US Spot Bitcoin ETF Balances Are Negative without BlackRock

Why It Matters

The reliance on BlackRock underscores the fragility of Bitcoin’s institutional demand; a slowdown in its fund could trigger wider asset exits and dampen the perception that Wall Street has fully embraced crypto.

Summary

U.S. spot Bitcoin ETFs have drawn roughly $26.9 billion in net inflows this year, but the surge is heavily concentrated in BlackRock’s iShares Bitcoin Trust (IBIT). After IBIT’s inflows slowed in late October, the remaining seven ETFs collectively posted net outflows, leaving the overall balance of non‑BlackRock spot Bitcoin ETFs in the red. K33 Research’s Vetle Lunde notes that without BlackRock’s continued capital, the broader ETF market is vulnerable to rapid withdrawals. The data suggest that the recent ETF boom rests on a single dominant player rather than broad institutional adoption.