Which ETFs led outflows this week?

TLDR

The biggest outflows this week were led by BlackRocks iShares Bitcoin Trust (IBIT), with Ark 21Shares (ARKB), Grayscales GBTC, and Fidelitys FBTC also showing notable redemptions on the key outflow session of 31 Dec, per coverage that cites SoSoValue data (CryptoNews).

1. On 31 Dec, US spot Bitcoin ETFs saw about $348.1 million in net outflows (Yahoo Finance).
2. Leaders that day: IBIT (~$99.05m out), ARKB (~$76.53m out), GBTC (~$69.09m out), FBTC (~$46.58m out) (CryptoNews).
3. Flows were mixed midweek, with a prior session showing $355 million net inflows that ended a seven?day outflow streak (Cointelegraph).

Deep Dive

1. Who Led Outflows

On the main outflow day this week (31 Dec), IBIT topped redemptions, followed by ARKB, GBTC, and FBTC. Coverage of issuer?level prints attributed about $99.05m out to IBIT, ~$76.53m to ARKB, ~$69.09m to GBTC, and ~$46.58m to FBTC (CryptoNews).

2. How Big Were Outflows

The 31 Dec session registered roughly $348.1 million in net outflows across US spot Bitcoin ETFs, according to day?end tallies cited in mainstream coverage (Yahoo Finance). This followed several holiday sessions with heavier withdrawals and thin liquidity.

3. Flows Were Mixed

Flows were not one?way. The prior trading day saw about $355 million in net inflows, breaking a seven?day outflow streak; IBIT, ARKB, and FBTC led those inflows (Cointelegraph).

Conclusion

This weeks outflow leadership came from the biggest Bitcoin ETFs: IBIT, ARKB, GBTC, and FBTC, with the key print on 31 Dec driving the net weekly tone. Given the mixed pattern around the holiday period, the actionable focus is on whether redemptions continue into early next week or re?flip to inflows, which would better support market breadth.