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Introduction
The digital currency landscape is witnessing the emergence of innovative protocols that aim to redefine financial sovereignty and efficiency. Among these, the Ethena protocol represents a significant stride toward creating a decentralized financial ecosystem via its own synthetic dollar USDe and a novel concept known as the “Internet Bond.”
Decentralized stable assets compete to solve best what is known as the stablecoin trilemma, consisting of the following three pillars:
- Sustainable yield
- Stability
- Decentralization
Historical precedents have shown that traditional stablecoins, despite their facade of stability, are not impervious to market volatility. Instances such as the SVB collapse expose vulnerabilities that can lead to value fluctuations, a reality Ethena confronts head-on by articulating the divergent risk factors of its product.
This exploration delves into the mechanisms and implications of Ethena's offerings, providing a granular understanding of its potential impact on the digital economy.
What Is Ethena and USDe?
Ethena introduces USDe, a synthetic dollar asset that distinguishes itself from conventional stablecoins through its unique collateral structure and operational paradigm. Unlike traditional stablecoins, which rely on real-world financial assets for collateral, USDe leverages a mix of digital assets and futures positions. This approach addresses the limitations of existing dollar-linked assets, particularly their reliance on the traditional financial system, which introduces a layer of vulnerability and inefficiency.
It is designed to address the challenges of stability and scalability in the stablecoin space:
- Stability: USDe is pegged to the value of the US dollar, which means that 1 USDe will always be equal to 1 US dollar.
- Scalability: Unlike other stablecoins that rely on centralized reserves, USDe uses a unique mechanism called 'Internet Bond' to scale its supply within the Ethereum network. This allows it to grow in line with the demand without compromising its stability or requiring external collateral.
USDe Collateral Model
USDe is backed by a “delta-neutral” ETH position, a distinctive feature in comparison to existing stablecoin models that use Real-World Assets (RWAs) or Collateralized Debt Positions (CDPs) for collateral. A delta-neutral position is a strategy used in investing and trading to protect against significant price changes in an asset. In simple terms, it's a practice of balancing exposure perfectly so that no matter which way the asset's price moves (up or down), the overall value of your investments stays the same.
In the case of Ethena, each USDe is collateralized by a long staked ETH (stETH) position, offset by an equivalent ETH perpetual futures contract (ETH-PERP) short position.
This creates a delta-neutral position:
Positive Delta (stETH)+Negative Delta (Short ETH-PERP)=Delta-Neutral (USDe)
If the price of ETH drops from $3000 to $2500, the short ETH-PERP position offsets the $500 price swing. Conversely, if the price of ETH rises to $3500, the short ETH-PERP position decreases by $500.
In addition to Ethereum, Ethena also includes Bitcoin, Staked Ethereum (stETH), and Tether (USDT) within its collateral model. These other assets work in the same way. For example, BTC is paired with an equivalent short BTC-PERP position to maintain delta-neutral backing. The main difference is that ETH collateral can be staked to earn additional yield, while BTC cannot.
Advantages of a Delta Neutral Strategy
Overall, a delta neutral strategy not only enhances capital efficiency but also mitigates the liquidity constraints faced by similar projects, such as UXD in the Solana ecosystem, by leveraging the liquidity available in centralized exchanges.
Delta-hedging functions by adjusting the position in the underlying Ethereum collateral based on the option's delta, which represents the rate of change in the option's price for every one unit change in the underlying asset's price. Through this method, USDe strives to remain closely pegged to the US dollar. As market conditions fluctuate, the protocol dynamically alters its Ethereum positions to ensure that any exposure to price movements is appropriately hedged.
This approach offers several advantages:
- Risk Reduction: By decreasing sensitivity to volatile swings in Ethereum's price, USDe can offer a reduced risk profile compared to other stablecoins that do not employ such strategies.
- Improved Price Stability: Delta-hedging contributes to maintaining a stable exchange rate between USDe and the US dollar, which is vital for users who rely on predictability for trading and planning financial operations.
- Market Confidence: The rigorous application of this mechanism can enhance market confidence in USDe's ability to maintain its peg even during turbulent market conditions.
The implementation of delta-hedging demands continuous monitoring and adjustment, making it a sophisticated component of Ethena’s stability framework. To ensure effective execution, smart contracts automate these adjustments based on predefined rules and triggers, aligning with real-time market data.
Risks of a Delta Neutral Strategy
Ethena’s delta-neutral strategy is a mechanism design predicated on several critical conditions. Firstly, the average ETH perpetual funding must remain positive. Secondly, any periods of negative funding should be sufficiently covered by the yields from stETH. Lastly, an external pool of capital is earmarked to address further shortfalls. This multi-layered strategy is essential for maintaining the principal balance of USDe above the $1 mark, preventing erosion due to negative funding payments.
THE ROLE OF FUNDING RATES
The funding rate, a potentially volatile metric, is ingeniously utilized by Ethena to recalibrate supply and demand for USDe. Rather than being viewed solely as a risk, negative funding rates are seen as an opportunity for adjustment. If USDe holders opt to redeem their stablecoins during periods of negative funding, the protocol unwinds short hedges, facilitating a mean reversion of funding rates. This dynamic allows for a natural equilibrium between the expansion and contraction of supply, influenced by the attractiveness of yields.
ETH funding rates typically exhibit a positive bias, indicative of a demand-supply imbalance for leverage within the cryptocurrency market. An examination of ETH funding data reveals a natural tendency towards positive basis and contango, with a notable streak of 99 consecutive days of positive funding rates. Conversely, the longest streak of negative funding recorded was a mere 13 days. This positive funding environment is critical for Ethena's strategy, as it underscores the inherent demand for leverage and the capacity of the protocol to withstand negative funding periods.
Additionally, staked Ethereum yields play a pivotal role in buffering USDe against negative funding rates. Historical data suggests that stETH yields, ranging between 4-6%, provide a substantial margin of safety. The analysis of combined stETH yields and funding basis indicates that only a fraction of days experienced a negative excess spread. This financial cushion is fundamental to Ethena's resilience, ensuring the stablecoin can navigate through various market conditions without compromising its value.
USDe Architecture and Functionality
Ethena’s architecture is built around three core mechanisms: minting, redeeming, and staking USDe. To begin, users do not directly mint or redeem USDe. Instead, they interact with gatekept liquidity pools (directly through the Ethena UI or indirectly through an exchange).
On the back end, whitelisted liquidity pool participants (those who have satisfied Ethena’s KYC/AML checks) are responsible for executing swaps. For mints, USDe is minted by depositing collateral into Ethena. The whitelisted participants then use this fresh collateral to purchase stETH or BTC, which are paired with an offsetting 1x short perpetual futures position. This position is held on a centralized exchange, while the collateral assets are held off-exchange.
For redemptions (i.e. when USDe is trading above peg price), USDe can be swapped for 1:1 for $1 worth of collateral. Protocol participants unwind an equivalent position necessary to execute the redemption, and that collateral is returned to the user. The arbitrage from conducting these swaps is then collected by whitelisted participants. Users interacting with the Ethena frontend can simply deposit or redeem collateral equal to their position in USDe.
USDe Staking Yield: Internet Bond
A core driver of the growth in Ethena total value locked (TVL) has been its attractive yield offering. To take advantage of this high yield, users are required to stake their USDe to receive sUSDe via the Ethena front end. Unlike other staked tokens, sUSDe is a “reward-bearing” token, meaning yield accumulates within the staking contract, increasing the value of sUSDe over time.
This is what Ethena refers to as the “Internet Bond.” Stakers are effectively tapping into the yield generated by the Ethena protocol, which is a combination of stETH yield (typically averaging around 4%) and the yield from funding rates from its futures positions (which has generated upwards of 30% yield in 2024). Within bull markets, this creates a highly competitive APY for stakers.
Ethena adopts a market-responsive approach to interest rates, eschewing fixed rates in favor of a dynamic model that reflects natural market cycles. This philosophy allows for adjustments in USDe's market presence, aligning with the principles of expansion and contraction inherent to a healthy, market-driven economy.
Stay tuned for part 2, where we discuss the risks involved in the Ethena project. Or click here to read now!
