Why Bitcoin's Price Differs Between Exchanges: 18 Venues Checked Every Minute

Bitcoin does not have one price. Every exchange runs its own order book, and the books are held together only by traders who move money between them. Vultax read the books of 18 exchanges every minute from 19:16 UTC on 12 September to 22:57 UTC on 13 September 2026. Most of the time the large venues sat within a basis point, a hundredth of a percent, of each other, and the gap between the highest and lowest of 16 ordinary venues had a median of 5.8 basis points: about $45 on a bitcoin near $77,000.

A few venues sit apart for reasons you can name. Upbit, a Korean exchange where Bitcoin trades against won, ran a median 1.31% above the others once its price was converted to dollars. HTX sat a median 2.9 basis points high. BitMEX's price in this set comes from a perpetual swap, not a spot market, and ran about 5 basis points low.

None of it is free money. In 1,029 readings of five major venues over the past week, Vultax's live crypto pack never found a gap that survived a 10-basis-point taker fee on each side of the trade.

The readings come from Vultax's own market-data service, which keeps an order book for Bitcoin against USDT on each exchange it connects to. Every 60 seconds Vultax recorded each venue's midpoint, halfway between its best bid and best ask, along with its spread. A reading was used only when at least ten venues had refreshed their book in the previous 60 seconds; 1,095 of 1,594 readings qualified.

Each venue is compared with the median of the 16 ordinary venues. Upbit and BitMEX are shown against that median but kept out of it, because one is converted from another currency and the other is a derivative.

Nine of the 18 venues stayed within one basis point of the pack on at least 80% of readings: Binance, Bitget, Bitrue, BTSE, Bybit, Gate, Kraken, OKX and WhiteBIT. Coinbase and Poloniex were just as close on midpoint but carried the widest ordinary spreads, 1.7 and 4.1 basis points, so the price you could actually trade at was further away than the midpoint suggests.

Download table figures:CSVJSON with sources

Each large offset has an ordinary explanation, and none of them is a price error.

• Upbit - Bitcoin on Upbit trades against Korean won. Converted at a live won–dollar rate, it ran between 1.07% and 1.53% above the pack, with a median of 1.31%. Cross-border gaps like this are long documented: in their study of 2017 and 2018, Makarov and Schoar found price gaps far larger across countries than within them and tied them to limits on moving capital. The premium measures a border, not Bitcoin.
• BitMEX - the book in this set is XBTUSDT, a perpetual swap, whose price is held near spot by periodic funding payments rather than by traders moving coins between spot books. A derivative a few basis points from spot is not comparable to a spot quote.
• HTX - a median premium of 2.9 basis points on Bitcoin that became a discount of about 6.5 basis points on Ether. A venue-specific offset, not a signal about the market.
• CoinEx - about 2.4 basis points low, and more than 5 basis points away on 13.6% of readings.

Ether's venues were further apart. Across 364 readings with ten fresh books, the gap between the highest and lowest ordinary venue had a median of 9.9 basis points, against 5.8 for Bitcoin. HTX, high on Bitcoin, was 6.5 basis points low on Ether, and BitMEX's Ether contract was 6.1 low. Ether books refreshed less often in this feed, which is why fewer readings qualified.

The gap between the highest and lowest venue was narrowest in the U.S. evening, about 4 basis points at 19:00 and 21:00 UTC, and widest in the Asian morning and European working day, about 8 basis points at 05:00 and between 09:00 and 11:00 UTC. With 28 hours of data each hour was observed once or twice, over a weekend, so read the shape rather than the exact values.

Download chart figures:CSVJSON with sources

A gap is worth closing only if it is wider than the cost of closing it. Vultax's live crypto pack checks this every ten minutes across Coinbase, Kraken, OKX, Binance and Bybit: it buys at the cheapest venue's ask, sells at the dearest venue's bid, and charges an assumed 10-basis-point taker fee on each side. Across 1,029 readings from 6 to 13 September, the gross gap between those five venues had a median of 3.3 basis points and never exceeded 16.6. After fees the result had a median of −16.7 basis points, and the best single reading was −7.0. None was positive.

Two more things work against anyone trying. The books in this study were typically 48 seconds old when read, so a gap on a screen may already have closed, and moving coins or dollars between exchanges takes minutes at best. Why most crypto arbitrage spreads are not executable walks through each deduction, and liquidity is not volume explains why the size behind a quote matters as much as the price.

Four practical points follow from the readings.

• A large venue's price is the market price - on Binance, Bybit, OKX, Kraken and the rest of the pack the midpoint was within about a basis point of the median almost all the time.
• Check what you are looking at - a perpetual swap, a won market converted to dollars, or a thin USDT book can each show a different number for honest reasons.
• An averaged price hides the differences - Vultax's spread research compares venues book by book, with spreads and depth, rather than blending them into one figure.
• Regional premiums are about moving money - Upbit's 1.31% says more about getting capital into Korea than about Bitcoin.

Source: Vultax's market-data service, polled every 60 seconds for Bitcoin and Ether against USDT from 19:16 UTC on 12 September to 22:57 UTC on 13 September 2026. Each venue's book is a periodic snapshot; the median snapshot was 48 seconds old when read and one in ten was more than three minutes old, which is why readings with fewer than ten books under 60 seconds old were discarded. USDT is treated as equal to one dollar. Upbit is converted from won at the service's live exchange rate; BitMEX is its XBTUSDT perpetual swap.

The executable check comes from a separate Vultax measurement, the live crypto pack, which assumes a 10-basis-point taker fee per side on every venue; real fee tiers vary by venue and by trader. Twenty-eight hours over a weekend is a short window, and hour-of-day figures and venue offsets can change. Nothing here is a recommendation to trade. Challenge a figure at [email protected]; material changes are logged in the changelog.