Stablecoin trading volume reaches an all-time high of $1.5 trillion in July, suggesting a potential resurgence for the Decentralized Finance sector.
In the dynamic world of cryptocurrency, stablecoins have emerged as a crucial component, particularly in the realm of decentralized finance (DeFi). As of mid-2025, USDC, Circle's digital dollar, has taken centre stage, becoming the dominant force in DeFi stablecoin transactions.
USDC's growth can be attributed to its 1:1 fully-backed reserve model, transparency through frequent audits, and strong regulatory compliance. These factors have made USDC a favoured choice among institutional and risk-aware users in DeFi and cross-border payments. As a result, USDC consistently accounts for 40% to 48% of total DeFi stablecoin transaction volume, marking a significant shift favouring USDC in decentralized finance usage.
In contrast, USDT, the largest stablecoin by supply, retains its dominance in overall supply and global trading liquidity. However, its reserves include unorthodox assets like bitcoin and precious metals, causing regulatory and institutional caution, particularly among US-based financial institutions. Despite this, many in the industry continue to use USDT due to its scale and liquidity advantages.
The recent passage of the U.S. GENIUS Act has officially regulated fiat-pegged digital tokens, further emphasizing the importance of transparency and regulatory compliance in the stablecoin market.
The stablecoin market is dominated by USDT and USDC, with these two digital assets making up about 90% of the stablecoin market cap. USDT remains dominant by supply, with a market cap of approximately $164.7 billion and about 61.41% market dominance. USDC, on the other hand, has a market cap exceeding $60 billion, significantly smaller than USDT but rapidly growing, especially due to institutional demand.
The surge in stablecoin activity continues a strong uptrend that began earlier in the year. In just the first five days of August 2025, on-chain stablecoin transactions have generated nearly $200 billion in volume. This surge in stablecoin activity is attributed to Ethereum's strong performance and rising price, as well as increased adoption for on-chain transactions.
MakerDAO's DAI accounts for 17-33% of the volume, making it a close second to USDC. USDT's on-chain demand on Aave has surged by 123% this year, reaching nearly $7.5 billion.
The on-chain volume of stablecoins reached over $1.5 trillion in July 2025, the highest monthly figure ever. This growth is a testament to the increasing role of stablecoins in DeFi's revival.
In summary, USDC leads in on-chain activity and DeFi dominance, driven by transparency and regulatory confidence, whereas USDT holds the largest market share by overall supply and liquidity, maintaining a crucial position in trading and global transactions but showing relatively weaker DeFi on-chain growth and institutional preference. This dynamic reflects a bifurcation in stablecoin use cases within DeFi and the broader crypto ecosystem.
Meanwhile, Circle is pushing ahead with growth plans, aiming to secure up to $624 million through a public offering. As the DeFi Total Value Locked (TVL) has reached a three-year high of $179 billion, it seems that the future of USDC and the stablecoin market is promising.
- Despite USDT's dominance in overall supply and global trading liquidity, USDC's growth in the decentralized finance (DeFi) sector is significant, accounting for 40% to 48% of total DeFi stablecoin transaction volume.
- The stablecoin market's predominant players are USDT and USDC, with these two digital assets constituting approximately 90% of the stablecoin market cap.
- In the realm of DeFi, user preference for stablecoins like USDC can be linked to its 1:1 fully-backed reserve model, transparency through frequent audits, and strong regulatory compliance.
- USDT's rise in on-chain demand on platforms like Aave has increased by 123% this year, reaching nearly $7.5 billion, demonstrating continued interest in this stablecoin.
- As the decentralized finance (DeFi) Total Value Locked (TVL) reaches a three-year high of $179 billion, Circle's USDC is poised for growth having announced plans to secure up to $624 million through a public offering.
- The US SEC's GENIUS Act, which regulates fiat-pegged digital tokens, has highlighted the importance of transparency and regulatory compliance in the stablecoin market, reinforcing the critical role of technology and innovation in crypto finance.
