21Shares SEI ETF Filing: Altcoin Race Heats Up With Staking Potential

21Shares SEI ETF is officially in motion, with the Swiss-based crypto asset manager filing an S-1 registration with the U.S. Securities and Exchange Commission (SEC) on Aug. 29.

The filing puts 21Shares in direct competition with Canary Capital, which submitted its own SEI ETF application earlier this year, marking the beginning of a fresh altcoin ETF race in the U.S.

The proposed 21Shares SEI ETF would passively track the CF SEI-Dollar Reference Rate, using data from multiple crypto exchanges to reflect the token’s market value. Coinbase Custody Trust Company will act as custodian, while the filing leaves open the possibility of staking SEI holdings to generate additional rewards. However, 21Shares said it is still evaluating potential legal and regulatory risks tied to staking.

Why SEI?

SEI is the native token of the Sei Network, a Layer 1 blockchain launched in August 2023. Built for decentralized exchanges and marketplace infrastructure, Sei aims to deliver high-performance, exchange-focused applications. The SEI token is used for gas fees, governance, and staking, making it an attractive candidate for institutional-grade investment products.

At the time of the filing, SEI traded at $0.30, up more than 4% in 24 hours, with CoinGecko ranking it 74th by market capitalization.

A Growing Altcoin ETF Wave

The 21Shares SEI ETF joins a growing list of altcoin ETF filings as issuers attempt to replicate the success of spot Bitcoin and Ethereum ETFs. VanEck, Bitwise, and Grayscale have all submitted applications targeting Solana, while others are chasing approvals for XRP, Cardano, Dogecoin, and even emerging tokens like Ondo.

Bloomberg analysts have placed the odds of approval for many altcoin ETFs above 90%, especially as the SEC explores a simplified approval framework. Under this proposed system, S-1 filings could be automatically approved after 75 days if no formal objection is issued, removing much of the back-and-forth that has slowed crypto ETF launches.

The SEI ETF Race

21Shares’ move comes just months after Canary Capital filed for an SEI ETF in April, pitching a staked version of the product that would generate passive income for holders. Justin Barlow, executive director at the Sei Development Foundation, called ETFs a “gateway for broader adoption,” saying they provide a bridge between crypto and mainstream finance.

With two competing SEI ETF applications now in play, the spotlight is firmly on the SEC’s response. If approved, these funds could offer institutional and retail investors direct exposure to SEI’s performance, while potentially boosting liquidity and awareness for the Sei Network itself.

Bottom Line

The 21Shares SEI ETF is more than another filing, it’s a signal that altcoin ETFs are entering a new phase. With potential staking rewards, Coinbase custody, and rising investor interest, SEI could soon join Bitcoin and Ethereum as part of the U.S. regulated ETF landscape.