Education

What Are Stablecoins and Why Do They Matter?

Midas Research

February 3, 2026

9 min read

Stablecoins are cryptocurrencies designed to maintain a stable value, typically pegged 1:1 to a fiat currency like the US dollar. They serve as a critical piece of infrastructure in the digital asset ecosystem, facilitating trading, payments, and DeFi applications without the volatility of other cryptocurrencies.

There are three primary types of stablecoins. Fiat-collateralized stablecoins (like USDT and USDC) are backed by reserves of fiat currency or equivalent assets held by a central issuer. Crypto-collateralized stablecoins (like DAI) are backed by other cryptocurrencies, typically over-collateralized to absorb price fluctuations. Algorithmic stablecoins use smart contract mechanisms to expand or contract supply to maintain their peg.

Stablecoins play several important roles in crypto markets. They provide a stable unit of account for pricing and trading. They enable quick movement of value between exchanges without the delays and costs of traditional banking. They serve as a base currency for most trading pairs. And they provide access to dollar-denominated value for users in regions with limited banking infrastructure.

The stablecoin market has grown to hundreds of billions of dollars in total market capitalization. USDT (Tether) and USDC (Circle) dominate the market, with both issuers publishing regular attestation reports about their reserves.

However, stablecoins are not without risks. Reserve transparency, regulatory status, counterparty risk, and de-pegging events are all important considerations. The collapse of the algorithmic stablecoin TerraUSD (UST) in 2022 demonstrated that not all stablecoins carry the same risk profile.

Regulatory attention on stablecoins has intensified globally. The EU's MiCA regulation includes specific requirements for stablecoin issuers, and similar frameworks are being developed in other jurisdictions. Understanding the regulatory and risk profile of the stablecoins you use is an important part of managing your overall crypto exposure.