Bitcoin exchange reserves fall further as US trading hours reshape global flow
CoinGlass data shows sustained bitcoin outflows from major exchanges even as US-session volume surges nearly sixfold on Binance.
Bitcoin held on centralised exchanges continued to decline over the weekend, according to data from analytics platform CoinGlass, even as trading volumes tied to US market hours climbed sharply. The combination points to a market where coins are being withdrawn from custodial venues at the same time as short-term positioning intensifies, a pattern that traders and market-structure analysts tend to watch closely around macroeconomic catalysts.
Exchange balances keep shrinking
As of 4:30am ET on Sunday 26 July (8:30am UTC), total bitcoin reserves across major exchanges stood at roughly 2,481,594 BTC, CoinGlass figures show. Net outflows were recorded across every timeframe measured: about 4,637 BTC left exchanges over 24 hours, 4,624 BTC over seven days, and 598 BTC over the trailing 30 days.
Coinbase Pro remained the largest single venue by holdings, with approximately 850,356 BTC on its books, but still recorded a daily net outflow of about 231.62 BTC and a weekly outflow of roughly 2,024.74 BTC. Binance, holding around 647,167 BTC, saw a daily outflow of about 127.01 BTC and a weekly outflow of some 2,426.67 BTC — the largest seven-day drawdown among the venues reported.
Bitfinex, ranked third with roughly 416,734 BTC, was the exception on a daily basis, posting a small net inflow of about 8.88 BTC. Its weekly figure, however, still showed a net outflow of around 183.68 BTC, keeping it in line with the broader trend across the sector.
Among smaller venues, Kraken, bitFlyer and Bithumb registered modest daily inflows of roughly 91 BTC, 16 BTC and 14 BTC respectively. The largest daily outflow by far came from OKX, at approximately 4,120 BTC, followed by Coinbase Pro and Bybit at around 232 BTC and 215 BTC. The scale of the OKX figure was enough on its own to drive much of the day’s net decline across all venues tracked.
US trading hours pull ahead sharply
The reserve drawdown coincided with a marked shift in where bitcoin trading activity was concentrated. CoinGlass data on Binance’s BTC/USDT spot pair showed US-session volume reaching approximately $433.60 million, against $237.27 million in the European session and $92.98 million in Asia.
The prior day’s comparable figures were far lower across the board — about $63.85 million in the US, $125.90 million in Europe and $72.85 million in Asia — meaning US-hour turnover rose by roughly 579%, compared with gains of about 88% in Europe and 28% in Asia. The scale of the US-session jump left it clearly dominant in the daily volume picture, ahead of Europe and Asia in that order.
What the divergence signals for market structure
Exchange flow data of this kind does not, by itself, determine near-term price direction, but sustained withdrawals typically reduce the pool of coins readily available for immediate sale on order books. Persistent outflows alongside a surge in derivatives-linked or spot activity during US hours often reflect institutional repositioning, hedging ahead of macro data, or a broader migration toward self-custody and off-exchange settlement — dynamics that have become more visible since exchange-traded fund flows began shaping bitcoin’s daily liquidity profile.
For UK and European market participants, the pattern underscores how much bitcoin’s intraday liquidity now hinges on the US trading window, even as coins continue to migrate away from centralised platforms. Should the divergence between shrinking exchange supply and rising US-hour turnover persist, it could keep volatility elevated in the sessions most relevant to institutional desks tracking macro catalysts.
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