Crypto never closes, but Bitcoin, Ethereum, XRP and Solana now move on Wall Street time

Bitcoin trades nonstop, but a decade of data shows its volatility increasingly follows Wall Street’s clock.

A recent study found that the nine hours from 13:00 to 21:59 UTC accounted for 50.6% of Bitcoin’s daily realized variance between 2022 and 2025, up from 38.4% in 2016-2018. Those hours represent just 37.5% of a full day, suggesting price discovery has become increasingly concentrated while Bitcoin itself continues trading around the clock.

The research, based on 87,672 hourly observations from Kraken’s XBT/USD market between 2016 and 2025, found the shift extends beyond higher activity during American business hours. Bitcoin’s volatility peak now moves when New York changes its clocks and fades when the New York Stock Exchange closes, tying the market’s most active period increasingly closely to the US equity calendar.

That pattern has developed alongside the institutionalization of crypto through regulated futures, publicly traded companies and US-listed investment products. The study stops short of assigning the change to any single channel, leaving ETF creation and redemption, futures activity, market-maker hedging and other institutional flows as potential drivers.

Bitcoin’s volatility clock started following New York