What Is Stablecoin?
Stablecoins are cryptocurrencies engineered to hold a stable value, almost always pegged to the US dollar at a 1:1 ratio. They exist because crypto's native volatility makes it impractical for everyday transactions or as a stable trading reserve.
Major types:
- Fiat-backed (USDT, USDC): Backed by reserves of cash and short-term debt. The most common type. Their stability depends on the issuer's reserves being real and adequate. - Crypto-backed (DAI): Backed by overcollateralized crypto positions. More decentralized but more complex. - Algorithmic (formerly UST, Frax): Maintained via algorithmic mechanisms rather than collateral. Historically prone to collapse — UST's de-peg destroyed $40B in 2022.
For traders, stablecoins are the on/off ramp between fiat and crypto positions. Most centralized exchanges denominate prices in USDT or USDC. Holding stablecoins between trades avoids volatility while staying inside the crypto ecosystem.
Risk: even "safe" stablecoins are not the same as bank deposits. Issuer solvency matters. Diversify across multiple stablecoin issuers for large positions.
Related terms
- Liquidity — The ease with which an asset can be bought or sold without significantly affecting its price.
- Volatility — A statistical measure of how much an asset's price varies over a period.
- Cryptocurrency Exchange — A platform for trading cryptocurrencies — either centralized (CEX) or decentralized (DEX).