This Solana ETF Hit $121M in 12 Days—Here’s Why It Matters

The REX-Osprey SOL + Staking ETF (SSK), the first United States-listed ETF combining Solana (SOL) exposure with on-chain staking rewards, has surpassed $100 million in assets under management (AUM) within 12 trading days of its July 2, 2025 launch. 

Reaching $121,674,750 in AUM by July 21, 2025, the fund is in line with the growing institutional and retail interest in crypto staking products, showing Wall Street’s strong and increasing adoption of blockchain-based products.

SSK’s $100M Milestone in Just 12 Days

Having launched on July 2, 2025, the REX-Osprey SOL + Staking ETF (ticker: SSK) is the first United States-listed ETF to provide both Solana price exposure and staking rewards, distributed as monthly dividends. 

REX-Osprey SOL + Staking ETF (SSK) Chart (Source: Nasdaq)

Registered under the Investment Company Act of 1940, the fund allocates at least 50% of its net assets to staked SOL, 40% to exchange-traded products that stake Solana, and a smaller portion to liquid staking tokens like JitoSOL. 

This structure allows investors to earn a 7.3% staking return annually, without the need to manage crypto wallets, provided by standard brokerage accounts.

The fund recorded $12 million in inflows on its debut day and reached $121.7 million in AUM by July 21, 2025. 

REX-Osprey SOL + Staking ETF (SSK) Key Data (Source: Nasdaq)

Greg King, REX Financial’s CEO, called it “a major milestone for ETFs and the crypto space,”  noting that SSK “bridges traditional finance securities with blockchain-native returns.” 

Anchorage Digital, a federally chartered bank, serves as custodian, reducing risks such as slashing or protocol failures, boosting investor confidence.

Wall Street’s New Favorite: Why Staking Is Winning Investors

Wall Street’s increased adoption of crypto staking shows the popularity of the SSK ETF, driven by demand for high-yield options in a competitive fixed-income market. 

Institutional interest in staking is increasing, with Brave New Coin reporting a 27% increase in staked Ether to over 34.7 million ETH by September 2024. Platforms like Binance offer Solana staking yields typically between 5% and 8%, consistent with SSK’s 7.3% yield. 

This change is supported by growing regulatory certainty, most notably the SEC’s May 2025 conclusion that staking is not a violation of securities law.

The SEC is currently reviewing nine spot Solana ETF applications, with Bloomberg analysts estimating a 95% approval probability by year-end 2025, pointing to a more developed  regulatory framework. 

Staking’s similarity to dividend-paying assets appeals to institutional allocators seeking regulated yield, further driving adoption.

Crypto’s Next Frontier: SSK and the Rise of Yield-Driven ETFs

The SSK ETF’s success shows potential growth for staking-focused investment products. REX-Osprey has filed for ETFs targeting XRP, DOGE, and ETH, suggesting further expansion in this category. 

Supportive policies, such as President Trump’s pledge to make the United States the “crypto capital of the world,” could accelerate this trend.

Regulatory challenges remain an issue, including scrutiny over staking risks like hacking or protocol vulnerabilities. 

SSK addresses these through Anchorage Digital’s custody, but extensive adoption depends on continued regulatory progress.