The Market
Stablecoins aim to maintain a 1:1 peg with the US dollar (or other fiat). The total stablecoin market cap grew from ~$5B in 2019 to $200B+ by 2026, making it a larger holder of US Treasuries than some sovereign nations.
The Major Stablecoins
USDT (Tether)
- Largest by market cap
- Issued by Tether (Hong Kong / BVI entity)
- Backed primarily by US Treasury bills plus some commercial paper and other instruments
- Reserves published quarterly; methodology has been disputed
USDC (Circle)
- Second-largest
- Issued by Circle (US-based)
- Backed by 100% US Treasuries and cash at regulated banks
- Audited monthly by Big Four accounting firm
- Most compliance-friendly
DAI (MakerDAO)
- Decentralized / crypto-collateralized
- Over-collateralized with ETH, USDC, and other crypto
- No single issuer; governed by MKR token holders
FDUSD, PYUSD, USDP
- Various smaller stablecoins with different backing regimes
How They Maintain the Peg
Centralized (USDT, USDC, PYUSD)
- Issuer holds reserves matching outstanding tokens
- Users can redeem 1:1 for fiat (with varying rules and minimums)
- Arbitrageurs keep market price near $1 via mint/redeem
Decentralized (DAI)
- Users lock crypto collateral (e.g., $150 of ETH to mint $100 of DAI)
- Collateral is liquidated if its value falls below a threshold
- System relies on incentives rather than a central redeemer
Use Cases
Crypto trading
Stablecoins are the "dollar" layer on crypto exchanges. Most BTC trading volume globally is paired against USDT, not USD.
Cross-border payments
Emerging as a cheaper, faster alternative to SWIFT for international transfers. Particularly prominent in Latin America, Africa, and Southeast Asia.
DeFi
Stablecoins are the unit of account in most decentralized lending, derivatives, and yield farming.
Dollar access in sanctioned / high-inflation economies
Argentina, Nigeria, Lebanon, and others have seen strong stablecoin adoption as synthetic dollar exposure.
Risks
Reserves quality
If an issuer's reserves are not 100% cash/T-bills, the peg can fail under stress.
Redemption friction
Some issuers have minimum redemption amounts, blocked regions, or slow processing.
Regulatory risk
US stablecoin legislation (GENIUS Act and successors) is shaping what reserves are allowed.
Depegging episodes
- May 2023: USDC briefly depegged to $0.87 during Silicon Valley Bank collapse because Circle held reserves there
- May 2022: TerraUSD (algorithmic stablecoin) collapsed from $1 to $0 in days
Regulation
US: Federal framework being debated. States (NY BitLicense, Wyoming crypto banks) have led.
EU: MiCA regulation requires stablecoin issuers to be authorized as e-money institutions.
UK: FCA approach still evolving.
Stocks with Stablecoin Exposure
- Circle (CRCL): issuer of USDC
- Coinbase (COIN): split of USDC reserve interest
- PayPal (PYPL): issuer of PYUSD
Not directly: Tether is private.
Key Takeaways
- Stablecoins maintain fiat pegs via reserves or collateralization
- USDT and USDC dominate; smaller players serve niches
- Major use cases: trading, cross-border payments, DeFi
- Risks: reserve quality, regulation, depegging episodes
- Increasingly a meaningful holder of US Treasuries
Track crypto regulatory news at [/topic/crypto-markets](/topic/crypto-markets).