Stablecoins are tokens pegged to the price of an asset like the U.S. dollar. Tether (USDT) was the first to launch and remains the market leader despite years of rumors and opaque audits. When they debuted, USD-pegged stablecoins were a revolutionary innovation that transformed the crypto economy.
Stablecoins give professional and day traders a low-cost way to move between cryptocurrencies and USD as markets shift. As native crypto assets, they can be easily transferred between wallets and exchanges, boosting overall liquidity and creating arbitrage opportunities across trading platforms.
The massive DeFi boom that began in 2020—especially in borrowing and lending—relied on deep pools of USD-pegged stablecoins to move funds seamlessly across dApps, wallets, and blockchains. Strong demand for stablecoins typically keeps lending rates high. Users can earn interest by depositing into lending pools, where smart contracts function like banks, matching savers with borrowers.
While designed for price stability, stablecoins carry different risks based on their peg mechanisms. There are three main types: fiat-backed (collateralized 1:1 by currency), crypto-collateralized (backed by cryptocurrency), and algorithmic (using smart contracts to dynamically peg to an asset).
The first two are well-established, but algorithmic stablecoins are often seen as the "holy grail" of design. A project that launches a reliable, scalable, decentralized, and fully auditable stablecoin—free from central control—could quickly dominate across CEXs, DEXs, DeFi, GameFi, and the metaverse.
Here’s a look at some algorithmic stablecoin projects that have made significant strides.
UST
Terra is a blockchain protocol built for scalable decentralized economies, powered by its native LUNA token and its yield-bearing stablecoin UST. Since its September 2020 launch, UST has seen rapid adoption and is now the fourth-largest stablecoin with a $10 billion market cap.
As an algorithmic stablecoin, UST uses LUNA to absorb short-term volatility and maintain its peg. The mechanism ensures minting one UST always costs $1 worth of LUNA, which is burned in the process. When UST trades above or below $1, LUNA holders can arbitrage the difference by swapping tokens, helping to stabilize the price.
UST has been central to the success of Anchor Protocol, a leading Terra dApp. Anchor is a savings protocol offering a low-volatility yield of around 20%. It quickly gained traction in DeFi, with Total Value Locked (TVL) surpassing $750 million within a month of launch. Today, its TVL stands at $11 billion.
UXD
UXD Protocol is a newer algorithmic stablecoin on Solana that automatically generates yield. Backers include Alameda Research, Defiance Capital, CMS Holdings, the Solana Foundation, Mercurial Finance, Solana founders Anatoly Yakovenko and Raj Gokal, and Saber founder Dylan Macalinao.
UXD takes a novel approach to maintaining its peg using delta-neutral positions—a hedging strategy from portfolio management that balances positive and negative deltas to offset price sensitivity in the underlying asset.
The delta-neutral backing for UXD involves a long spot Bitcoin position paired with a short Bitcoin perpetual futures position. As a bonus, UXD is yield-bearing: when users create these positions, they earn the funding rate from the perpetual futures contract when its price exceeds the spot price. Still in testing on Solana, the protocol plans to direct this yield—averaging roughly 10% APY—straight to UXD holders’ wallets.
FEI
FEI is another notable algorithmic stablecoin. Its key difference is that users cannot directly convert collateral into stablecoins. Instead, crypto assets enter the system via bonding curves, exchanging ETH for FEI. These assets are locked in Protocol Controlled Value (PCV)—the stablecoin’s collateral pool.
PCV helps maintain the peg by managing liquidity on DEXs like Uniswap. By limiting sell-side liquidity, FEI aims to avoid a "death spiral." The protocol is governed by the TRIBE token, letting holders vote on proposals such as adding new bonding curves, allocating PCV, and adjusting governance parameters.
FEI’s market cap is currently around $420 million. If it can reliably hold its peg during high volatility, that figure could rise significantly.