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Circle’s USD Coin (USDC) has officially unseated Tether’s USDT in transfer volume for the first time in seven years. The shift marks a defining moment for digital assets, cleanly splitting stablecoin leadership into two distinct categories: total supply and transactional velocity.

While Tether remains the undisputed heavyweight in the stablecoin market, USDC has become the primary lubricant for the actual movement of capital across the cryptocurrency ecosystem.

USDC supply surged 8% in a month, tightening Circle’s challenge to Tether’s long-held stablecoin dominance.

According to a recent research note from Mizuho, USDC accounted for 64% of the transfer volume between the two major stablecoins.

That translates to roughly $2.2 trillion in adjusted transaction volume for USDC, compared to $1.3 trillion for USDT. Mizuho noted this is the first time since 2019 that USDC has led by this metric.

The gap became impossible to ignore in February. Data compiled by Allium pegged total stablecoin transfer volume at $1.8 trillion for the month. Within that pool, USDC was responsible for approximately $1.26 trillion, while USDT accounted for just $514 billion.

Yet the broader market's supply structure continues to heavily favor Tether.

CryptoSlate's data shows that USDT has a massive $184 billion in total market capitalization, while USDC's supply is at roughly $79 billion. By those figures, the circulating supply of USDT remains 2.36 times that of USDC.

This stark divergence between dormant supply and active transfer volume has become the defining feature of the current market. It also highlights the growing importance of underlying settlement rails.

Mizuho researchers attributed the transfer flip to significantly faster on-chain usage, noting that adjusted stablecoin volumes grew more than 90% year-over-year. According to the firm, transaction velocity is increasing rapidly, signaling that stablecoins are changing hands more frequently across a much wider array of financial workflows.

While Circle issues USDC natively across 30 different blockchains, one network sits at the undeniable center of this newfound velocity.

By the numbers, the Solana blockchain provides the clearest link between the rising USDC transfer totals and the underlying market structure that demands constant, repeated movement.

Data from Grayscale illustrates the sheer scale of this activity. Solana processed a staggering $650 billion in stablecoin transactions in February, more than doubling its previous record and leading all competing blockchains for the month.

What makes that headline number remarkable is the relatively small base of capital parked on the network, a dynamic that points to extreme asset turnover.

According to DeFiLlama, the entire stablecoin base on Solana sits at a modest $15.7 billion. USDC represents 53.81% of that local liquidity pool, amounting to roughly $8.4 billion. Outside of Ethereum, where USDC maintains a massive $55 billion supply, Solana is the network with the token's largest absolute presence.

The intensity of USDC circulation on Solana is unprecedented. Token Terminal reported that monthly USDC transfer volume on the network skyrocketed 300% year-over-year, hitting $880 billion in February 2026 alone.

These figures describe a blockchain architecture specifically optimized for repeated, high-speed settlement. Token Terminal also noted that Solana’s median transaction fee fell to a one-year low of $0.00047 during the same period.

The new record comes amid the AI-related memecoin trading, prompting Solana to dominate daily trading volumes for 13 days straight.

Indeed, ultra-low fees naturally support frequent routing, algorithmic rebalancing, and complex settlement strategies between market makers and trading venues throughout the trading day.

Meanwhile, it is worth noting that USDC transfer activity also surged on its largest home base. Token Terminal data showed monthly USDC transfer volume on Ethereum surpassed $1.7 trillion in February, reflecting a 250% year-over-year increase.

Essentially, the complete flow picture clearly spans multiple networks. However, the data coming out of Solana is drawing immediate industry attention because it puts stationary balances and hyper-active movement into the same frame.

This is because a relatively small pool of stablecoins is generating a torrent of transfers, which perfectly explains how USDC built a commanding lead in volume without coming close to matching Tether’s footprint in total supply.

The spike in Solana transfer volume coincides with a fundamental change in what is actually driving activity on the network’s decentralized exchanges.

In late 2024 and early 2025, memecoins were the dominant force. Data from Blockworks shows that highly speculative tokens accounted for more than 60% of all decentralized exchange activity on Solana during that window.

That retail-driven surge pushed trading volumes to record highs, briefly doubling those on Ethereum.

Kalshi and Polymarket just had their biggest month ever as Solana's memecoin share fell to cycle lows. We chart the flows and test the rotation thesis.

More recently, the landscape has matured. Blockworks data now indicates that stablecoin-related swaps have taken over, accounting for about 70% of all blockchain activity on the network.

This structural shift perfectly aligns with the February stablecoin transaction records tracked by Grayscale and the massive jump in USDC transfer volume tracked by Token Terminal.

This change in composition has massive implications for how transfer volume accumulates.

Workflows that rely heavily on stablecoins tend to involve repeated transfers among a web of intermediaries. Trading flows routinely split across multiple legs to find the best available price. Every single hop between exchanges, market makers, hedge funds, and payment applications adds to the aggregate transfer totals as balances relentlessly rotate.

Because Solana’s median transaction fee is practically zero, these microscopic, multi-step routing strategies can scale without eating into profit margins.

Meanwhile, the blockchain technology is only half the story. Policy shifts and platform rules have heavily influenced stablecoin routing over the last year, particularly for institutions operating under strict compliance frameworks in the United States and Europe.

The United States permanently altered the landscape in July 2025 by enacting the GENIUS Act, which established a comprehensive federal framework for payment stablecoins. Across the Atlantic, Circle secured a highly coveted Markets in Crypto-Assets license in Europe in January 2025.

Those regulatory milestones had immediate market consequences. Binance and other leading crypto trading platforms delisted all non-compliant stablecoin pairs, specifically targeting USDT, before March 31, 2025.

Since then, Tether's USDT trading access on some of the world's largest exchanges was severely curtailed within the European bloc. This compliance moat naturally redirected a massive portion of European exchange flow toward regulated alternatives like USDC.

Traditional payment infrastructure has also deeply intersected with the USDC and Solana routing ecosystem.

In December, Visa announced that its United States issuer and acquirer partners had begun settling fiat obligations in Circle’s USDC directly over the Solana blockchain. Initial participants included Cross River Bank and Lead Bank, with a broader domestic rollout scheduled throughout 2026.

Circle is simultaneously pushing a major cross-border expansion to strengthen its institutional plumbing.

The company is actively scaling the Circle Payments Network, a system that allows traditional financial institutions to send USDC internationally and convert it directly into local fiat currencies via banking partners. The network currently boasts 55 institutional members and reached $6 billion in volume this year.

These developments present why the USDC competitive signal flashing in the 2026 data is undeniable. It shows that stablecoin dominance is no longer a single-variable equation, and that the market now measures success through two metrics that can, and clearly do, diverge for extended periods.

The post Tether still holds more cash, but Circle’s USDC is now moving more of crypto’s money appeared first on CryptoSlate.

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