Frax Ether

Frax Ether is Frax Finance’s liquid ETH staking token: holders stake ETH through Frax, and the staked version earns the validator yield. At $70M TVL in the 2026-08-14 survey, it is below our size floor, so a sleeve-sized client position would make up a meaningful share of the token’s liquidity. We do not open an individual review until it clears that floor; size alone decides the judgment, whatever the protocol’s quality. If TVL crosses the line and holds, the file reopens and joins the Ethereum LST comparison, where Lido and Rocket Pool are the selected providers.

Review triggers: events that reopen the verdict
• TVL sustained above the retired TVL threshold for 30 days

Watched nightly: a warning on its venues or files, or a cited document that changes, reopens the memo. The first confirmation is due 2026-11-15.

The research file

Materiality mechanism, applied

The size floor limits capacity; it does not judge quality. A $2 million household with a 5-10% crypto sleeve and a 10-40% venue weight would direct roughly $10,000 to $80,000 here. Across 100 similar clients, one practice could direct $1 million to $8 million to one venue based on the same research. Below the size floor for protocol TVL, that book can strain exits. TVL is also a generous measure of capacity, not a promise that withdrawals will clear: utilization, queues, unbonding, bridge depth and token liquidity can all leave less available to withdraw than the headline figure suggests. Small size does not itself show weak governance or team quality. The class rule makes no such judgment because strong controls cannot fix too little capacity for this distribution channel.

Mechanism

ETH mints frxETH. Depositing frxETH into the ERC-4626 sfrxETH vault earns the validator yield. Frax distributes 90% of staking income to sfrxETH, keeps 8% as a protocol fee and sends 2% to an insurance fund. V2 also lends ETH to validator pools and can put idle ETH into a Curve AMO.

Control and operating evidence

Frax governance and operators control validator credentials, the Beacon Oracle, the protocol fee, retained liquidity and AMO operation. Frax publishes validator addresses and performance and documents the contracts. If the protocol clears the size floor, its mixed lending and AMO design would need a current audit and review of who holds authority.

Exit consequences

Unstaking sfrxETH returns frxETH. Direct frxETH redemption produces a transferable queue NFT, then waits for Ethereum entry and exit queues plus a governance-set delta. Payment is first-come, first-served and can be partial if ETH is short. Secondary swaps add peg and pool-liquidity risk.

Why the class rule decides

DefiLlama recorded about $95.9M. That remains below the size floor despite nearing it, so we do not open the individual review for comparative LST selection or the V2 lender and AMO design. Sustained scale above the size floor would reopen review of validator distribution, operator control, insurance, AMO exposure and stressed redemption.

Research status

This is a capacity-unproven record for Frax Ether, not a quality rejection or approval. Reported TVL says how big the venue is, not what the client owns, who can change the rules, or how a position exits at a proposed size. The individual review opens when the protocol clears the size floor.

Sources

The claims above trace to these. Where a number could not be independently verified, the thesis says so.

• Frax Docs — frxETH and sfrxETH overview · primary · accessed 2026-08-14
  Supports: frxETH minting, sfrxETH yield, fee split, insurance fund
• Frax Docs — redemption queue · primary · accessed 2026-08-14
  Supports: redemption NFT, entry and exit queue, governance delta, one-to-one exit
• Frax Docs — V2 validator and AMO controls · primary · accessed 2026-08-14
  Supports: Beacon Oracle, validator lending, Curve AMO, ETH shortage priority
• DefiLlama — Frax Ether survey record · secondary · accessed 2026-08-14
  Supports: survey TVL, chain distribution, liquid-staking category

Inherited controls

The research above describes the protocol layer. Every position also inherits the asset it holds and the chain it settles on. The layer with the most administrative power sets the position’s effective control; that describes control, not quality or suitability.