Bitcoin ETF inflows hit $441M, then Binance hack sparks $643M outflow

What happened

US spot bitcoin ETFs extended their positive run to a fourth session on Thursday, adding $17.07 million, Bitcoin.com News reported. The four-day total reached about $440.73 million, though the daily pace slowed from $110.34 million Monday and $175.99 million Tuesday to $137.33 million Wednesday and $17.07 million Thursday. BlackRock's IBIT led Thursday with $12.80 million, followed by Fidelity's FBTC at $10.53 million and Bitwise's BITB at $8.76 million. Grayscale's Bitcoin Mini Trust and WisdomTree's BTCW offset some of that with withdrawals of $15.35 million and $3.84 million.

The streak ended Friday. Blockonomi reported $643.33 million in bitcoin ETF outflows, reversing the four-day inflow run and leaving the week about $202.6 million in the red. IBIT lost $233.70 million, FBTC $201.04 million and ARKB $129.55 million; GBTC and BITB shed $53.32 million and $25.72 million. Trading value rose to $6.35 billion from $2.11 billion, and net assets fell to $98.14 billion from $104.27 billion.

Ether and solana funds also saw withdrawals. Ether ETFs lost $105.48 million Thursday and $155.85 million Friday, their fourth and fifth straight negative sessions. Solana ETFs shed $27.69 million Thursday and $10.74 million Friday. Zcash's ZCSH drew $14.81 million Thursday, extending its inflow streak to eight sessions, with week-to-date additions of about $22.29 million and assets of $787.66 million. XRP products added $8.43 million Thursday.

Why it matters

ETF flows are a public gauge of institutional demand, and the week's swing shows how quickly positioning can change. The four-day bitcoin inflow run pointed to accumulation through Thursday, but Friday's redemptions erased the weekly gain. The reversal came alongside the Binance security shock and a broader retreat in crypto products. The split between bitcoin's earlier cushion and heavier ether and solana withdrawals is the main signal for institutional watchers.

The figures show creations and redemptions, not investor motives. That limits how directly the Binance breach can be tied to the ETF outflows. Zcash's eight-session streak also stands out as a smaller-fund flow story that persisted through the week.

What the data shows

The bitcoin ETF week had two phases. Monday through Thursday brought inflows of $110.34 million, $175.99 million, $137.33 million and $17.07 million, for $440.73 million total. Friday's $643.33 million outflow left the five-day period about $202.6 million negative, according to SoSoValue figures cited by Blockonomi. Net assets moved from $104.27 billion Thursday to $98.14 billion Friday, reflecting flows and the market value of holdings.

Ether ETFs' full-week withdrawals reached about $431.5 million. Solana ETFs lost about $71.5 million for the week. Zcash's ZCSH took in $14.81 million Thursday, XRP products added $8.43 million and HYPE drew $3.70 million. Bitcoin traded near $77,600 on Saturday after falling below $77,000 during Friday's selloff, according to market data cited by Blockonomi.

Background

The Binance breach happened after Thursday's US stock market close, making Friday the first full session for ETF investors to react. Binance said the incident affected roughly $6.3 billion in crypto held in hot wallets. The exchange said it replenished about 90% of the assets with company resources, set aside more than $6.34 billion to cover the theft and pledged to cover all customer losses. It plans phased withdrawals from November 1, subject to security checks.

The reversal followed an uneven October for institutional crypto trading. Bitcoin.com News described the four-day inflow total as a strong weekly result after an erratic month, while noting the slowing daily pace. Zcash's streak had also been building through the week, setting up Friday as a test of whether bitcoin demand could hold through a major security event.

What is still unclear

The reports do not establish how much of Friday's bitcoin ETF outflows came from the Binance breach. Flow data shows net redemptions exceeded creations but does not reveal individual motives. Friday's withdrawals also coincided with broader market stress, including declines in US technology stocks, so the reports cannot isolate the breach as the sole cause. Price comparisons in the reports use different starting points, so the cited pullbacks are not identical weekly returns.

What to watch

Traders are watching whether bitcoin holds the $76,000 area. A move above $78,000 would be an initial stabilization sign, according to chart analysis cited by Blockonomi, while a break below $76,000 could expose lower levels. Bitcoin remained below the $81,000 to $82,000 resistance area. Ether support sits near $2,170 to $2,200, XRP near $1.20 and BNB at $690. Binance's November 1 withdrawal resumption and the next ETF flow prints are also in focus.

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