Which ETFs led weekly outflows?

TLDR

BlackRock iShares Bitcoin Trust (IBIT), Bitwise Bitcoin ETF (BITB), and ARK 21Shares Bitcoin ETF (ARKB) led last weeks spot Bitcoin ETF outflows, with IBIT at about $240.3 million outflow, BITB $115.1 million, and ARKB $100.7 million per a weekly flow summary. See the breakdown in this crypto markets report.

1. US spot Bitcoin ETFs saw about $497.05 million net outflows for the week of Dec 1519 per this weekly tally.
2. Fidelity Wise Origin Bitcoin Fund (FBTC) was the notable exception, with $33.1 million inflows in the same week per the report above.
3. Daily data around Christmas showed continued selling, with multi?day outflows highlighted in a holiday flows recap.

Deep Dive

1. Weekly Totals

The US spot Bitcoin ETF complex recorded net outflows of about $497.05 million between Dec 1519. This figure comes from consolidated ETF flow tracking that attributes the largest withdrawals to IBIT, BITB, and ARKB. See the full breakdown in the weekly flows report.

1. IBIT: $240.3 million outflow.
2. BITB: $115.1 million outflow.
3. ARKB: $100.7 million outflow.
4. HODL, GBTC, and BTC together: $74.1 million outflows.

Only FBTC showed $33.1 million inflows per the same weekly summary.

2. Ongoing Daily Pressure

Daily prints around the holiday period continued to show net outflows, reinforcing the weekly picture of cautious positioning and thin liquidity. Coverage noted nearly $500 million out last week and ongoing daily withdrawals amid the holiday lull. See the market update.

1. Multi?day outflows into Christmas were tracked, with only brief mid?week inflow spikes.
2. Year?end positioning and tax?loss harvesting were cited as drivers in additional flow recaps.

3. Cross?Asset and Product Notes

Flows were not uniformly negative across all products or assets. While Bitcoin ETFs had broad outflows, FBTC registered inflows, and some coverage flagged mixed behavior across Ether products in the same window.

1. The weekly Bitcoin leaders and FBTC inflows are detailed in the weekly flows breakdown.
2. Additional daily context around the holiday period appears in this market recap.

Conclusion

Last weeks ETF selling was led by IBIT, BITB, and ARKB, totaling about $497.05 million in net outflows for US spot Bitcoin ETFs, with FBTC a notable inflow outlier. Flows during holiday trading are often noisy; the key next step is to watch whether netflows stabilize in the first sessions after the holiday period per the weekly and daily updates linked above.