Bitcoin (BTC) ETFs Lose $643M in a Day After Binance Hack

By Nodora News · 31 October 2026 · Updated 1 November

US spot Bitcoin (BTC) ETFs lost a net $643 million on October 30, erasing a four-day inflow streak as investors reacted to the $6.3 billion Binance hack.

US spot Bitcoin (BTC) exchange-traded funds recorded about $643 million in net outflows on Friday, October 30, according to fund-flow data from Farside Investors. It was the first full trading session after the record $6.3 billion hack at Binance, and the single day of selling more than cancelled out the roughly $441 million the funds had taken in over the previous four sessions. Spot Ether (ETH) ETFs also lost about $156 million on the same day.

Key takeaways

• US spot Bitcoin ETFs saw a net outflow of about $643.2 million on October 30.
• BlackRock's IBIT (about $234 million) and Fidelity's FBTC (about $201 million) led the exits.
• The day wiped out a four-session inflow streak worth roughly $441 million.
• Spot Ether ETFs lost about $156 million, their second straight day of outflows.
• Bitcoin is holding near $77,000 as Binance prepares to reopen withdrawals.

What Happened to Bitcoin ETF Flows on October 30?

Spot Bitcoin ETFs let investors in traditional brokerage accounts get exposure to BTC without holding the coins themselves. Each day, issuers report how much money came into or left their funds, and trackers such as Farside add those numbers up.

From October 26 to 29, those funds had a steady run of buying, almost all of it into BlackRock's iShares Bitcoin Trust (IBIT). That changed on Friday. The day's total came to roughly $643 million leaving the products, the biggest single-day outflow of October and slightly larger than the $636 million that left on October 22.

Early tallies on Friday showed a smaller figure of around $410 million because BlackRock had not yet reported. Once IBIT's numbers came in, the total rose to about $643 million.

The Numbers: Which Bitcoin ETFs Saw Outflows?

The selling was concentrated in a handful of funds, while most smaller products reported no flows at all. Farside's figures for October 30:

• BlackRock IBIT: about -$233.7 million
• Fidelity FBTC: about -$201.0 million
• Ark ARKB: about -$129.5 million
• Grayscale GBTC: about -$53.3 million
• Bitwise BITB: about -$25.7 million
• Total: about -$643.2 million

On the Ether side, about $155.7 million left spot ETH ETFs, led again by BlackRock's iShares Ethereum Trust (ETHA) at around $76.6 million. That followed roughly $105.5 million of Ether ETF outflows a day earlier.

To keep it in proportion, US spot Bitcoin ETFs have still taken in about $57 billion in net inflows since they launched in January 2024. One heavy day is a dent rather than a mass exit.

Why Are Investors Pulling Money From Bitcoin ETFs?

The obvious backdrop is the attack on Binance, which the exchange discovered on October 29. Binance says about $6.3 billion was taken across several cryptocurrencies, including roughly 18,270 BTC. Blockchain analytics firm TRM Labs has linked the attack to the North Korean group TraderTraitor, though Binance itself has not named an attacker. You can read our full report on the Binance hack.

ETF shareholders don't hold coins on Binance. Their bitcoin sits with regulated custodians, so the hack does not directly affect them. Still, a security scare at the world's largest exchange tends to make investors more cautious across the whole market.

There are other likely reasons too:

• Profit-taking after a four-day run of inflows.
• Month-end positioning, with October set to close as a weak month for bitcoin.
• A general risk-off mood across crypto markets, with the total market down about 3.5% over 24 hours on Saturday morning.

Bitcoin Price Reaction and Market Mood

Bitcoin has held up reasonably well since Friday's outflow. On the OKX exchange, BTC was trading at about $77,280 on Saturday evening (Melbourne time), down roughly 0.9% over 24 hours. Ether was around $2,240, up about 0.5%.

Bitcoin started October near $83,500, so it is heading for a monthly loss of roughly 8%. Binance says it has set aside more than $6.34 billion to cover users' losses and that about $3 billion of the stolen assets has been frozen by partners such as Tether and Circle. That has helped calm some of the panic. Track live prices on Nodora Charts.

What to Watch Next for Bitcoin ETFs

The next few sessions will show whether Friday was a one-off reaction or the start of a longer pullback. Key things to watch:

• Monday's ETF flow data: a return to inflows, especially into IBIT, would suggest the selling was short-lived.
• Binance withdrawals: the exchange is aiming to restart withdrawals on Sunday and plans to publish proof of reserves by Monday, November 2.
• The stolen funds: large transfers of the hacked BTC or ETH could weigh on sentiment again.
• Corporate buyers: analysts expect Strategy, the largest corporate holder of bitcoin, to resume purchases after strengthening its cash position.

Flows can swing sharply from day to day, so a single session rarely sets a trend. This article is for information only and is not financial advice.

#Bitcoin #ETF #BlackRock #Binance #Ethereum

This article is general information, not financial advice.