TLDR
Fidelity Wise Origin Bitcoin Fund (FBTC) led the most recent BTC ETF outflows.
- On 12 Nov, FBTC saw about $133 million outflows, with ARKB at $85.2 million per a market update (Yahoo Finance).
- On 7 Nov, the biggest single-day outflow had FBTC at $256.6 million, followed by ARKB and IBIT (Crypto.news).
- For the weekly tally in early November, some reports show BlackRocks IBIT with the largest net outflow (~$580.98 million) (Bitcoinist).
Deep Dive
1. Latest Day
The most recent daily print showed FBTC leading outflows, with roughly $133 million withdrawn on 12 Nov, while ARKB saw $85.2 million; total spot BTC ETF outflows were about $278 million that day (Yahoo Finance).
- This fits the pattern of alternating inflow/outflow days as BTC struggled to clear the $105k area.
- Day-to-day leadership often rotates among the largest issuers depending on investor flows.
If you mean most recent day, FBTC was the leader; flows are tactical and can flip quickly.
2. Biggest Single-Day This Week
The largest single-day outflow in the past week occurred on 7 Nov with total $558.4 million exiting spot BTC ETFs, led by FBTC at $256.6 million, followed by ARKB at $144.2 million, and IBIT at $131.4 million (Crypto.news; similar figures in Tokenpost).
- This was the biggest single-day withdrawal since August, pointing to broad risk-off positioning.
- Other funds saw smaller or zero flows that day.
If you mean the largest single-day print in the last week, FBTC led that outflow session.
3. Weekly Picture
On a weekly basis in early November, several summaries show IBIT posting the largest net outflows at around $580.98 million, with FBTC next at roughly $438.30 million, and ARKB and GBTC smaller contributors (Bitcoinist).
- Other outlets similarly note IBIT, FBTC, and GBTC as primary contributors in the weeks aggregate (CryptoNews overview).
- Weekly leaders can differ from daily leaders because cumulative flows capture multiple sessions.
If you mean last week overall, IBIT appears to have led, not FBTC; specify the period to avoid mixed signals.
Conclusion
If you mean most recent daily outflow, FBTC led. If you mean largest single-day outflow this week, FBTC also led on 7 Nov. If you mean the weekly aggregate, IBIT led. The takeaway is that leadership depends on the exact window; checking the flows tape for the specific date range will align the answer to your intent.
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