Vaults
Three live vaults, three different claims on the Arc asset class.
| Symbol | Weighting | Holdings | NAV / share | 30d yield APR |
|---|---|---|---|---|
| ARC10 | Float-weighted, 15% cap | 3 | 1.0000 USDC | 0.0% |
| FXX | Equal-weight, quarterly reconstitution | 2 | 1.0000 USDC | 0.0% |
| YLD1 | Yield-velocity, 15% cap | 2 | 1.0000 USDC | 0.0% |
All three opened at epoch 0 on September 16, 2026, the day Arc mainnet went live, at 1.0000 USDC per share. During the bootstrap phase NAV stays at deposits in, deposits out, and yield APR stays blank; both go live with the position executor.
ARC10, the Arc Ten
The broad index: up to ten Arc-native assets by float, weighted by that float with the standard 15% cap. On day one the registry lists USDC and EURC (USYC has no supply on Arc yet, and the registry refuses a token with none); the rest of the weight sits in USDC until more assets clear eligibility. This is the default choice if you want the class, not a view.
FXX, the Stable FX Index
Arc ships StableFX, an on-chain FX engine that settles non-USD stablecoins against USDC with institutional quotes. FXX holds only the non-USD stablecoins listed on Arc, equal-weighted, reconstituted quarterly, and its carry inherits FX-market rhythm rather than pure crypto flow.
YLD1, Yield Stream One
A yield-first basket. Positions are sized by trailing yield velocity, the yield an asset produced per unit of position, rather than by float. It concentrates on tokenized treasuries and therefore carries more single-name exposure than ARC10, inside the same 15% cap.