Ethereum holds 54.1% of $300.3B stablecoin supply across 47 chains

Stablecoins now total $300.3 billion, spread across 47 blockchains. Ethereum holds 54.1% of that supply, and Tron holds 31.4%, according to figures shared on X.

Those two chains together account for more than 85% of all stablecoin supply. The remaining 45 networks share what is left.

The numbers, and the fine print

The total is a milestone. Stablecoins are crypto tokens built to track a fiat currency, usually the US dollar, and they now form a market worth roughly $300 billion. Research findings put total supply at an estimated $300.3 billion to $302 billion as of early to mid-October 2026.

Ethereum’s exact share depends on who is counting. Across data sources, its slice of supply ranged from 47.7% to 54.2% during the same period.

Stablecoin Beat, measuring as of October 19, 2026, put Ethereum at around 48.4% and Tron at 31.5%. Other readings place Tron at approximately 31.2% to 31.5% as of mid-October.

The quarterly trend is where the story gets sharper. During Q3 2026, Tron added about $5 billion in stablecoin supply. Over the same stretch, Ethereum shed around $4.9 billion.

Supply versus usage

Tron processed approximately 73% of stablecoin transfer volume in Q3 2026, according to the research findings. That figure is well ahead of Ethereum’s share of flows.

The issuer side is even more concentrated than the chain side. Tether’s USDT and Circle’s USDC together make up around 85% of total stablecoin supply as of October 2026.

Further down the table, the fragmentation is real but thin. Chains such as Solana and BNB Chain each capture only low-single-digit percentages of total supply.

What this means

For Ethereum, a roughly $4.9 billion decline in a single quarter is not a crisis for a network holding well over a hundred billion dollars in stablecoins. Still, losing supply while a rival gains a near-identical amount is the kind of trend that compounds if it continues for several quarters.

The data-source spread also matters for anyone citing Ethereum’s dominance. With readings from 47.7% to 54.2%, the safest framing is that Ethereum holds roughly half, and the exact figure depends on methodology.

For Tron, commanding about 73% of transfer volume while holding about 31% of supply means its stablecoins are working much harder per dollar.

Concentration at the issuer level is the other risk to track. With USDT and USDC holding around 85% of supply, any regulatory, operational, or reserve issue at either company would hit the whole market, regardless of which chain the tokens live on.

The metrics to watch next are straightforward. Watch whether Tron’s Q3 supply gains continue into the next quarter, whether Ethereum’s share stabilizes near the top of its reported range or drifts toward the bottom, and whether any third chain breaks out of the low single digits.