Crypto & Forex October 30, 2026 0 Comments

From Underdog to Market Leader: How USDC Skyrocketed from 10% to Dominating 56% of Euro-Paired Stablecoin Trading—And What It Means for Your Investments

Since December 2023, something curious has unfolded in the euro-paired stablecoin arena—USD Coin (USDC) skyrocketed from a modest 10% market share all the way up to a commanding 56% by October. Now, you might wonder, how did this digital asset pull off such a dramatic move amidst a $10 billion monthly trading volume that peaked and then tapered off in 2024? The answer lies partly in the regulatory shuffle called MiCA, which essentially pushed Tether (USDT) out of the euro markets, flipping the playing field and funneling more transactional juice into USDC’s veins.

Imagine the market like a grand chessboard — with MiCA acting as the chess master, strategically restricting USDT’s moves and urging players to lean into USDC instead. It’s not just a numbers game; trading depths in euro-paired USDC books are now 40% deeper than USDT’s, meaning big trades can happen with less market shake-up. That’s a game-changer for anyone converting euros into dollar-backed stablecoins. But here’s the kicker—despite USDT’s global supply being 2.5 times larger, the evolving regulatory backdrop is clearly shifting where the action happens in Europe.

So, what does all this mean for the future of stablecoins? Is regulation becoming the ultimate kingmaker in the crypto stablecoin battleground? And as these shifts take hold, who really carries the risk when giants stumble? Let’s dive in to unpack how MiCA is tilting power in Europe and why Ethereum’s Layer 2 networks doubling down on stablecoin holders might be the subplot you didn’t know you needed to watch.

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Since December 2023, USD Coin [USDC] has increased its market share of euro-paired stablecoin trade from 10% to 56% as of October.

While at the end of 2024, euro-paired stablecoin trade volume reached levels near $10 billion per month before declining in subsequent months.

As a result of MiCA restrictions on Tether [USDT], the number of transactions using USDC increased. This gave USDC an advantage as it pushed more trading activity toward USDC.

Julia Kovalchuk, Head of B2B Product at Paybis, a MiCA-licensed crypto and fiat infrastructure provider, told AMBCrypto in an exclusive interview,

After MiCA, USDC grew from about 21% to 75% of stablecoin volume among our payment-firm clients in a year. The US leans toward USDC too, while USDT still dominates trading and emerging markets. Winners are regional and split by use case – USDC is the default choice for enterprise payment companies, traditional-finance on-ramps, and regulated custody in both the EU and the US.

Specifically, since Tether had been denied access to euro markets, euro-paired USDC order books now have 40% more depth than those of USDT/EUR order books.

Therefore, larger euro-paired stablecoin trades were able to be executed without causing as much price movement.

This gives USDC an advantage for traders converting euros into dollar-backed stablecoins. Nevertheless, the global supply of USDT is 2.5 times larger than that of USDC.

The 56% level of euro-paired trading of USDC, however, indicates how regulation may be able to move trading activity and liquid assets from one stablecoin to another.

MiCA rules give USDC an edge over USDT in Europe

The shift in market leadership demonstrates a much broader trend of changes occurring in the European regulatory environment.

MiCA established a July 2026 deadline for all stablecoin issuers to obtain EU authorization and demonstrate they comply with reserve and supervision requirements.

Still, Tether’s USDT remains unauthorized. However, Circle received authorization via a French electronic-money license. In response to the regulations, Coinbase began restricting USDT trading for its European customers.

AMBCrypto asked Kovalchuk what compliance means in a world governed by MiCA-style regulations. She responded,

In Europe, liquidity is easy to find. A license takes years and costly legal work, so many smaller firms plug into licensed infrastructure like ours. The US GENIUS Act, Hong Kong’s Stablecoins Ordinance, and the UAE’s payment token rules point the same way.

Coinbase is also converting any outstanding amounts of non-compliant USDT for its European customers around the 30th of October. Meanwhile, the European Banking Authority designated USDC a significant e-money token in mid-October, bringing it under direct supervision.

Therefore, these regulations are also establishing a framework for how exchanges can service European users.

Ethereum stablecoin addresses surpass 300M

The Ethereum [ETH] stablecoin ecosystem has continued expanding, reaching over 300 million holder addresses. However, the fact that there are over 300 million holder addresses does not automatically mean that there are as many unique and active users.

Approximately three-quarters of these holders reside on layer two networks. This highlights the role that Layer 2 networks have played in increasing access to stablecoins.

When asked if stablecoin gains on Layer 2s translate to real adoption or just balances that flow back to L1, Kovalchuk noted,

Some of both. Part of L2 volume is still trading balances moving back to exchanges. The growth to watch is repeat use: payouts, merchant settlement, and payroll. Once the same businesses settle on L2 every week, that L2 has become a payment rail.

Lower fees associated with layer two networks make it cheaper for individuals to transfer funds using stablecoins. Increased levels of network usage may indicate that individuals are more likely to utilize the same stablecoin multiple times.

But if a few regulated issuers hold most of the market, who carries the risk when one fails? According to Julia,

Holders carry the risk, which is why MiCA’s reserve and redemption rules matter. Europe has moved from one dominant stablecoin to another, so concentration is worth watching. Businesses should ask their platform how many stablecoins it supports and how quickly it can switch if one is restricted.

Together, these trends could shape future competition between USDC and USDT. Ultimately, lasting leadership will depend on regulatory access, deep liquidity, and sustained user activity.

Final Summary

USDC reached 56% of euro-paired stablecoin trading as MiCA rules restricted USDT.
Ethereum surpassed 300 million stablecoin holder addresses, with Layer 2s accounting for 75%.