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BlackRock and Fidelity Dominate U.S. Spot Bitcoin ETFs

Tighter trading spreads plus in-house custody at the largest issuers explain why fee promotions have failed to shift investor flows

Overview

  • The two largest issuers have captured the lion’s share of new capital and now lead the U.S. spot Bitcoin ETF market, leaving most other providers with only small shares.
  • VanEck temporarily cut HODL’s sponsor fee to zero for up to $2.5 billion or through July 31, 2026, but the promotion has produced only modest daily inflows compared with the largest funds.
  • Fidelity’s FBTC commands roughly $13 billion to $24 billion in assets while VanEck’s HODL sits near $1 billion to $1.9 billion, illustrating the scale gap that drives investor choice.
  • Large funds tend to deliver tighter bid-ask spreads and deeper order books, and custody arrangements differ in ways that matter to institutions: Fidelity uses Fidelity Digital Assets in-house custody while VanEck relies on Gemini.
  • That gap in scale and operational control is putting economic pressure on sub-$2 billion ETFs and is likely to accelerate consolidation as investors prioritize liquidity and custody over small fee savings.