Markets that rest and markets that don't
The crypto market trades around the clock, with no weekends or holidays. The US stock market's regular session, by contrast, opens only on weekdays and closes for weekends and US holidays. Even with pre-market and after-hours sessions, most trading stops from Friday evening to early Monday. In Korean time, the US Friday session ends early Saturday morning and the next regular session opens Monday night. Korean stocks also close on weekends, so over the weekend only crypto and some 24-hour products keep repricing. That difference leaves several marks on charts.
What piles up over the weekend
News does not stop when markets close. Policy announcements, geopolitical changes and company reports released over the weekend cannot show up on stock charts until the next trading day. Crypto prices sometimes react to the same news first, so some people read weekend crypto moves as a clue to market mood. But crypto and stocks have different participants and structures, and there is little basis for thinking weekend crypto action tells you where stocks will head on Monday. Use it as one clue at most, never as the whole picture.
How the Monday gap forms
Weekend information lands on the next session's open all at once, so Monday's open can start far from Friday's close. For investors in Korea the order is unusual. The Korean market opens first on Monday morning and reacts to weekend news, and the US regular session opens that night. A typical scene is large Korean names such as Samsung Electronics or SK Hynix moving during the Korean day, followed by large US tech stocks opening with a gap that night. With no daily price limit in the US, big news can mean a big gap, and when a US holiday falls on a Monday the pause lasts one more day.
Reading weekend prices on 24-hour products
On crypto exchanges and similar venues, some products designed to track real stock prices trade through the weekend. The problem is that while the real stock market is closed, no new reference price exists to track. Prices during that time are whatever participants in that product trade with each other, and thin trading lets small orders move them a lot. When the real market reopens, the product is pulled toward the actual stock price, and a large difference between the weekend price and the real open can appear. With leverage, that brief move can trigger forced liquidation.
- First check whether the real stock market is open
- Weekend prices are estimates among participants
- Check whether volume and order book depth are thinner than on weekdays
- Find out how funding and the reference price are set
Weekday nights still have price signals
Unlike weekends, weekdays offer several reference prices even when the regular session is closed. US stock index futures trade nearly around the clock on weekdays, and the trading week begins on Sunday evening US time, so prices are already moving by Monday morning in Korea. There are also pre-market and after-hours sessions, and some Korean brokerages have offered services for trading US stocks during the Korean daytime. These hours are thinly traded, though, so prices jump more easily than in the regular session, and whether such services run, and when, can change, so check official guidance.
Differences in chart calculations
Whether a market trades on weekends also affects indicator math. Crypto produces seven daily bars a week; stocks produce five. So the same 20-day moving average covers about three weeks for crypto and about four weeks for stocks. Weekly bars contain different numbers of days, and the time at which a crypto chart ends its day can vary from screen to screen. Keep these differences in mind when comparing crypto and stocks with identically configured indicators.
- The same period setting covers a different number of calendar days
- Weekly and monthly bars contain different numbers of bars
- The daily cutoff time for crypto can differ by data source
- A stock's weekly bar is shorter in a week with a holiday
Checking with this site's live tools
The global markets and FX overview shows where major indexes finished on Friday and how Monday unfolds. Opening the stock buy and sell signals tool and the crypto buy and sell signals tool side by side around the same dates lets you see how bar construction differs between a market that never closes and one that does. The tools' signals are results of published rules and do not predict the future.
Summary and caution
Crypto never rests; stocks do. Information that builds up during the pause tends to crowd into Monday's open and create gaps, and weekend prices on 24-hour products are values set among participants without a reference price. Products that track stock prices are regulated differently from country to country, residents of Korea, among others, may be restricted from using them, and leverage can wipe out your entire stake. This article only explains concepts for reading charts and does not recommend using or trading any product. It is not investment advice.
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