I've been saying for months that the stablecoin market is the most important story in crypto right now, and fresh data from Visa's onchain analytics dashboard just gave me the numbers to back that up in a way I didn't expect.
Adjusted stablecoin transaction volume hit $1.79 trillion in June 2026 alone. That's a 63% jump from May's $1.1 trillion and a 125% increase from June 2025. The first half of 2026 totalled $8.82 trillion in adjusted volume, already more than the entire full year of 2024.
The stablecoin market is not just growing. It's accelerating.
The USDC vs USDT Story Is Being Rewritten
Here's the data point I find most compelling about where this market is heading. In 2020, Tether's USDT commanded nearly 90% of adjusted stablecoin transaction volume. Circle's USDC held less than 10%. By 2022, USDC had climbed to roughly 45%.
In the first half of 2026, USDC accounts for approximately 70% of adjusted transaction volume. USDT has dropped to around 25%.
That's a complete reversal of the market structure that existed just six years ago, and it's happening during a period when USDT's total market cap at $186 billion is still significantly larger than USDC's $74 billion. Volume share and market cap share are telling different stories, and I think the volume share is the more important indicator of where institutional adoption is actually concentrating.
Wall Street Is the Engine Behind This
The reason I'm not surprised by this data is what I've been watching happen on the institutional side all year. Standard Chartered and BNY both recently built new services around USDC rather than creating their own stablecoin infrastructure from scratch. That's a significant signal, major financial institutions choosing to build on Circle's existing rails rather than compete with them.
Every time a large bank integrates USDC into its payments, settlement, or treasury operations, it adds volume to USDC's adjusted transaction figures. That institutional adoption is what's driving the divergence between USDC and USDT in volume terms, not retail trading preference.
What the Full-Year Trajectory Looks Like
If the second half of 2026 maintains even half the pace of June's record month, total annual adjusted stablecoin volume will comfortably exceed the $10.8 trillion record set in 2025. Given the institutional momentum building behind USDC specifically, I think maintaining that pace is more likely than not.
The GENIUS Act, the U.S. stablecoin legislation currently working through Congress, would add regulatory clarity that could accelerate institutional adoption further. Every major bank that's been sitting on the sidelines waiting for legal certainty becomes a potential new volume contributor the moment that framework passes.
Stablecoins are no longer a crypto-native phenomenon. They're becoming the plumbing of global institutional finance. The $1.79 trillion June volume figure is the clearest evidence yet that the transition from crypto experiment to financial infrastructure is happening faster than even optimistic forecasts anticipated