Binance's Market Share Slides to 42% as Traders Move to OKX, Coinbase and Kraken After the $6.3B Hack

Binance's share of spot trading on the top-10 crypto exchanges fell to about 42% over the past seven days, down from roughly 48% before the October 29 hack and about 51% in mid-August, according to Kaiko data reported this week. Rivals OKX, Coinbase and Kraken all gained share as traders spread their activity across venues in the week after the US$6.3 billion theft — the largest exchange hack on record.

The shift matters because market share is the clearest public scoreboard of trader trust after a security disaster. Binance absorbed the hack without halting its business for long, but the Kaiko numbers show that even the world's largest exchange pays a price in flow when withdrawals are suspended and headlines turn hostile. Readers following the story day by day on the Zimbuck News page will recognise the pattern: the exchange that gets hacked keeps its solvency, but loses the marginal trader.

What the Kaiko numbers actually show

Kaiko's data, reported by The Edge, covers spot volume across the market's top-10 platforms over the seven days following the incident:

• Binance: ~42% of top-10 spot volume, down from ~48% before the hack and ~51% in mid-August — its lowest level in at least 12 weeks.
• OKX: ~14%, up from about 11% the prior week, the biggest single gainer.
• Coinbase: ~9.6%, up from about 9%.
• Kraken also increased its share over the same period.

Binance suspended withdrawals after the October 29 cyber-theft, which the US Federal Bureau of Investigation has attributed to North Korean hackers — an attribution North Korea denies. The exchange said it held about US$157 billion in assets as of Monday, a figure it described as internal estimates factoring in the hack, subsequent withdrawals and price moves.

Flows normalised faster than share recovered

The most important detail in Binance's own account is the timing of the flow reversal. A spokesperson said that by around 3:00 UTC on November 3, hourly deposits began exceeding hourly withdrawals again — a sign that user activity was normalising within days of the incident. In other words, the panic phase ended quickly; what has not ended is the quiet redistribution of everyday trading volume to rival venues.

That distinction is familiar from earlier exchange crises, and it is debated daily in the Zimbuck Market News group: solvency scares fade fast, but habits formed during a scare — a new account at OKX, a first Coinbase trade — tend to stick. A trader who moved during the withdrawal suspension and found comparable liquidity elsewhere has little reason to move back immediately.

Why rivals gained unevenly

OKX's jump from about 11% to about 14% is the standout move. OKX has spent two years building derivatives and spot depth outside the United States, which made it the natural overflow venue for Binance's international user base. Coinbase's smaller gain, to about 9.6%, reflects its US-regulated positioning: it captures the cautious, compliance-first segment rather than global flow. Kraken's rise fits the same pattern — a long-established venue with a clean security record benefits whenever trust, rather than fees or listings, becomes the deciding factor.

For broader context on how exchange-specific shocks ripple through the market, see our earlier coverage of Binance's France account closures, a separate, regulation-driven story that also pushed French users to compare rival venues.

What traders should watch next

Three signals will show whether this is a temporary dip or a structural reset. First, whether Binance's share stabilises near 42% or keeps sliding in Kaiko's weekly data. Second, whether the elevated OKX share holds once the news cycle moves on — flow that stays after the headlines fade is real franchise gain. Third, how the stolen funds story develops: investigators continue to track the laundered proceeds on-chain, and every new seizure or conversion headline re-opens the trust question for Binance.

None of this changes the basic lesson the week reinforced. Exchange concentration is itself a risk: keeping all trading and custody on one venue, however large, exposes a trader to that venue's worst week. Splitting activity across two or three reputable exchanges costs a little convenience and buys a great deal of resilience.

FAQ

How much market share did Binance lose?
About 6 percentage points in a week — from roughly 48% of top-10 spot volume before the hack to about 42% — and about 9 points versus mid-August's roughly 51%, per Kaiko.

Which exchange gained the most?
OKX, rising from about 11% to about 14% of top-10 spot volume. Coinbase rose to about 9.6% and Kraken also gained.

Did Binance run out of money?
No evidence of that emerged. Binance said it held about US$157 billion in assets, and by November 3 its hourly deposits again exceeded withdrawals.

Who does the FBI blame for the hack?
The FBI has attributed the October 29 theft to North Korean hackers; North Korea denies the charge.

Is my exchange choice a safety decision?
Yes. This episode shows why many traders split funds across venues and keep long-term holdings in self-custody.

Source: Kaiko data as reported by The Edge — Binance Loses Market Share to Crypto Exchange Rivals After Hack. This article is market news and general information only, not financial advice. Join the conversation on Zimbuck — the finance social platform for traders and investors.