Ethena's SteakhouseFi Vault: Sustainability

Verdict: The vault is structurally sustainable without the points program, but its TVL retention is sensitive to yield competitiveness.

---

How the Vault Generates Yield (No Points Required)

The SteakhouseFi vault uses Ethena's sUSDe reward-bearing token vault mechanism — identical in design to Rocketpool's rETH or Binance's WBETH. Users stake USDe and receive sUSDe atomically; the balance remains constant while its exchange value grows daily from protocol revenue.

Critically, the protocol does not rehypothecate, lend out, or otherwise utilize deposited USDe — value accrues from the synthetic dollar backing mechanics themselves, not from redeploying user capital.

Yield derives from three real sources with no token emissions:

---

Points Are Additive, Not Foundational

Ethena runs two separate points programs alongside vault deposits:

Both programs began in early December 2025. They are designed to drive trading volume on USDe-settled venues — not to sustain vault yields directly. The points are additive incentives layered on top of real yield sources.

---

Current Yield & Sustainability Assessment

Base yield without points: approximately 3.72–4.52% APY (June 2026), down sharply from the 11.2% lifetime average and the ~19% average seen in 2024. Historical annualized ETH funding rates averaged 6–7.5% over the past three years, suggesting current yields may compress further if funding regimes normalize or turn negative.

The ~4.5% current APY is competitive against traditional finance alternatives (Apple Card Savings ~4.5%, FDIC average ~0.5%) and remains above risk-adjusted alternatives like Sky's sUSDS (~12.5% but with a different risk profile). The reserve fund (~1.1% of supply) absorbs losses during negative funding periods, meaning stakers receive positive or flat rewards — negative protocol revenue is not passed to sUSDe holders.

---

Key Risks to Sustainability

1. Supply contraction: USDe has shed -60% (~$8.9B) since its October 2025 peak of ~$14.4B, driven by the depeg event and subsequent yield compression. Current supply sits at ~$5.5–5.92B.

2. Yield compression risk: Historical averages of 6–7.5% suggest the current 3.72–4.52% APY may compress further. If funding regimes normalize or turn negative, the vault's adaptive treasury/lending fallback activates — but at lower absolute yields.

3. Competitive positioning: The vault's ability to retain TVL without points depends on maintaining yield above alternatives. If sUSDe APY falls well below competing stablecoin vaults or traditional high-yield savings, outflows from yield-sensitive depositors are likely.

4. Concentration risk: ~80% concentration in USD-stable and RWA factors creates correlated exposure to stablecoin ecosystem health.

---

Conclusion

The SteakhouseFi vault is structurally sustainable without the points program because yield originates from real DeFi lending markets and delta-neutral derivatives strategies — not from token emissions or incentive programs. Points are an additive layer for bootstrapping trading activity, not the yield mechanism itself. The vault's fee structure (~3%) is near cost-recovery and does not depend on incentive programs for operational viability.

However, TVL sustainability without points is contingent on maintaining competitive APY — currently ~4.5%, which is viable but not exceptional, and vulnerable to further compression if funding rates normalize. Institutional diversification efforts (e.g., Janus Henderson integrating tokenized CLOs into USDe reserves) may offset some of this pressure over time, but current market conditions remain yield-sensitive.

---

What remains open: direct competitor APY comparison data for other yield vaults in current market conditions; Steakhouse-specific fee revenue breakdown; concrete data on institutional inflow vs outflow since the depeg event.

---

Suggested Follow-Up Actions

1. Schedule a recurring yield-benchmark check — given the vault's sensitivity to funding rate regimes, setting a weekly or monthly alert to compare sUSDe APY against Sky sUSDS, Aave USDC lending rates, and Coinbase/USDC yields would surface outflow risk early. This fits the monitoring/automation path from the current research stage.

2. Run a deep-dive technical analysis on USDe supply trends — since the -60% supply contraction is the primary structural risk, charting on-chain supply velocity, large-holder outflows, and reserve fund adequacy over the past 6 months would clarify whether the contraction has stabilized or is still progressing.