Performances
RD Popularity Index
RD Growth Index
Revenue & Burn
Protocol income
$0Buyback funds
--Burn funds
--Buyback ratio
--Protocol funds over time
Monthly amounts & ratios
| Period | Protocol income | Buyback funds | Burn funds | Buyback ratio |
|---|---|---|---|---|
| Nov 2026 | $0 | -- | -- | -- |
| Oct 2026 | $0 | -- | -- | -- |
| Sep 2026 | $0 | -- | -- | -- |
| Aug 2026 | $0 | -- | -- | -- |
| Jul 2026 | $0 | -- | -- | -- |
| Jun 2026 | $17 | -- | -- | -- |
Comparison
Follow Updates
Follow Lists
People
About Size Credit
Size Credit, now operating as Rheo, is a fixed-rate credit protocol on Base that unifies lending across maturities through a yield-curve order book: users post collateral and place limit orders specifying rate and term, or execute at market, while lender liquidity is shared across markets and unmatched liquidity can be routed to variable yield pools such as Aave. Markets are deployed via SizeFactory, deposit receipts use non-transferable rebasing tokens, and operations follow the FREI-PI pattern with atomic multicall support.
It addresses the fact that DeFi lending is almost entirely variable rate, leaving borrowers unable to lock funding costs; it launched on Base in August 2024 with ETH, cbETH and cbBTC as collateral and USDC as the main borrow asset, and later added Collections, curated baskets of expert-set fixed rates. Fixed rates depend on order book depth at each tenor, so thinner maturities fill less often and unmatched funds earn only variable yield, and the external brand has shifted to Rheo while docs and frontend naming remain inconsistent.
No new funding, token or major partnership announcement was verifiable for Size Credit in 2026. The protocol now operates as Rheo, built around a term-structure order book where lenders and borrowers post fixed-rate orders for specific maturities, while deposits waiting for a match sit in Very Liquid Vaults allocated to instantly withdrawable strategies such as Aave V3, Morpho and Euler.
A pre-launch third-party audit of Size Credit found three low-severity issues, including a gas optimisation in APR validation and bounds checks on liquidation rewards, all of which were fixed. The protocol uses ERC-4626 vaults, UUPS proxies and TimelockController access control, is listed in Circle's USDC ecosystem directory, and supports Base and Ethereum.
Size Credit's Future strategy and roadmap: Extend fixed-rate credit beyond stablecoins to more collateral types and maturities, deepen secondary-market transfer and the rate curve, and open the market to institutional capital that needs to lock in duration.
Rodrigo Sottomayor — Chief of Growth; leads growth and market expansion for Rheo's fixed-rate lending protocol.