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Fee Differences Separate Spot Bitcoin ETFs as BlackRock and Grayscale Compete on Costs

Grayscale Bitcoin Trust's 1.5% management fee creates a $1,250 annual cost gap compared to BlackRock's IBIT on a $100,000 investment.

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Investors holding spot Bitcoin exposure face contrasting cost structures between legacy products and newer funds. Grayscale Bitcoin Trust (GBTC), which converted to a spot Bitcoin ETF in January 2024, levies a 1.5% annual sponsor fee, amounting to $1,500 per year on a $100,000 position. In contrast, BlackRock’s iShares Bitcoin Trust ETF (IBIT) charges 0.25%, or $250 annually on the same amount, creating a $1,250 difference.

Both products operate as grantor trusts holding Bitcoin via custodians to track the underlying spot price, meaning sponsor fees deducted from trust assets represent the primary structural distinction over long holding periods. Over the past year, Bitcoin dropped 24.49%, with GBTC declining 25.54% and IBIT falling 24.68% as of October 19, 2026.

Flow data highlights a divergence in capital allocation. GBTC has experienced cumulative net outflows of nearly $28 billion, leaving its net assets at approximately $10.26 billion. Conversely, IBIT has accumulated over $65.5 billion in net inflows, with total net assets reaching roughly $65.27 billion, though taxable capital gains remain a switching consideration for existing GBTC holders.

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