Most stablecoin yield on Solana eventually traces back to crypto-native activity: trading fees, staking rewards, or token incentives. Solstice tells a different story. It's driven by a delta-neutral yield engine whose underlying private strategy has been live since January 2023, designed to keep yield-seeking capital on Solana without exposing it to market direction.
That’s what drew us to the USDC Reserve of the Solstice Market on Kamino for inclusion in our RockawayX RWA Vault.
In this spotlight, we break down what Solstice is and how its delta-neutral strategies generate yield, give an overview of its eUSX stablecoin, and share details on why Solstice earned a place in our RWA vault.
What Is Solstice?
Solstice is an institutional-grade DeFi protocol on Solana built around a synthetic stablecoin (USX) and a yield-bearing liquid staking token (eUSX). The protocol aligns with our vision of using quality yield mechanisms to keep yield-seeking capital native to Solana, rather than seeing it bridge to other chains.
Solstice launched its permissionless protocol in September 2025 with over $160 million in TVL; today, its USX stablecoin is the largest Solana-native stablecoin. While that onchain protocol is roughly six months old, the delta-neutral strategy powering its yield has been running as a private strategy since January 2023.
Solstice operates across three integrated verticals:
- USX: An overcollateralized, soft-pegged to USD synthetic stablecoin. USX is the entry point to the Solstice ecosystem and is integrated across 50+ Solana DeFi partners.
- YieldVault: A delta-neutral yield platform where USX holders lock tokens to receive eUSX, a yield-bearing token representing their share of the underlying fund. The underlying private strategy has been running since January 2023, delivering a 13.96% three-year annualized net IRR, 21.5% annualized returns in 2024, and an aggregate Sharpe ratio of 6.6 with a max daily drawdown of just -0.14% since inception.
- Solstice Staking: Following the acquisition of Solstice Staking AG, Solstice operates one of the most trusted staking infrastructure platforms in the industry, securing over $600 million in staked assets across 7,000+ validator nodes with 100% renewable energy infrastructure and 99.99% uptime.
How the Yield Is Generated
Solstice's yield comes from a dynamic delta-neutral strategy that includes funding rate arbitrage, hedged staking, and tokenized treasuries. The strategy is actively managed by an experienced trading team with a 3-year track record dating back to the private fund's launch in January 2023. It is deployed across major centralized exchanges, secured with institutional custody providers Ceffu and Copper, and supported by independent pricing and proof-of-reserve infrastructure.
We therefore have a yield source that is not tied to token emissions, leverage loops, or crypto market sentiment, making it perfect for inclusion in an RWA-focused yield vault.
eUSX: The Yield-Bearing Token
When USX holders lock tokens into the Solstice YieldVault, they receive eUSX, a yield-bearing liquid staking token that represents their share of the underlying fund. eUSX accrues value as the delta-neutral strategies generate returns, with net yield accruing to holders.
eUSX holders can supply it as collateral into Kamino's Solstice Market to borrow USDC against their position, and Kamino offers automated looping strategies through Multiply, enabling up to 4x leverage on eUSX/USX positions. This creates consistent borrowing demand for USDC in the Solstice Market.
That borrowing demand is what the RockawayX RWA vault taps into. The vault does not hold Solstice collateral assets directly. Instead, it supplies USDC into the USDC Reserve of the Solstice Market on Kamino, earning yield as that USDC is borrowed.
How Solstice Fits Into the Vault
There are a few primary reasons why Solstice has been included in our RWA Kamino Vault:
Strong borrowing demand backed by a proven yield source
The vault earns yield when borrowers take USDC from the Solstice Market’s USDC reserve on Kamino. That borrowing demand is supported by Solstice’s delta-neutral yield engine and the Solstice ecosystem’s collateral assets used across the market. The quality and consistency of the underlying strategy are what sustain borrowing demand and, by extension, the vault’s lending yield.
Non-correlated diversifier
The borrowing demand in the Solstice Market is driven by funding rate arbitrage, hedged staking, and tokenized treasury strategies, not by payment financing, reinsurance, or traditional lending. This makes it a structurally different yield source from the vault's other allocations to Huma, OnRe, and Prime. When one market compresses, the others are not forced to follow.
High-quality Solstice ecosystem collateral
Solstice’s collateral assets are designed to represent value backed by the underlying delta-neutral strategy. That structure supports active, ongoing borrowing activity in the Solstice Market and helps translate borrowing demand into lending yield for the vault’s USDC allocation.
Institutional infrastructure
Solstice's smart contracts have been audited by Halborn. Collateral custody is managed by Ceffu and Copper. Chainlink provides real-time proof of reserves for USX. The staking arm secures over $1 billion in assets with 99.99% uptime.
Conclusion
Solstice earned a place in the RockawayX RWA Vault because it creates durable, non-directional borrowing demand for USDC on Solana.
By supplying into the USDC Reserve of the Solstice Market on Kamino, our RWA vault on Kamino earns yield that is driven by real usage inside the Solstice ecosystem, not by short-lived token incentives or purely speculative loops.
This allocation also improves the vault’s diversification. Solstice’s demand dynamics are distinct from other yield sources in the portfolio, which helps the vault stay resilient as conditions change across markets.
For more on the vault, visit the Rockaway RWA USDC vault page.
