The REX-Osprey Solana Staking ETF (SSK), the first U.S.-listed ETF to combine spot Solana (SOL) exposure with on-chain staking rewards, has surpassed $100 million in assets under management (AUM). Launched on July 2, 2025, the ETF reached this milestone in just 12 trading days, signaling a growing interest from Wall Street in crypto staking and blockchain-native investment products.

SSK is registered under the Investment Company Act of 1940, which allows the fund to distribute staking income as dividends, attracting investors seeking yield. This structure differs from most crypto ETFs registered under the Securities Act of 1933, which restricts the distribution of staking rewards. The ETF provides investors with a convenient and cost-effective way to gain exposure to Solana, avoiding the complexities of managing crypto wallets and private keys. It offers 100% Solana exposure and is fully secured in cold storage.

The ETF's rapid growth reflects a broader trend of institutional investors showing increased interest in staking-based returns as an alternative to traditional fixed income. With global interest rates stabilizing, Bitcoin price gains slowing, and regulatory clarity emerging in the U.S., asset managers are exploring crypto yield strategies to enhance returns.

Greg King, founder and CEO of REX Shares, highlighted the ETF's growth as evidence of investor demand for blockchain-native investment products in familiar formats. He noted that SSK is "opening the door for mainstream investors to access the power of Solana staking through the familiar ETF wrapper".

SSK participates in native, on-chain staking of Solana through institutional validator partners. Staking rewards are distributed to investors in monthly cash distributions. The fund seeks to hold the majority of its assets in directly staked SOL, a portion in exchange-traded products that themselves stake SOL, and a smaller amount in liquid staking tokens.

The ETF's success coincides with a renewed surge in Solana's price, which has climbed above $200 for the first time since January 2025. This rally has pushed Solana's market capitalization to over $100 billion, solidifying its position as a major digital asset. On-chain activity also supports this bullish momentum, with the total value locked in Solana-based DeFi protocols surpassing $10 billion.

In addition to SSK, 3iQ Corp offers a Solana Staking ETF that aims to provide a user-friendly and secure way for investors to participate in the Solana network and generate passive rewards through staking. This ETF also seeks to provide long-term capital appreciation.

The REX-Osprey SOL+ Staking ETF's achievement signifies a shift in investor sentiment and the increasing maturation of the cryptocurrency market. By blending the growth potential of spot Solana with the yields of on-chain staking within a regulated U.S. ETF framework, SSK has set a new benchmark.