REX Shares and Osprey Funds have submitted an updated filing for a proposed SEI Staked ETF, advancing one of the more specialized staking-wrapped fund structures currently working through the regulatory pipeline. The update, documented in a report published on September 28, 2026, signals continued intent from both asset managers. An amended submission, however, does not constitute approval, an exchange listing, or any guarantee that the product will ultimately become available to investors.

A Strategy Extending Across Proof-of-Stake Assets

Both firms have been active in the staking ETF space, previously pursuing staking-wrapped structures for other proof-of-stake assets. The SEI Staked ETF represents an extension of that strategy to the SEI network, a layer-1 blockchain with its own native staking mechanism. Staking is the process by which token holders commit assets to help validate transactions and secure a proof-of-stake network, earning rewards in return, and it is a core operational feature of chains like SEI.

An updated filing indicates that the proposal remains active and that the two firms are refining the structure in response to feedback or procedural requirements. It does not mean that a regulator has ruled on the application, assigned an effective date, or approved the fund for trading. Until such steps occur, the product exists only as a proposal.

What a Staked SEI ETF Would Offer

The product's name combines two distinct components: spot exposure to the SEI and a staking yield layer. In concept, a staked ETF would hold SEI and participate in network validation, passing some portion of the resulting staking rewards through to fund shareholders. Any such arrangement would remain subject to fees, custody arrangements, and applicable regulations. Part of the structure's appeal, were it to reach the market, is convenience: staking-linked exposure would be obtainable through an ordinary brokerage account rather than through self-managed wallets and validator setups.

Staking yield in proof-of-stake networks is not fixed. Reward rates depend on total network stake, validator performance, and protocol parameters, all of which can change over time. The final expense ratio, staking mechanics, reward distribution method, and risk disclosures for any live product would only be established in final fund documents, which, based on the available information, had not been published at the time of the filing.

SEC Review of Comparable Filings

The SEC's ongoing review of Ethereum and Solana staking ETFs from the same firms provides relevant precedent for how regulators are approaching staking yield within a registered fund wrapper. Key open questions include custody arrangements, validator selection, and how staking rewards are classified. Neither of those reviews had produced a final decision at the time of the SEI amendment, and the SEI proposal touches on the same unresolved issues.

What to Watch After the Updated Filing

The amended submission opens a review window during which the regulator may request further amendments, issue comment letters, or allow the filing to go effective. None of those outcomes is guaranteed on any particular timeline.

Investors and DeFi participants tracking the proposal should monitor for three developments: additional amendments to the filing, a regulatory decision or notice of effectiveness, and final prospectus documents. Those documents would specify the fund's ticker, its exchange listing, the fee structure, and the staking methodology. Until they are made public, the product remains a proposal with no confirmed structure.

The broader staking ETF category is still being defined procedurally. The outcome of related filings, including those for ETH and SOL staking vehicles, may in turn influence how the SEI application is evaluated.

Source: DefiLiban