TLDR:REX Shares launches America’s first crypto ETF with built-in staking rewards.Bloomberg analysts confirm REX-Osprey SOL ETF could debut within days.New $SSK ticker combines Solana price exposure with on-chain yield generation.Innovative 40 Act structure may inspire wave of staking-based crypto ETFs.A Solana-based ETF tied to staking rewards may debut in U.S. markets as early as this week. REX Shares has filed to launch the REX-Osprey SOL + Staking ETF, which aims to offer both SOL exposure and yield from on-chain staking. This move introduces a new category of yield-generating crypto ETFs under a ’40 Act structure. If approved, the fund would be the first of its kind to combine crypto price performance with staking income. Industry observers suggest this could mark a turning point for regulated crypto yield products in the U.S.REX Files Updated Prospectus, Launch Could Be Days AwayREX Shares filed an updated prospectus for the REX-Osprey SOL + Staking ETF, signaling readiness for immediate launch. Bloomberg analyst Eric Balchunas noted the document appeared “totally filled in,” suggesting that regulatory concerns had been addressed. The ETF’s ticker will be $SSK, designed to track Solana’s market value while generating additional returns from staking operations.Update: here’s the SEC saying it has no further comments, so they are good to launch it looks like. Wow. pic.twitter.com/EB2AzasrsD— Eric Balchunas (@EricBalchunas) June 28, 2025James Seyffart, another Bloomberg ETF expert, said the product could go live within the week. His comments reinforced growing expectations that final approval is imminent. Analysts believe the absence of major regulatory pushback may speed up the launch timeline.Unlike traditional spot crypto ETFs, the new product integrates native staking rewards from the Solana blockchain. According to REX Shares, the ETF aims to deliver returns not only from price appreciation but also from on-chain staking yields. This would allow investors to gain passive income while holding exposure to SOL price movements.Nate Geraci, President of ETF Store, stated that the structure appears to work within existing mutual fund regulations. His post suggested REX was confident the SEC had no remaining objections to the strategy. REX indicating spot sol ETF w/ staking imminent…Looks like they’re comfortable pushing forward w/ their creative ‘40 Act structure.Here we go. https://t.co/xL4DaKXWiL— Nate Geraci (@NateGeraci) June 27, 2025This approach may offer a blueprint for other staking-based ETFs in the future.Market Readiness and Institutional InterestThe filing and expected approval come during a summer of rising interest in crypto-based ETFs. Institutional appetite for regulated exposure has surged following multiple spot Bitcoin ETF approvals earlier this year. With Solana gaining momentum in both price and adoption, the timing for the $SSK ETF could prove strategic.Analysts agree this product could draw investor attention not just for crypto exposure but for the added yield element. If successful, this ETF might lead to similar offerings across other proof-of-stake blockchains. Investors and fund managers will be closely watching how this ETF performs once live. The post REX Shares Files For Solana Staking ETF, Could Go Live This Week appeared first on Blockonomi.