The Bitcoin ETF complex absorbed $1.19 billion on 6 October 2025, the biggest single-day intake since July, pushing Bitcoin past $125,000 with an intraday high of $126,000 and restoring institutional size to spot and derivative order books.
BlackRock’s iShares Bitcoin Trust (IBIT) led with $969.95 million, while Fidelity’s FBTC took $112.3 million and Bitwise’s BITB $60.1 million. The session ranks second in the category’s history and is the first billion-plus day since July.
During the first six October trading days, the ETFs gathered $2.29 billion, a pace that would set a monthly record if sustained. Bitcoin closed above $125,000 after the session, underscoring the impact of the inflows on price and liquidity conditions.
Analysts aggregated that August favored Ethereum vehicles—one day logged $461 million and one week $2.85 billion against $562 million for Bitcoin—so 6 October marks a clear pivot back to Bitcoin. An ETF gives price exposure without the investor holding keys or executing spot trades.
Short-term trading conditions for Bitcoin ETFs
First of all, the narrow funnel of money into IBIT and the size of the print alter short-term trading conditions, shaping both spot execution and derivatives positioning.
Spot books feel extra bid when ETF desks route large market orders. Days that print near record inflows often settle into range-bound trade, so directional bets need hedges.
Capital cycles between ETH and BTC as relative momentum shifts. Money exits higher-fee legacy vehicles such as GBTC—down $16 billion from its peak—and enters low-fee ETFs like IBIT, which has pulled in $15 billion since launch.
The open question is whether October’s aggregate flow sets a new high. The answer will indicate whether 6 October starts a lasting shift back to Bitcoin leadership or marks a local extreme in ETF demand.
