STABLECOIN 锚定

Stablecoins are cryptocurrencies designed to maintain a stable value relative to a reference asset — typically the US dollar. The most widely used stablecoins include USDT (Tether), USDC (Circle), and DAI (MakerDAO). Despite being designed to hold a 1:1 peg with the dollar, these assets can and do trade above or below parity during periods of market stress or issuer-specific concerns.

A stablecoin trading above $1 typically indicates high demand — buyers are willing to pay a premium to hold it, often because they want to exit volatile crypto positions and on-ramps to fiat are unavailable or slow. This happens most often during bull market peaks when on-exchange demand for dollar-denominated assets spikes. A stablecoin trading below $1 indicates either excess supply, credit concerns about the issuer, or panic selling by holders who doubt solvency.

The 2022 collapse of TerraUSD (UST) — which lost its peg catastrophically and went to near-zero — demonstrated that not all stablecoins carry equal risk. Algorithmic stablecoins that maintain their peg through reflexive mechanisms rather than direct dollar reserves can fail under extreme conditions. USDC briefly depegged in March 2023 when Circle disclosed exposure to Silicon Valley Bank, recovering within days after the Federal Reserve intervened.

Monitoring stablecoin peg deviations is valuable both as a real-time market stress indicator and as a portfolio management tool. Significant peg deviations in widely-used stablecoins can be an early signal of broader market stress or specific credit events that may have second-order effects across DeFi liquidity and centralized exchange operations.