Ethereum Stablecoin Supply Declines: USDT Down 2.82%, USDC Down 2.86% Over 30 Days

USDT supply on Ethereum declined 2.82% to $78.99B over 30 days ending June 29, 2026, while USDC fell 2.86% to $47.84B.

Ethereum’s Stablecoins Barely Budged While DEX Volume Collapsed — That Gap Is the Story

Read the June 29, 2026 snapshot side by side and one number refuses to keep pace with the others. Stablecoin supply on Ethereum held: $154.61B in USD-pegged tokens, with USDT down 2.82% and USDC down 2.86% over 30 days. Trading throughput did not hold. DEX volume fell 58.19% across the same month. Dollars stayed on the chain; the appetite to move them did not.

USDT and USDC Moved Almost in Lockstep

USDT on Ethereum slipped from $81.28B on May 30, 2026 to $78.99B on June 29 — that 2.82% trim is shallow. USDC tracked it closely, easing from $49.25B to $47.84B, a 2.86% drop. Two of the largest dollar tokens on the network drained by nearly the same margin inside the same window, which reads as gradual redemption rather than an exit.

Neither asset surrendered its base on Ethereum. The chain still holds 42.66% of all USDT in circulation, $78.99B of a $185.14B cross-chain total. USDC sits even more concentrated here: $47.84B of the $73.79B total, or 64.84% of every USDC in existence.

The Activity Side Tells a Harsher Tale

Where supply held, usage gave way. DeFi TVL on Ethereum fell 10.31% over 30 days, from $41.74B to $37.44B as of June 29, 2026. That decline runs nearly four times steeper than the roughly 2.8% drop in either stablecoin, the first sign that capital parked on-chain and stopped working.

DEX volume makes the point sharper. Ethereum cleared $472.74M over the last 24 hours, 9.89% of the $4.78B traded across all chains. Set that daily figure against the 30-day trend of -58.19% and the picture resolves: liquidity is present, but it is sitting still.

Key Figures at a Glance

• Total USD-pegged stablecoin supply on Ethereum: $154.61B (as of June 29, 2026)
• USDT on Ethereum: $78.99B, down 2.82% over 30 days; 42.66% of global USDT supply
• USDC on Ethereum: $47.84B, down 2.86% over 30 days; 64.84% of global USDC supply
• Ethereum DeFi TVL: $37.44B, down 10.31% over 30 days
• Ethereum DEX volume (24h): $472.74M, down 58.19% over 30 days; 9.89% of all-chain DEX volume

Why It Matters

Stablecoin supply stands in for the liquidity an ecosystem can call on. When USDT and USDC both contract by roughly 2.8%, some capital is being redeemed off-chain or moved to other networks, but the pace is mild. The activity gauges are not mild. A 10.31% drop in DeFi TVL alongside a 58.19% slide in 30-day DEX volume says the slowdown is in how that money is used, far more than in whether it stays. With 64.84% of global USDC and 42.66% of global USDT still settled here, Ethereum keeps its position as the main home for dollar-denominated on-chain capital — even as that capital trades less. Watch whether the supply line starts following the volume line down; so far it hasn’t.

Disclaimer: Market data is informational only and not investment advice. Figures are accurate as of the stated dates and change continuously.

Featured illustration is AI-generated.

Frequently Asked Questions

Why did USDT and USDC supply decline on Ethereum?

USDT declined 2.82% to $78.99B and USDC fell 2.86% to $47.84B over 30 days ending June 29, 2026, suggesting gradual redemption of these assets rather than a rapid exit from the network.

Did the stablecoin decline match the drop in trading activity?

No; stablecoin supply fell only 2.8%, but DEX trading volume on Ethereum dropped 58.19% over the same 30-day period, indicating that liquidity remained on-chain but was used less actively.

What share of global USDT and USDC is held on Ethereum?

Ethereum holds 42.66% of all circulating USDT ($78.99B of $185.14B) and 64.84% of all circulating USDC ($47.84B of $73.79B) as of June 29, 2026.

How much did DeFi TVL on Ethereum decline?

DeFi Total Value Locked on Ethereum decreased 10.31% over 30 days, falling from $41.74B to $37.44B as of June 29, 2026, a steeper decline than stablecoin supply contraction.

Data & sources

Every figure in this article is pulled from live on-chain data and linked to its source and the date it was read.

• Total stablecoin supply on chain: $154.61B (as of 2026-06-29) — source [API]
• DeFi TVL: $37.44B (as of 2026-06-29) — source [API]
• DeFi TVL 30-day change: -10.31% (as of 2026-06-29) — source [API]
• DEX volume (24h): $472.74M (as of 2026-06-29) — source [API]
• DEX volume 30-day change: -58.19% (as of 2026-06-29) — source [API]
• Share of all DEX volume: +9.89% (as of 2026-06-29) — source [API]
• Stablecoin supply on chain: $78.99B (as of 2026-06-29) — source [API]
• Stablecoin 30-day supply change: -2.82% (as of 2026-06-29) — source [API]
• Stablecoin chain share: +42.66% (as of 2026-06-29) — source [API]
• Stablecoin supply on chain: $47.84B (as of 2026-06-29) — source [API]
• Stablecoin 30-day supply change: -2.86% (as of 2026-06-29) — source [API]
• Stablecoin chain share: +64.84% (as of 2026-06-29) — source [API]

Methodology: every figure above links to its live on-chain source (DeFiLlama, CoinGecko) and the date it was read; analysis by Blockchain Magazine. Informational only, not investment advice.