The REX Osprey Solana (SOL) exchange-traded fund, a financial instrument designed to track the performance of Solana, experienced a notable lack of trading volume. Data from Farside Investors indicates that zero shares changed hands on four out of six trading days up to and including August 8.
This fund, identified by the ticker symbol SSK, showed no movement on August 1, 4, 5, and 7. Activity remained subdued, with just $6.4 million in transactions on August 8, preceded by $2.7 million leaving the fund on August 6.
REX Osprey’s offering stands out as the first Solana ETF listed in the United States to incorporate native staking mechanisms. This product diverges from typical SEC-approved spot ETF structures, providing exposure to SOL through alternative methods rather than direct cryptocurrency ownership.
Institutional Reluctance
Figures compiled by CoinShares reveal that Solana-based investment vehicles have attracted $874 million in inflows since the start of the year. Despite Solana’s position as the fourth-largest cryptocurrency by market capitalization, it trails behind Ethereum (ETH) and XRP (XRP) among major altcoins.
This trading pattern may reflect a broader hesitancy among institutional investors towards Solana-specific investment products when compared to options linked to Bitcoin (BTC) and Ethereum.
Jake Kennis, a senior research analyst at Nansen, suggests that these differences stem from the portfolio allocation strategies employed by institutions. He stated in a research note:
“Ethereum is experiencing heightened activity as institutions likely held a smaller proportion of ETH compared to BTC. While Solana hasn’t been the primary focus of this recent interest, SOL ETFs could gain traction if institutions seek further diversification beyond BTC and ETH.”
Structural Complexity Hinders Adoption
The REX Osprey fund’s design, which includes staking functionalities and investments in offshore ETFs, distinguishes it from standard spot cryptocurrency products.
Eneko Knörr, founder and CEO of Stabolut, identifies these features as potential roadblocks to adoption, rather than a lack of underlying demand.
Knörr explained:
“The limited trading volume of SSK appears to be more related to branding and distribution challenges than a fundamental lack of demand. The fund’s structure, which involves staking SOL and allocating a portion to other SOL ETFs/ETPs (many located offshore), introduces a level of complexity that may deter some buyers.”
The fund’s management fee of 0.75% places it on the higher end of the expense ratio spectrum for cryptocurrency ETFs. In comparison, mainstream spot Bitcoin and Ethereum ETFs from major firms typically charge fees ranging from 0.15% to 0.25%.
Nansen’s Kennis also emphasized that this fee structure forces institutional investors to carefully weigh the costs and benefits of ETF convenience against the advantages of direct cryptocurrency exposure.
He further mentioned Solana’s staking rewards, which average around 7% annually:
“The presence of a staking component would normally be attractive, given the ‘passive’ yield that’s currently being missed.”
Market Position and Future Perspectives
The absence of major players like BlackRock and Fidelity in the Solana ETF market is contributing to limited market penetration.
REX Shares, being a smaller ETF provider, lacks the extensive distribution networks and brand recognition of the leading asset managers on Wall Street.
Knörr concludes:
“Trading activity is likely to remain sporadic until larger, more established brands enter the field. The structure, complexity, and constrained availability are holding it back – it doesn’t seem to be a lack of interest in Solana itself.”
As of August 11, the US Securities and Exchange Commission (SEC) is still evaluating applications for Solana ETFs under the 1933 Act, which may offer more favorable tax implications.


