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Winklevoss Twins Take Aim at Grayscale With Low-Cost Spot Zcash ETF Filing

Reported by Finance
Oct 6, 2026· 2 min read
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Key Takeaways
  • • Winklevoss Asset Services filed an S-1 registration statement with the SEC for a spot Zcash ETF (ticker: WINK) on Nasdaq, directly competing with Grayscale's existing Zcash ETF (ZCSH) through a 90% fee undercut—0.25% annual sponsor fee versus Grayscale's 2.5%.
  • • Winklevoss Capital Fund has committed nonbinding interest to purchase up to $100 million in shares at launch, signaling significant institutional backing for the proposed fund.
  • • Grayscale's Zcash ETF has accumulated approximately $890 million in net assets since launching on NYSE Arca in late August, with $233 million in inflows during its first month, demonstrating robust institutional demand for ZEC exposure.
  • • Zcash (ZEC) has surged over 735% in the past year and now ranks as the 10th-largest cryptocurrency by market capitalization at roughly $23 billion, creating a compelling investment opportunity for institutional allocators.
  • • Gemini Trust Company, an affiliate of the Winklevoss twins' cryptocurrency exchange, would serve as custodian for the proposed fund, holding ZEC directly in segregated cold storage.
Summary
The Winklevoss twins are mounting a direct competitive challenge to Grayscale Investments in the spot Zcash ETF market. Winklevoss Asset Services filed a preliminary S-1 registration statement with the U.S. Securities and Exchange Commission for a spot Zcash exchange-traded fund that would trade on Nasdaq under the ticker WINK. The filing represents a calculated strategic move to capture market share in an emerging product category by undercutting Grayscale's fee structure by 90 percentage points—proposing a 0.25% annual sponsor fee compared to Grayscale's 2.5% charge on its Zcash ETF (ZCSH).

The proposed Winklevoss fund would hold ZEC directly in segregated cold storage, with Gemini Trust Company serving as custodian. Winklevoss Capital Fund has signaled nonbinding interest in purchasing up to $100 million of shares, demonstrating the sponsors' confidence in market demand. The filing arrives amid explosive growth in Zcash demand: ZEC has surged more than 735% over the past year and now commands a market capitalization of approximately $23 billion, ranking it the 10th-largest cryptocurrency. Cypherpunk Technologies has been named as the fund's Zcash Ecosystem Partner.

Grayscale's first-mover advantage in the spot Zcash ETF space is already substantial. The product, which launched on NYSE Arca in late August, accumulated $233 million in inflows during its first month and has grown to approximately $890 million in net assets—a figure substantial enough to trigger a 3-for-1 share split. However, Grayscale's product has recently encountered outflows, with $93.56 million in withdrawals during a single week in early October, signaling potential sensitivity among investors to fee structures.

The Winklevoss filing remains subject to SEC approval before shares can begin trading. The competitive dynamic underscores how the institutional cryptocurrency ETF space continues to attract established players seeking to differentiate through fee competition and custodial infrastructure, mirroring patterns seen in traditional asset management.

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Finance Winklevoss Twins Take Aim at Grayscale With Low-Cost Spot Zcash ETF Filing