USDYvsUSDD
Ondo US Dollar Yield vs USDD — side-by-side comparison of supply, chains, backing, and peg data.
Side-by-side
USDY — Ondo US Dollar Yield
USDD — USDD
30-day peg stability dotted line = target · both charts share one scale
What the last 30 days show
Over the last 30 days USDY supply moved -0.9% and USDD +7.9% — USDD grew faster. USDD held the tighter band: worst deviation 29 bps against 1422 bps.
Key differences
- USDY is roughly 1.4× larger than USDD by USD circulation value ($2.14B vs $1.51B).
- USDY ranks #11 while USDD ranks #13 among all tracked stablecoins.
- Both are pegged to the same currency (USD), so they compete directly for the same use cases.
- USDY is a fiat-backed stablecoin; USDD is crypto-backed. Different mechanism, different failure modes.
- Reserves differ — USDY holds tokenized us treasuries (ondo), USDD holds algo + trx collateral.
- USDY is deployed on 15 chains — much broader coverage than USDD's 4.
- Primary chain differs — most USDY supply lives on Ethereum, while most USDD supply is on Tron.
Full comparison table
| Metric | USDY | USDD |
|---|---|---|
| USD circulation value | $2.14B | $1.51B |
| Rank (by USD value) | #11 | #13 |
| Peg | USD | USD |
| Mechanism | fiat-backed | crypto-backed |
| Backing | Tokenized US Treasuries (Ondo) | Algo + TRX collateral |
| Chains deployed | 15 | 4 |
| Primary chain | Ethereum | Tron |
| Issuer | Ondo Finance | TRON DAO Reserve |
| CoinGecko | View → | View → |
Frequently Asked Questions
What's the main difference between USDY and USDD?
Both track USD, so they compete for the same use cases. USDY holds tokenized us treasuries (ondo); USDD holds algo + trx collateral. USDY ranks #11 by USD value and USDD ranks #13.
Which is bigger, USDY or USDD?
USDY is larger, with $2.14B in circulation vs $1.51B for USDD. That's roughly 1.4× the size.
Is USDY safer than USDD?
Neither is inherently safer. Safety turns on reserve composition, issuer transparency, redemption rights and regulatory oversight — none of which this page audits. USDY uses a fiat-backed model; USDD uses a crypto-backed one. Read each issuer's most recent reserve attestation before choosing.
Can I convert between USDY and USDD?
Yes. USDY and USDD both trade on major centralized and decentralized exchanges. Since both track USD, the exchange rate is typically very close to 1:1. Direct swap protocols on Ethereum, Solana, and other chains offer the tightest spreads.
Should I choose USDY or USDD?
The right choice depends on your use case. Consider: which chain do you need? USDY is available on 15 chains and USDD on 4. What backing do you prefer? What's your integration surface (exchanges, DeFi protocols, payment providers)? Both have deep liquidity, so market cap alone shouldn't decide it.