21Shares Files S-1 for Sei ETF, Eyes Staking Rewards

21shares Sei Etf S-1 Filing Summary
FieldDetail
Company21shares Sei Etf
Form TypeS-1
Filed DateAug 28, 2025
Risk Levelhigh
Pages15
Reading Time18 min
Key Dollar Amounts$50.00, $100.00
Sentimentmixed

Sentiment: mixed

Topics: Cryptocurrency ETF, Sei Network, SEI Token, Exchange-Traded Fund, Digital Assets, Staking Rewards, S-1 Filing

TL;DR

**21Shares is launching a Sei ETF, but staking rewards are a big 'if' – proceed with caution on this speculative crypto play.**

AI Summary

The 21Shares Sei ETF (the "Trust") is an exchange-traded fund seeking to track the performance of Sei tokens (SEI), the native token of the Sei Network, as measured by the CF SEI-Dollar Reference Rate – New York Variant. The Trust aims to reflect rewards from staking a portion of its SEI, though the Sponsor, 21Shares US LLC, has not yet determined if staking can be conducted as a public trust without undue legal or regulatory risk, including jeopardizing its grantor trust tax status. The Trust will hold SEI and value its shares daily based on the Pricing Benchmark, which is calculated by CF Benchmarks Ltd. On an unspecified date in 2025, the Pricing Benchmark was $[]. The Sponsor, as Audit Seed Investor, purchased 2 Shares at $50.00 per share, totaling $100.00, which were later redeemed for cash. An affiliate of the Sponsor, the Initial Seed Creation Investor, intends to acquire initial seed creation baskets comprising an unspecified number of Shares, with total proceeds expected to be $[] to purchase SEI. The Trust is not an investment company under the 1940 Act, nor a commodity pool under the CEA, meaning investors lack certain regulatory protections.

Why It Matters

This S-1 filing signals 21Shares' intent to launch another cryptocurrency-backed ETF, expanding the accessible investment vehicles for digital assets beyond Bitcoin and Ethereum. For investors, it offers a regulated way to gain exposure to the Sei Network's native token, SEI, potentially including staking rewards, which could enhance yield. This move intensifies competition in the burgeoning crypto ETF market, particularly for altcoins, and could set a precedent for other Layer 1 blockchain tokens seeking similar investment products. Employees and customers of 21Shares and the broader crypto ecosystem will watch closely for regulatory approval and market reception.

Risk Assessment

Risk Level: high — The filing explicitly states, "AN INVESTMENT IN THE TRUST INVOLVES SIGNIFICANT RISKS AND MAY NOT BE SUITABLE FOR SHAREHOLDERS WHO ARE NOT IN A POSITION TO ACCEPT MORE RISK THAN MAY BE INVOLVED WITH EXCHANGE-TRADED PRODUCTS THAT DO NOT HOLD SEI. THE SHARES ARE SPECULATIVE SECURITIES. THEIR PURCHASE INVOLVES A HIGH DEGREE OF RISK AND YOU COULD LOSE YOUR ENTIRE INVESTMENT." Additionally, the Trust is not regulated under the 1940 Act or the CEA, removing significant investor protections.

Analyst Insight

Investors should approach the 21Shares Sei ETF with extreme caution, recognizing the high speculative nature of the underlying asset and the lack of traditional investment company protections. Conduct thorough due diligence on the Sei Network itself and monitor the SEC's stance on altcoin ETFs, especially regarding the feasibility of staking within a grantor trust structure, before considering any investment.

Key Numbers

  • $50.00 — Per-Share Price (Price at which the Sponsor, as Audit Seed Investor, purchased Seed Creation Baskets)
  • 2 — Shares Purchased (Number of Shares purchased by the Sponsor as Audit Seed Investor)
  • $100.00 — Total Proceeds (Total proceeds to the Trust from the sale of Seed Creation Baskets to the Sponsor)
  • 3 — Offering Duration (Expected duration in years of the continuous offering from the original offering date)

Key Players & Entities

  • 21Shares Sei ETF (company) — Registrant and exchange-traded fund
  • 21Shares US LLC (company) — Sponsor of the Trust
  • Sei Network (company) — Layer 1 proof-of-stake blockchain
  • SEI (dollar_amount) — Native token of the Sei Network
  • CF Benchmarks Ltd (company) — Benchmark Provider for the Pricing Benchmark
  • Coinbase Custody Trust Company, LLC (company) — SEI Custodian for the Trust
  • Russell Barlow (person) — Agent for service for 21Shares US LLC
  • Allison M. Fumai, Esq. (person) — Legal counsel from Dechert LLP
  • SEC (regulator) — Securities and Exchange Commission
  • $100.00 (dollar_amount) — Total proceeds from Audit Seed Investor's purchase of Seed Creation Baskets

FAQ

What is the investment objective of the 21Shares Sei ETF?

The 21Shares Sei ETF's investment objective is to track the performance of SEI, the native token of the Sei Network, as measured by the CF SEI-Dollar Reference Rate – New York Variant, adjusted for expenses and liabilities, and to reflect rewards from staking a portion of the Trust’s SEI.

Who is the Sponsor of the 21Shares Sei ETF?

The Sponsor of the 21Shares Sei ETF is 21Shares US LLC, which is a wholly-owned subsidiary of 21co Holdings Limited (formerly known as Amun Holdings Limited).

Will the 21Shares Sei ETF engage in staking activities?

The Sponsor intends to reflect rewards from staking a portion of the Trust’s SEI, but has not yet determined that staking can be conducted as a public trust without undue legal or regulatory risk, such as jeopardizing the Trust’s ability to qualify as a grantor trust for tax purposes.

What is the role of Coinbase Custody Trust Company, LLC for the 21Shares Sei ETF?

Coinbase Custody Trust Company, LLC, referred to as the “SEI Custodian,” will hold all of the Trust’s SEI on the Trust’s behalf.

Is the 21Shares Sei ETF regulated under the Investment Company Act of 1940?

No, the 21Shares Sei ETF is not an investment company registered under the Investment Company Act of 1940, and is not subject to regulation under the 1940 Act, meaning investors will not receive the regulatory protections afforded by such companies.

How will shares of the 21Shares Sei ETF be created and redeemed?

Shares can be purchased in cash by Authorized Participants depositing cash, which instructs a SEI Counterparty to buy and deposit SEI. Alternatively, Authorized Participants can purchase shares in-kind by delivering SEI. Redemptions can also be in cash, where SEI is sold by a SEI Counterparty, or in-kind, where SEI is delivered to the Authorized Participant.

What was the initial seed investment in the 21Shares Sei ETF?

The Sponsor, as Audit Seed Investor, purchased Seed Creation Baskets comprising 2 Shares at a per-Share price of $50.00, resulting in total proceeds to the Trust of $100.00. These Seed Creation Baskets were later redeemed for cash.

What are the primary risks associated with investing in the 21Shares Sei ETF?

An investment in the Trust involves significant risks, as the shares are speculative securities and investors could lose their entire investment. The Trust is not regulated under the 1940 Act or the CEA, and the Sponsor is not subject to a fiduciary standard of care, removing traditional investor protections.

How is the price of SEI tracked by the 21Shares Sei ETF?

The Trust seeks to track the performance of SEI as measured by the CF SEI-Dollar Reference Rate – New York Variant (the “Pricing Benchmark”), which is calculated by CF Benchmarks Ltd based on an aggregation of executed trade flow of major SEI trading platforms.

What is the expected duration of the continuous offering for the 21Shares Sei ETF?

The offering of an indeterminate amount of the Trust’s Shares is intended to be a continuous offering and is not expected to terminate until three years from the date of the original offering, unless extended as permitted by applicable rules under the 1933 Act.

Risk Factors

  • Uncertainty of SEI Regulation [high — regulatory]: The filing highlights significant uncertainty regarding the regulatory status of SEI. It is not explicitly stated whether SEI is considered a security, commodity, or other regulated asset. This ambiguity creates a risk that future regulatory actions could impact the Trust's ability to hold, trade, or offer shares, potentially leading to significant disruption or cessation of operations.
  • Staking Risks and Tax Status [high — regulatory]: The Trust intends to reflect rewards from staking SEI, but the Sponsor has not yet determined if this can be conducted without undue legal or regulatory risk, including jeopardizing its grantor trust tax status. If staking is deemed impermissible or leads to adverse tax consequences, the Trust's ability to generate yield and its overall investment strategy would be compromised.
  • Reliance on Third-Party Pricing Benchmark [medium — operational]: The Trust's Net Asset Value (NAV) is determined daily based on the CF SEI-Dollar Reference Rate – New York Variant, calculated by CF Benchmarks Ltd. Any errors, manipulation, or unavailability of this benchmark could lead to inaccurate NAV calculations, investor confusion, and potential trading disruptions.
  • Lack of Investor Protections [high — regulatory]: The Trust is not registered as an investment company under the Investment Company Act of 1940 or as a commodity pool under the Commodity Exchange Act. This means investors will not benefit from the protections afforded by these regulatory frameworks, such as requirements for disclosure, governance, and asset segregation.
  • Custody of SEI Assets [high — operational]: The Trust's SEI will be held by a custodian. The security and integrity of the SEI held in custody are critical. Any loss, theft, or unauthorized access to the SEI held by the custodian could result in a total loss of the Trust's assets.
  • Volatility of SEI Token Price [high — market]: The value of SEI is subject to extreme price volatility inherent in the cryptocurrency market. The price of SEI can fluctuate significantly due to market sentiment, technological developments, regulatory news, and other factors, leading to substantial losses for investors.

Industry Context

The cryptocurrency ETF market is rapidly evolving, with increasing institutional interest in digital assets. However, regulatory scrutiny remains high, creating a challenging environment for new product launches. Competitors are offering ETFs tracking various cryptocurrencies, but the specific focus on SEI places this ETF in a niche segment of the market.

Regulatory Implications

The Trust faces significant regulatory uncertainty surrounding the classification of SEI and the permissibility of staking activities within a grantor trust structure. Failure to navigate these complexities could lead to enforcement actions, operational disruptions, or a fundamental change in the Trust's investment strategy and tax status.

What Investors Should Do

  1. Review the specific risks associated with SEI's regulatory status and price volatility.
  2. Understand the implications of the Trust not being registered under the 1940 Act or CEA.
  3. Evaluate the potential impact of staking rewards and associated risks on the Trust's overall performance.

Key Dates

  • 2025: Pricing Benchmark Date — The date on which the CF SEI-Dollar Reference Rate – New York Variant was established, serving as the basis for valuing the Trust's SEI holdings.

Glossary

Grantor Trust
A type of trust where the grantor (the person who creates the trust) retains certain rights or benefits, often allowing for pass-through tax treatment where income is taxed directly to the grantor. (The Trust aims for grantor trust tax status, which could impact how profits and losses are recognized by investors. Any change to this status could have significant tax implications.)
CF SEI-Dollar Reference Rate – New York Variant
A specific benchmark rate calculated by CF Benchmarks Ltd. that measures the value of SEI against the US Dollar, with a New York time variant. (This is the primary benchmark used to determine the daily Net Asset Value (NAV) of the Trust's shares, directly impacting how the Trust's performance is valued.)
Seed Creation Baskets
The initial units of creation for an ETF, typically purchased by seed investors to establish the fund's initial assets and share price. (These baskets are used to acquire the initial SEI holdings for the Trust. The terms of their creation and redemption are crucial for the Trust's launch and initial operations.)
Audit Seed Investor
An investor who purchases an initial seed creation basket, often for audit and testing purposes before the public offering. (The Sponsor acted as the Audit Seed Investor, purchasing 2 shares at $50.00 each, demonstrating the initial share price and the Sponsor's early involvement.)
Initial Seed Creation Investor
An investor, distinct from the Audit Seed Investor, that acquires initial seed creation baskets to facilitate the launch of the ETF. (This investor is expected to acquire a significant portion of the initial SEI for the Trust, with proceeds of $[] intended for this purpose.)

Year-Over-Year Comparison

This is the initial S-1 filing for the 21Shares Sei ETF, therefore, no comparative data from a previous filing is available. Key metrics such as revenue, margins, and historical risk factors will be established upon commencement of public trading and subsequent filings.

Filing Stats: 4,548 words · 18 min read · ~15 pages · Grade level 15.9 · Accepted 2025-08-28 16:39:59

Key Financial Figures

  • $50.00 — rising 2 Shares at a per-Share price of $50.00 as described in “ Audit Seed/Init
  • $100.00 — ale of these Seed Creation Baskets were $100.00. Delivery of the Seed Creation Baskets

Filing Documents

RISK FACTORS

RISK FACTORS 15 SEI, SEI MARKETS AND REGULATION OF SEI 70 THE TRUST AND SEI PRICES 79 NAV DETERMINATIONS 82 ADDITIONAL INFORMATION ABOUT THE TRUST 85 THE TRUST’S SERVICE PROVIDERS 89 CUSTODY OF THE TRUST’S ASSETS 91 PRIME BROKER 93 FORM OF SHARES 97 TRANSFER OF SHARES 98 AUDIT SEED/INITIAL SEED CREATION INVESTOR 99 PLAN OF DISTRIBUTION 100 CREATION AND REDEMPTION OF SHARES 102

USE OF PROCEEDS

USE OF PROCEEDS 109 110 CONFLICTS OF INTEREST 111 DUTIES OF THE SPONSOR 113 LIABILITY AND INDEMNIFICATION 115 PROVISIONS OF LAW 117 MANAGEMENT; VOTING BY SHAREHOLDERS 118 BOOKS AND RECORDS 118 119 FISCAL YEAR 119 GOVERNING LAW; CONSENT TO DELAWARE JURISDICTION 119 LEGAL MATTERS 119 EXPERTS 119 OTHER MATERIAL CONTRACTS 120 UNITED STATES FEDERAL INCOME TAX CONSEQUENCES 121 PURCHASES BY EMPLOYEE BENEFIT PLANS 126 INFORMATION YOU SHOULD KNOW 127 SUMMARY OF PROMOTIONAL AND SALES MATERIAL 127 INTELLECTUAL PROPERTY 128 WHERE YOU CAN FIND MORE INFORMATION 129 PRIVACY POLICY 130 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM APPENDIX A A-1

INFORMATION NOT REQUIRED IN PROSPECTUS

PART II INFORMATION NOT REQUIRED IN PROSPECTUS II-1 This Prospectus contains information you should consider when making an investment decision about the Shares of the Trust. You may rely on the information contained in this Prospectus. The Trust and the Sponsor have not authorized any person to provide you with different information and, if anyone provides you with different or inconsistent information, you should not rely on it. This Prospectus is not an offer to sell the Shares in any jurisdiction where the offer or sale of the Shares is not permitted. The Shares of the Trust are not registered for public sale in any jurisdiction other than the United States. Until 25 calendar days after the date of this Prospectus, all dealers effecting transactions in the Shares, whether or not participating in this offering, may be required to deliver a prospectus. This requirement is in addition to the dealer’s obligation to deliver a prospectus when acting as underwriters and with respect to unsold allotments or subscriptions. i REGARDING FORWARD-LOOKING STATEMENTS This Prospectus includes “forward-looking statements” that generally relate to future events or future performance. In some cases, you can identify forward-looking statements by terminology such as “may,” “will,” “should,” “expect,” “intend,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential” or the negative of these terms or other comparable terminology. All statements (other than statements of historical fact) included in this Prospectus that address activities, events or developments that will or may occur in the future, including such matters as movements in the digital asset markets and indexes that track such movements, the Trust’s operations, the Sponsor’s plans and references to the Trust’s future success

View Full Filing

View this S-1 filing on SEC EDGAR

View on ReadTheFiling | About | Contact | Privacy | Terms

Data from SEC EDGAR. Not affiliated with the SEC. Not investment advice. © 2026 OpenDataHQ.