserves serious weight. Supply figures measure stock; volume figures measure flow. In payments infrastructure, flow determines which rails become sticky and which are eventually displaced, as the history of card networks, ACH, and interbank messaging systems consistently demonstrates.
Bitcoin BTC$77,250.00▲1.50%
Ethereum ETH$2,109.21▲1.97%
Tether USDT$0.9990▲0.03%
BNB BNB$661.00▲1.72%
XRP XRP$1.35▲1.39%
USDC USDC$0.9997▼0.00%
Solana SOL$85.28▲1.61%
TRON TRX$0.3715▲1.98%
Figure Heloc FIGR_HELOC$1.03▲0.00%
Dogecoin DOGE$0.1022▲1.46%Tether’s Position Remains Substantial, but Growth Has Stalled
Tether’s USDT is not retreating in any dramatic sense. Its circulating supply of approximately $184 to $186 billion still dwarfs USDC’s $79 billion, a market-cap ratio of roughly 2.3 to 1. Tether’s latest quarterly disclosure confirmed reserve assets approaching $193 billion and US Treasury exposure of $141 billion, while new issuance during 2025 totalled nearly $50 billion. These are not the statistics of a business in distress.
The more instructive detail is that USDT supply remains approximately $3 billion below its December 2025 peak of roughly $187 billion. Over the same period, USDC’s market cap rose around 8% to reach a fresh all-time high near $79 billion. The divergence is modest in absolute terms but significant as a directional signal. When the broader stablecoin market is expanding, as it clearly is, the issuer losing marginal share is the one whose growth rate is decelerating relative to the sector baseline.
USDT’s structural advantages remain intact in specific corridors. Offshore trading venues, emerging-market exchange platforms, and users who want dollar exposure without relying on regulated banking infrastructure continue to favour Tether, partly for historical familiarity and partly because USDT operates with fewer jurisdictional constraints. Those use cases are large and durable. The question is not whether USDT disappears, but whether the next wave of institutional volume, regulated payments, and on-chain settlement accrues primarily to USDC.
Circle’s Broader Infrastructure Gains
The volume shift does not exist in isolation. Circle’s end-of-2025 financial statements showed USDC circulation reaching $75 billion, a 72% year-over-year increase, while Q4 on-chain transaction volume climbed to $12 trillion, up 247% from the prior year’s comparable period. Those are acceleration rates that indicate a network effect beginning to compound rather than simply growing linearly with market conditions.
Separately, Circle’s USYC tokenized Treasury fund recorded the largest weekly gain among the ten largest stablecoins by market capitalisation during the week ending March 14, rising 13.9%. USYC has now surpassed BlackRock’s BUIDL fund in size, reaching $2.2 billion as the tokenized Treasury market hit a record $11 billion. The convergence of stablecoin payment flows and tokenized yield products under a single issuer is strategically significant; it allows Circle to serve both the transactional and collateral functions that institutional participants require, reducing the friction of moving between cash equivalents and on-chain yield.
Druckenmiller’s Macro Framing
Stanley Druckenmiller’s comments, drawn from a Morgan Stanley interview recorded January 30 and released March 14, offer a macro-level validation that is difficult to dismiss given his track record. The founder of Duquesne Capital Management, which produced an average annual return of approximately 30% across 29 years without a single losing year, described blockchain and stablecoins as “incredibly useful in terms of productivity” and projected that payment systems would be predominantly stablecoin-based within 10 to 15 years, on grounds of speed and cost efficiency relative to traditional banking rails.
His commentary is not unconditional. Druckenmiller is explicit that his optimism concerns payment utility rather than cryptocurrency as a store of value. He described that latter proposition as a solution in search of a problem, and indicated a preference for gold as a long-duration savings instrument. That distinction is analytically useful. It frames stablecoins not as speculative assets but as infrastructure productivity improvements, which is precisely the investment thesis that regulated financial institutions and payment companies can act on without confronting the volatility and custody challenges of native crypto assets.
The practical expression of this view is already visible. Western Union, MoneyGram, and Zelle have each announced stablecoin-based settlement initiatives following the passage of the GENIUS Act in mid-2025, which established a regulatory framework for payment stablecoin issuers in the United States. Global stablecoin transaction value reached $33 trillion in 2025, a 72% increase from the prior year, according to Bloomberg data compiled by Artemis Analytics. USDC processed $18.3 trillion of that total against USDT’s $13.3 trillion, a split that aligns with the year-to-date Mizuho volume data and suggests the transaction share advantage is not a recent aberration.
Legislative Uncertainty Remains a Residual Risk
The regulatory environment is supportive but not yet settled. The CLARITY Act cleared the House but has stalled in the Senate, held up by unresolved questions around stablecoin yield distribution and tokenized securities classification. Senate Majority Leader John Thune indicated in mid-March that market structure legislation would not advance before April at the earliest. For Circle, which listed on the NYSE in June 2025, this creates modest uncertainty around the operating framework even as its commercial metrics improve. The Mizuho price target increase to $120 reflects confidence in the business trajectory, but the legislative overhang is a variable that institutional investors will continue to monitor closely.
The aggregate stablecoin market reaching $315 billion, a 440% increase from approximately $55 billion five years earlier, establishes the sector’s scale beyond reasonable dispute. The more consequential question now is compositional: which issuer’s infrastructure becomes the default path for capital entering and transiting the digital economy. The week’s data, taken as a whole, suggests that contest has moved into a new phase, one in which transaction velocity and institutional integration are proving more durable competitive moats than outstanding supply alone.
