Bitcoin can move 10% on Sunday morning. Apple cannot trade on Nasdaq at the same time.
The reason is not technology. Stock exchanges could stay online. The harder part is the infrastructure behind each trade: brokers, market makers, clearinghouses, custodians, banks and corporate-action systems.
Crypto was built around continuously operating networks. U.S. equities were built around defined trading days.
That gap is narrowing. The SEC is holding a roundtable on preparations for 24-hour stock trading, including overnight liquidity, settlement and closing-price processes.
Why Crypto Can Stay Open
Bitcoin does not depend on the New York business day.
Transactions can settle whenever the network is operating, and crypto exchanges can match buyers and sellers around the clock.
Stocks work differently. The main U.S. session still runs from 9:30 a.m. to 4 p.m. ET, with pre-market and after-hours trading around it.
NYSE is already moving closer to continuous trading. NYSE plans an expanded model running roughly 23 hours a day, five days a week.
But 24-hour trading is not the same as 24/7 trading. Weekends remain harder because banks, clearing systems and institutional operations still follow business-day schedules.
The Exchange Is Only the First Layer
Suppose someone buys Nvidia stock at 2 a.m.
Matching the order is easy. Making everything behind it work normally is harder.
Overnight markets generally have fewer buyers, sellers and market makers, which can mean wider spreads and bigger price moves on smaller trades.
Nasdaq has noted that overnight trading can come with higher costs and thinner liquidity.
Then there is settlement.
U.S. stocks settle on a T+1 basis, meaning cash and securities normally change hands the next business day. Continuous trading therefore requires brokers, custodians and clearing infrastructure to remain synchronized for much longer periods.
| Layer | Main challenge |
|---|---|
| Market makers | Thin overnight liquidity |
| Clearing | Continuous processing |
| Settlement | Moving cash and securities |
| Banks | Not universally 24/7 |
| Corporate actions | Splits and dividends need processing |
| Surveillance | Monitoring overnight manipulation |
Why Markets Still Need a “Close”
Even if trading becomes nearly continuous, markets still need an official reference price.
The 4 p.m. close is used to calculate fund values, index levels, portfolio performance and many derivatives.
That is why the SEC is also examining closing-price processes, not just longer exchange hours.
Corporate actions create another issue. Dividends, stock splits and mergers need clear dates and ownership records. A nonstop exchange does not eliminate those operational requirements.
Tokenization could eventually simplify some of this. Coinpaper’s tokenized stocks explainer shows how blockchain-based securities can combine trading and settlement more closely, while NYSE is also exploring a tokenized securities venue built around continuous trading.