USDT nears Ethereum flippening as market cap gap drops below 1%

Tether's USDT stablecoin is within striking distance of Ethereum's market capitalization, with the gap narrowing to less than 1% as traders rotate into stable assets during a broad crypto downturn.

Ethereum's market capitalization stood at $200.9 billion as of June 5, according to CoinMarketCap, while USDT's supply data from DefiLlama indicates a market value exceeding $198 billion. The less-than-1% gap is the narrowest in the stablecoin's history relative to the second-largest cryptocurrency.

Ethereum has lost more than 16% of its value over the past seven days, trading at $1,664 as of 9:12 a.m. ET on June 5. The decline pushed its 52-week low to $1,626, down 37% from a year ago and more than 66% below its August 2025 peak of $4,954. USDT, by contrast, has maintained its $1 peg throughout the selloff, with its circulating supply holding steady near 140 billion tokens, according to DefiLlama.

A USDT flip of Ethereum would mark the first time a stablecoin has claimed the No. 2 spot in crypto rankings, reflecting a risk-off posture across digital asset markets. The milestone could accelerate regulatory scrutiny of Tether's reserve composition, while also reinforcing the dominance of dollar-pegged tokens in crypto trading infrastructure.

Stablecoins Absorb Risk-Off Flows

Stablecoins are cryptocurrencies designed to maintain a fixed value relative to an external asset, typically the U.S. dollar. Unlike traditional bank deposits, they operate on blockchain networks and are backed by reserves that vary by issuer. Tether's USDT is backed by a mix of Treasury bills, cash, and other instruments, as disclosed in its quarterly attestations.

Bitcoin, the largest cryptocurrency by market cap at $1.24 trillion, has also declined 15% over the past week, trading at $61,950. The simultaneous selloff across major tokens has pushed total crypto market capitalization below $2.2 trillion, down from a 2025 peak above $3.5 trillion, according to CoinGecko.

The stablecoin market has emerged as a relative safe haven during the downturn. USDT's supply has remained largely unchanged, while Circle's USDC has seen modest inflows, according to DefiLlama data. Combined, the two largest stablecoins represent more than $230 billion in on-chain value, serving as the primary liquidity layer for crypto trading.

What a Flip Means for Market Structure

A stablecoin surpassing Ethereum in market capitalization would represent a structural shift in how value is distributed across crypto markets. It would also place a centralized, fiat-backed token above a decentralized blockchain network in the rankings — a dynamic that critics of stablecoin dominance have long flagged as a sign of crypto's reliance on traditional finance infrastructure.

Regulators in multiple jurisdictions have increased their focus on stablecoin issuers. The European Union's Markets in Crypto-Assets regulation, which took full effect in 2025, imposes reserve and transparency requirements on stablecoin operators. In the U.S., the Lummis-Gillibrand stablecoin bill remains under discussion in Congress. Tether has faced scrutiny from U.S. regulators in the past, including a settlement with the New York Attorney General's office in 2021 and a separate settlement with the Commodity Futures Trading Commission.

This article is for informational purposes only and does not constitute investment advice.