Stablecoin Market Crosses $320 Billion as Tether Dominance Falls and Societe Generale Goes Live on MetaMask

Content type: Data Roundup

The total stablecoin market capitalisation crossed $320 billion on April 16, 2026, setting a new all time high. Data from DeFiLlama shows $2.54 billion in net weekly inflows into stablecoin instruments. Tether retains its dominant position with $185.46 billion in circulation, but its market share has fallen from 60.46% to 57.96% since the start of 2026, a 2.5 percentage point decline that reflects the fastest erosion of USDT dominance since 2021. Meanwhile, Societe Generale’s EUR CoinVertible USD stablecoin went live for MetaMask users through a Consensys partnership, making a European bank’s stablecoin directly accessible to millions of self custody wallet holders.

The $320 Billion Milestone in Context

The stablecoin market took three years to grow from $100 billion to $200 billion. It took less than 12 months to grow from $200 billion to $320 billion. That acceleration reflects a structural shift in how stablecoins are used rather than speculative inflows. The $2.54 billion in weekly inflows is not coming from retail investors chasing yield. It is coming from institutional settlement flows, cross border remittance infrastructure, and the growing use of dollar denominated stablecoins as operational treasury instruments by companies operating in emerging markets.

The regulatory clarity emerging from the CLARITY Act negotiations and the SEC’s five part crypto taxonomy has directly accelerated institutional stablecoin adoption. When regulators establish clear frameworks, compliance teams at banks and corporations can green light stablecoin treasury operations that were previously blocked by legal uncertainty.

Tether’s Shrinking Lead

Tether’s 2.5 percentage point market share decline since January 2026 is the most significant structural shift in the stablecoin market in three years. At $185.46 billion, USDT is still larger than the next three stablecoins combined. But the direction of travel is clear.

The drivers of USDT share loss are several. Circle’s USDC has been gaining ground steadily, adding $431 million in the past seven days alone and now sitting at $78.621 billion. USDC’s growth is directly linked to its regulatory positioning: Circle operates under US money transmitter licenses and publishes monthly reserve attestations audited by Deloitte. As the GENIUS Act approaches implementation and licensed stablecoin issuer requirements become law, USDC’s compliance infrastructure becomes a competitive advantage.

New entrants including Ethena’s USDe, BlackRock’s BUIDL, and World Liberty Financial’s USD1 are also absorbing market share at the margins. None of these are close to challenging Tether or Circle individually, but collectively they represent the diversification of a market that was previously a two player race.

What Societe Generale on MetaMask Means

Societe Generale’s USD stablecoin becoming accessible through MetaMask is a quiet but significant development. MetaMask is the most widely used self custody Ethereum wallet, with tens of millions of active users globally. Until now, accessing a bank issued stablecoin required navigating institutional onboarding processes that were inaccessible to most retail participants.

The Consensys partnership changes that. A MetaMask user can now hold a Societe Generale issued dollar stablecoin directly in their personal wallet, with the same redemption rights and regulatory backing as a traditional bank product. This is the on ramp between traditional banking and decentralised finance becoming real at consumer scale. The SEC’s April 13 ruling that self hosted wallet interfaces are not broker dealers creates the legal basis for these products to operate without triggering securities registration requirements.

Circle Payments Network and the B2B Layer

Circle’s launch of Circle Payments Network Managed Payments is the institutional counterpart to Societe Generale’s consumer facing move. CPN Managed Payments allows banks and fintech companies to settle transactions in digital dollars without directly managing crypto assets. The bank or fintech integrates with Circle’s infrastructure through standard APIs. Circle handles the stablecoin mechanics on the backend. The client sees dollar settlement at near zero cost with near instant speed.

This product is targeting the $150 trillion global B2B payments market, where correspondent banking delays and fees are a well documented friction point. The value proposition is clear: same dollar outcome, faster settlement, lower cost, no crypto asset management required from the corporate treasury. As more banks adopt CPN infrastructure, the velocity of stablecoin settlement in the global financial system will increase substantially.

The GENIUS Act and FDIC Rulemaking

The FDIC’s April 7 approval of proposed rulemaking to implement GENIUS Act requirements adds regulatory structure to the stablecoin market at exactly the moment it is crossing $320 billion. The most significant proposed requirement is a two business day redemption standard: licensed stablecoin issuers must redeem tokens for dollars within two business days of a user request.

This standard protects retail users but also creates a new constraint on stablecoin reserve management. Issuers cannot lock reserves into illiquid instruments if they need to meet two day redemption windows. In practice, this means GENIUS Act compliant stablecoins will hold reserves primarily in T bills, overnight repo, and cash. That reserve composition will make compliant stablecoins among the most conservative short duration dollar instruments in existence, which is precisely the design intent. The Hyperbridge exploit that cost DeFi $2.5 million this week is a reminder of why reserve safety and regulatory oversight matter as crypto dollar instruments scale to hundreds of billions.

Where the Next $100 Billion Comes From

The stablecoin market reaching $320 billion has required institutional infrastructure, regulatory frameworks, and consumer on ramps that did not exist three years ago. The path to $400 billion and beyond runs through three channels: more corporate treasury adoption of stablecoins as operational cash instruments, deeper penetration into emerging market remittance flows where dollar denominated stablecoins compete directly with Western Union and similar services, and the growth of tokenised real world assets that require stablecoin settlement infrastructure.

The risk on rally pushing Bitcoin toward $76,000 this week also increases stablecoin demand indirectly. When Bitcoin prices rise, traders rotate out of stablecoins into BTC. When prices pull back, capital returns to stablecoins as a holding position. The stablecoin market grows on both sides of that cycle as more total capital enters the crypto ecosystem.

The TCB View

$320 billion in stablecoins is not a crypto metric anymore. It is a monetary infrastructure metric. When the FDIC is writing redemption rules, Societe Generale is plugging its bank stablecoin into MetaMask, and Circle is building B2B settlement rails for traditional banks, the instrument has changed categories. Stablecoins are not a DeFi curiosity. They are becoming the digital dollar layer of the global financial system. The $320 billion figure will look small in 18 months. The more important number to watch is not the total market cap but the daily settlement volume moving through stablecoin rails, which is already approaching the volume of some mid size national payment networks. That is the signal that stablecoins have crossed from speculation infrastructure into financial infrastructure.