What is the largest stablecoin by market cap?

Tether is the largest stablecoin by market cap, at $183.8 billion as of September 2026.

What are the different types of stablecoins?

The types of stablecoins are:Fiat-backed stablecoins with reserves in fiat currencyCrypto-collateralized stablecoins with cryptocurrency reservesAlgorithmic stablecoins that use algorithms to maintain their pegsSynthetic stablecoins that use financial engineering, such as derivatives, to maintain their pegs

Are stablecoins safe?

Stablecoins can be safe, but it depends on the issuer and how the stablecoin maintains its peg. Fiat-backed stablecoins from issuers that regularly publish attestations of their reserves are the safest option.

Which Stablecoins Are the Largest and Most Popular in 2026?

From Tether to USDC and Ethena USDe, these are the top stablecoins of 2026 ranked by market cap, trading volume, and adoption across crypto and traditional finance.

By Lyle Daly – Updated Oct 6, 2026 at 4:07 PM EST | Fact-checked by Frank Bass

Key Points

Tether dominates with $183.8B cap, holding 58% of the stablecoin market.
Top two stablecoins, Tether and USDC, comprise 81.7% of the market.
Other stablecoins in the top 10 offer diverse backing and applications.

Tether (USDT -0.04%) had a $183.8 billion market cap, topping the list of the largest stablecoins by a wide margin, according to CoinMarketCap data as of October 2026. Its market cap is more than double that of second-place USDC (USDC -0.02%), which sits at $74.1 billion.

Although there are hundreds of stablecoins, Tether and USDC account for the majority of the value, combining to make up 81.7% of the $316 billion stablecoin market.

10 largest stablecoins by market cap in 2026

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Data source: CoinMarketCap (2026), Oct. 1, 2026.
Rank	Name	Market Cap	Volume(24h)	Circulating Supply
1	Tether (USDT)	$183.79B	$76.38B	183.87B USDT
2	USDC (USDC)	$74.07B	$18.97B	74.07B USDC
3	Ethena USDe (USDe)	$4.89B	$22.21M	4.89B USDe
4	Dai (DAI)	$4.56B	$20.57M	4.57B DAI
5	World Liberty Financial USD (USD1)	$4.39B	$941.54M	4.39B USD1
6	Global Dollar (USDG)	$3.15B	$712.26M	3.15B USDG
7	PayPal USD (PYUSD)	$2.76B	$57.53M	2.76B PYUSD
8	Ripple USD (RLUSD)	$2.51B	$221.03M	2.51B RLUSD
9	USDD (USDD)	$1.52B	$2.82M	1.52B USDD
10	United Stables (U)	$1.49B	$187.9M	1.49B U

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Tether alone makes up 58% of the stablecoin market, and there's a massive gap between the top two stablecoins and the rest of the pack. After Tether and USDC, no other stablecoin is worth more than $10 billion. While most stablecoins have been around for years, a few newer entrants also made the top 10, including World Liberty Financial USD (CRYPTO:USD1) and United Stables (U -0.02%).

What sets each stablecoin apart

Stablecoins that track the U.S. dollar may seem the same at first glance, but each one of these cryptocurrencies has characteristics that set it apart.

1. Tether (USDT)

Launched in 2014, Tether was one of the first stablecoins, and it's primarily used for payments, crypto trading, and lending. It's fiat-backed with reserves that include U.S. Treasuries, precious metals, and secured loans. Although Tether (the issuer) publishes quarterly attestations of its USDT reserves, a full audit by an accounting firm has not yet been conducted, drawing criticism.

2. USDC

USDC is a fiat-backed U.S. dollar coin that prioritizes compliance and transparency. Its issuer, Circle Internet Group (CRCL -3.91%), went public in June 2025 and became one of the most popular cryptocurrency stocks. Circle focuses on integrating USDC into the traditional financial system. USDC can be used to settle transactions on Visa's (V +0.39%) network, and some banks and brokers now allow USDC to facilitate deposits.

3. Ethena USDe (USDe)

Ethena USDe (USDE -0.04%) is a synthetic stablecoin built on the Ethereum (ETH -4.63%) blockchain. It maintains its peg to the U.S. dollar through Ethereum-based derivatives rather than fiat currency reserves or crypto collateral. Ethena USDe is popular in the decentralized finance (DeFi) space, largely because it offers high yields, turning a stablecoin that doesn't appreciate into a crypto income investment.

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4. Dai (DAI)

Dai (DAI -0.01%) is a decentralized, crypto-collateralized stablecoin created by Sky (formerly MakerDAO) in 2017. It's most popular in DeFi protocols for lending, borrowing, and yield farming. Sky rebranded Dai as USDS (USDS -0.09%), and most exchanges converted DAI tokens to USDS in April 2026. CoinMarketCap still lists the token as DAI but has confirmed its rebrand to USDS.

5. World Liberty Financial USD (USD1)

World Liberty Financial, an organization with deep ties to the Trump family, launched its own stablecoin in April 2025. World Liberty Financial USD is a fiat-backed stablecoin designed for institutional settlement. Transactions involving this stablecoin have come under scrutiny due to World Liberty Financial's proximity to the president, with a Trump business reportedly owning 38% of the company.

6. Global Dollar (USDG)

Global Dollar (USDG -0.01%) is a fiat-based stablecoin issued by Paxos, a blockchain infrastructure company. It's designed for enterprise use and plays a central role in the Global Dollar Network, an alliance of more than 100 financial institutions that use this stablecoin. Global Dollar also has a revenue-sharing model, under which up to 100% of the interest earned on its reserves is distributed to its network partners.

7. PayPal USD (PYUSD)

Many banks and payment processors have experimented with or launched their own stablecoins, including PayPal (PYPL +0.62%). The online payments company launched its stablecoin, PayPal USD (PYUSD -0.06%), in 2023. Issued by Paxos Trust Company, this stablecoin is 100% backed by fiat reserves and is fully integrated into PayPal's ecosystem.

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8. Ripple USD (RLUSD)

Ripple, the fintech company that created XRP (XRP -5.41%), launched its Ripple USD (RLUSD +0.00%) stablecoin in December 2024. Ripple USD supports Ripple's cross-border payments system and is designed to meet the needs of enterprise customers and financial institutions. It's fully backed by fiat reserves and is issued under a New York State Department of Financial Services (NYDFS) Trust Charter.

9. USDD

USDD (USDD -0.10%) is a decentralized stablecoin launched on the TRON (TRX -0.09%) blockchain in 2022. It was originally modeled after the defunct TerraUSD but later adopted a reserve-backed model with cryptocurrency collateral, including USDT and TRX. Its trading volume has been hampered by its association with TRON and by the fact that the biggest U.S. exchanges don't offer it, resulting in USDD regularly recording the lowest trading volume among major stablecoins.

10. United Stables (U)

Launched in December 2025, United Stables is the newest stablecoin in the top 10. It aims to offer one inclusive stablecoin layer that consolidates stablecoin liquidity across blockchains. United Stables is also unique in that it's designed for use by humans and AI agents, and its reserves include a mix of fiat currency and crypto collateral.

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Tether and USDC dominate, but the rest of the field is getting more complex

The stablecoin market remains top-heavy. Not only do Tether and USDC account for more than 80% of the market, but they also drive most of the trading activity. Their combined trading volume accounts for 96% of all total stablecoin volume, according to CoinMarketCap data from Oct. 1, 2026.

Although the biggest stablecoins are firmly entrenched, many different parties are getting in on the action as stablecoin adoption grows. This includes politically connected entrants like USD1, with its ties to World Liberty Financial, and stablecoins from international issuers, such as United Stables.

Issuers use a diverse range of backing for stablecoins. Fiat-backed stablecoins remain the most popular, but the top 10 also includes coins using crypto collateral and synthetic stablecoins backed by complex financial engineering. All these different types of backing structures mean that stablecoins aren't interchangeable just because they trade for $1 -- the risk can vary significantly based on how they maintain their value.

The future of the stablecoin market

While there's still debate about whether crypto is worth holding, stablecoins arguably have the most legitimate use case. The best stablecoins have the advantages of blockchain payments, including fast processing speeds and cheap transaction fees, without the volatility of other cryptocurrencies.

They aren't investments, which keeps them out of the typical crypto vs. stocks discussion. But they do work well for sending money, as their high trading volumes demonstrate, and they could be the type of cryptocurrency that sees the most widespread usage.

So far, the largest stablecoins have seen most of the growth in market cap and activity. Although there's concentration at the top, there's growing diversity below it, with different types of stablecoins available from a variety of issuers.

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FAQs

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About the Author

Lyle Daly is a contributing Motley Fool stock market analyst covering information technology and cryptocurrency. Lyle has been a contributor at the financial services company since 2018. His work has been featured on USA Today, Yahoo Finance, MSN, Fox Business, and Nasdaq. Before joining The Motley Fool, he wrote for financial brands including Intuit.

TMFLyleDaly

@LyleDaly

Lyle Daly has positions in Ethereum, Tether, and USDC. The Motley Fool has positions in and recommends Ethereum, PayPal, Visa, and XRP. The Motley Fool recommends TRON and recommends the following options: short June 2026 $50 calls on PayPal. The Motley Fool has a disclosure policy.

Which Stablecoins Are the Largest and Most Popular in 2026?

From Tether to USDC and Ethena USDe, these are the top stablecoins of 2026 ranked by market cap, trading volume, and adoption across crypto and traditional finance.

Key Points

10 largest stablecoins by market cap in 2026