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Banco Santander Discloses Spot Bitcoin ETF Stake in 13F Filing

Reported by Thedefiant
Jul 30, 2026· 3 min read
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Key Takeaways
  • • Banco Santander disclosed a $4.31 million position in BlackRock's iShares Bitcoin Trust (IBIT) comprising 129,615 shares as of June 30, 2026, marking the Spanish lender's first-ever spot Bitcoin ETF holding in SEC filings.
  • • The bank simultaneously revealed a $3.54 million stake in the iShares Ethereum Trust (297,947 shares) and a $1.51 million position in the iShares Gold Trust, neither of which appeared in prior quarterly disclosures.
  • • Crypto holdings represent approximately 0.05% of Santander's $16.08 billion in reported U.S. equity positions spread across 929 line items, with both digital asset positions managed by SAM Investment Holdings, the Madrid-based subsidiary overseeing Santander Asset Management.
  • • The 13F filing, submitted July 28, 2026, does not distinguish between proprietary investment and positions held on behalf of client funds or managed accounts, leaving the nature of the crypto allocation ambiguous.
  • • Santander's entry into institutional spot Bitcoin ETF ownership follows similar moves by major U.S. financial institutions, with Goldman Sachs holding $418.65 million and Morgan Stanley disclosing over $270 million in spot Bitcoin ETF positions as of prior quarters.
Summary
Banco Santander, Spain's largest banking group with over $16 billion in disclosed U.S. equity holdings, entered the institutional spot Bitcoin market for the first time by acquiring a $4.31 million position in BlackRock's iShares Bitcoin Trust. The Q2 2026 Form 13F filing, signed by group accounting head Ruben Navajo on July 28, revealed 129,615 IBIT shares as of the June 30 reporting date. The position did not appear in the bank's previous quarterly disclosure filed May 8, and a full-text SEC filing search confirms no prior Bitcoin ETF holdings.

Concurrent with its Bitcoin entry, Santander disclosed $3.54 million in Ethereum ETF exposure through 297,947 shares of the iShares Ethereum Trust, alongside a $1.51 million holding in the iShares Gold Trust. These represent inaugural positions for the Spanish lender across both digital asset classes. Both crypto ETF positions are managed by SAM Investment Holdings, the Madrid-based holding company for Santander Asset Management, which reports shared investment discretion over the shares alongside five other affiliated managers.

The crypto allocation remains minimal relative to the bank's total U.S. equity footprint. Combined Bitcoin and Ethereum holdings comprise approximately 0.05% of Santander's reported equity book spread across 929 line items. The 13F filing structure does not distinguish between proprietary trades and positions held for client accounts or managed funds, creating ambiguity regarding whether the crypto positions reflect the bank's own investment thesis or client-directed allocations through its asset management subsidiary.

Santander's institutional Bitcoin entry aligns with broader adoption among major financial services firms. Goldman Sachs held $418.65 million in spot Bitcoin ETFs as of June 30, while Morgan Stanley disclosed over $270 million in spot Bitcoin ETF positions in prior quarters. The moves follow the SEC's approval of the first 11 U.S. spot Bitcoin ETFs on January 10, 2024, which opened institutional-grade custody and trading infrastructure for large asset managers and financial institutions.

At the filing date, Bitcoin traded at $64,721, up 1.1% over the preceding 24 hours, while Ether stood at $1,918, up 1.4% intraday.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Thedefiant Banco Santander Discloses Spot Bitcoin ETF Stake in 13F Filing