The stablecoin market has set a new record - total sector capitalization reached $316 billion as of March 21, 2026, with the top five tokens controlling 89% of the market. But the biggest story of the season is that USDC has overtaken USDT in transaction volume for the first time since 2019, signaling a shift in the balance of power within the most critical segment of the crypto industry.
Stablecoin Market: $316 Billion and Growing
Total stablecoin capitalization added $124.9 million in the past week alone, reaching $316 billion. The five largest tokens control 89% of the sector, suggesting high market concentration. Specifically, the stablecoin sector continues to grow even because of bearish sentiment across the broader crypto market.
USDC Overtakes USDT in Volume - First Time Since 2019
The biggest shift of the season - USDC has surpassed USDT in transaction volume for the first time in six years. According to analysts at Mizuho, USDC's adjusted volume since the start of 2026 totaled $2.2 trillion, while USDT processed $1.3 trillion. This means USDC controls approximately 64% of active financial flows in the stablecoin sector.
In the past week alone, USDC accounted for roughly 70% of total stablecoin transfer volume, processing approximately $1.26 trillion, while USDT's share was around $514 billion. On the back of these data, Mizuho raised its price target for Circle shares.
Why USDC Is Growing
Several deep factors are driving this shift. First, regulatory clarity: recent legislative initiatives in the United States and updated banking guidelines have reduced uncertainty around stablecoin usage, encouraging financial institutions to move from experimentation to active implementation.
- Institutional adoption: banks and payment companies are choosing USDC for its full reserve transparency - 100% held in cash and short-term U.S. Treasury securities
- Growth on Solana: the Solana network has become a powerful driver of USDC volume, providing fast and cheap transactions for stablecoins
- Regulatory pressure on Tether: stricter reserve transparency requirements across jurisdictions create a competitive advantage for the fully audited USDC
USDT Retains Capitalization Dominance
Despite the change in volume leadership, Tether maintains a confident lead in total capitalization. USDT's $184 billion is more than double USDC's $80 billion. This shows that USDT remains the primary reserve asset for traders, while USDC is increasingly used for active financial operations.
For Ukrainian traders, USDT remains the primary tool for entering and exiting the crypto market. Those who regularly sell USDT for Ukrainian hryvnia may not notice the changes at a global level, as Tether retains dominant positions in the P2P segment thanks to deep liquidity and a wide network of exchangers.
The effect on the Crypto Market
The division of roles between USDT and USDC reflects the maturation of the stablecoin market. USDT functions as "digital cash reserves" - the primary means of storing value and liquidity on crypto exchanges. USDC is becoming the "digital payment rails" for institutional transfers, international settlements, and DeFi operations.
With the adoption of regulatory frameworks for stablecoins in the United States and Europe, this trend is likely to intensify. The total stablecoin market capitalization of $316 billion already exceeds the GDP of many countries, and the sector continues to grow steadily even as broader cryptocurrency prices decline.
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