Wall Street’s All-Night Pharmacy: What Does TradingView’s “24 Hours” Session Mean, and Who Trades US Stocks while New York Sleeps?

Jacek Pobłocki

Financial Analyst of Markets and Securities

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🌙 TradingView · Overnight Session · Blue Ocean ATS · 23/5 Trading · US Stocks 🌙

Picture a city at two in the morning. The malls are shut, the cafés have gone dark, the main street is empty. But on the corner, under a glowing green cross, one small window is still lit. The all-night pharmacy. Someone is waiting in line; someone else is just walking away with a receipt.

Wall Street has exactly that kind of pharmacy, and since July 2026 you can peek through its window without leaving your home.

If you use TradingView, you may have spotted something new lately. In the chart settings (Settings → Symbol → Session), next to the familiar Regular and Extended options, a third one has appeared: 24 hours. The first reaction is usually the same: hang on… New York’s exchanges don’t run around the clock. Futures have their hours, stocks have their sessions. So what’s going on?

The answer is more interesting than it seems. It isn’t a bug or a marketing gimmick. It’s the first symptom, visible right on your chart, of a quiet revolution: the US stock market is learning to work nights, and on 6 December 2026 that revolution will stop being quiet.

So switch off the overhead light and let’s take a night walk through the city that never sleeps.

A Day on Wall Street: Three Sessions in One City

Let’s start with a map of the city. America’s main stock-market street, the NYSE and NASDAQ, has its rush hours. That’s the regular session (Regular Trading Hours, RTH): from 9:30 to 16:00 New York time (ET), which is 15:30 to 22:00 Central European Time (CET). Every shop is open, the crowds are at their biggest and prices are at their most competitive. This is the slice of the day TradingView shows under the Regular setting.

Some shops, though, open earlier and close later. That’s extended-hours trading (Extended Trading Hours, ETH): the pre-market from 4:00 to 9:30 ET and after-hours from 16:00 to 20:00 ET. There are fewer customers, but you can shop before work or after dinner. For example, you can react to company earnings, which usually land just after the close. The Extended setting adds these hours to your chart.

Now do the maths: 4:00 to 20:00 is sixteen hours of trading. That leaves eight.

From 20:00 to 4:00 ET, or 2:00 to 10:00 in the morning in Central Europe, the main street is dark. For years, on the chart it looked like a gap in the city’s CCTV footage. The camera switched off in the evening and came back on at dawn. Everything that happened in between, we only saw in the morning, as a price gap.

This is where the 24 hours option comes in. It doesn’t create a new session. It simply keeps the camera rolling through the night shift.

Watch the clocks: the time difference between New York and Central Europe is usually 6 hours. Twice a year, though, it briefly drops to 5, because Europe and the US change their clocks on different dates. In autumn 2026 that’s the week between 25 October and 1 November. In spring 2027 it will be two weeks, from 14 to 28 March.Rule of thumb: in spring America switches 2–3 weeks before Europe, and in autumn a week after.

The All-Night Pharmacy: Meet Blue Ocean ATS

If the NYSE and NASDAQ are asleep at night, who on earth is selling stocks at three in the morning?

The answer hides in an abbreviation you may already know from TradingView: BOATS, short for Blue Ocean ATS. It isn’t an exchange but an alternative trading system (ATS): a private but fully licensed platform that matches buy and sell orders. It is run by a US broker-dealer, a member of FINRA, the organisation that supervises brokers in the United States.

If that sounds familiar, it should. European markets (the Warsaw Stock Exchange included) have alternative trading venues too, known in the EU as MTFs (multilateral trading facilities). A well-known example is Euronext Growth, which operates alongside Euronext’s main markets. Legally it’s a different category from a US ATS, but the principle is the same: next to the big exchange runs a smaller, separate trading floor with its own rules.

Blue Ocean launched in June 2021. Its window is open from 20:00 to 4:00 ET, Sunday to Thursday. In Central Europe that means the nights from Monday to Friday, from 2:00 to 10:00. So the first session of the week starts on Monday at 2:00, and the last one ends on Friday at 10:00 in the morning.

And this is where the all-night pharmacy metaphor fits like a glove.

• One for the whole city.For years, Blue Ocean was practically the only overnight operator. Today it has two competitors (Bruce ATS and MOON ATS), but it’s Blue Ocean that feeds its data to TradingView.
• Served through a hatch.At night you can’t say “something for a headache, whatever it costs”. At most brokers only limit orders are accepted: you say exactly what you want and the most you’re willing to pay. Market orders and stop orders can’t be placed overnight (the detailed rules depend on your broker).
• Limited stock on the shelves.In theory, you can trade a wide range of US stocks and ETFs. In practice, in August 2026 just 15 companies accounted for half of overnight volume on average.
• Night-time prices.The difference between the best bid and the best ask, the spread (bid-ask spread), is much wider at night. A BlackRock analysis of iShares ETFs found that overnight spreads were on average almost 10 times wider than during the day! A wide spread is the simplest thermometer of liquidity: there are only a few people on the other side of the window, so even a medium-sized order can noticeably move the price.

Don’t picture a tiny corner kiosk, though. In March 2026, Blue Ocean traded about 130 million shares a night on average, roughly 3.5 billion dollars. Its record night brought 250 million shares and 10 billion dollars, and the system reportedly used only 5% of its capacity. In 2023, even the Tokyo Stock Exchange bought a 5% stake in the company.

Until July 2026, BOATS overnight quotes lived in TradingView as separate symbols, such as BOATS:SPY. Hardly anyone opened them. Now TradingView has wired them into the regular stock chart. And that’s how the 24 hours option was born.

Who’s Standing in Line at the Window?

If the pharmacy is open at night, who are its customers? Americans are mostly asleep. Europeans are only just waking up.

The key to the puzzle lies on the time-zone map. When it’s 21:00 in New York, it’s 10:00 or 11:00 the next morning in Seoul and Tokyo (depending on the season). For an investor in Asia, the American “night” is the middle of the working day. Koreans even have their own name for it: “daytime US stock trading”. For them, the all-night pharmacy is simply an ordinary shop that’s open during the day.

And it’s mainly these visitors from another time zone who form the queue. Foreign investors account for 37% of overnight volume, institutions for just 7%. In August 2024, a full 65% of Blue Ocean’s volume came from South Korea alone. By 2026 that share had fallen to around 35%, as clients from more than 30 countries joined the line.

From Lionel Richie to Robinhood

Overnight trading wasn’t born yesterday. In January 2018, the US broker TD Ameritrade became one of the first to launch 24/5 trading, initially on just 12 ETFs, including SPY, QQQ and GLD. It promoted the launch in style: with a Super Bowl ad in which Lionel Richie sang about trading “All Night Long”. The campaign even won a bronze Lion at Cannes.

Then things picked up speed:

• 2021: Blue Ocean ATS launches.
• 2023: Robinhood Markets Inc. launches its “24 Hour Market” with 43 popular securities (stocks and ETFs). Four months later the list already has 95.
• 2026: overnight trading makes up about 1% of all US equity volume. Sounds modest, but it’s 358% more than a year earlier.

The all-night pharmacy is no longer a curiosity for insomniacs. It has become a place where, every now and then, events of truly epic scale play out.

Two Nights That Made History

The best way to understand the overnight market is through two real examples. The first shows why the all-night pharmacy exists in the first place. The second shows what happens when the queue gets out of hand.

The DeepSeek Night: A Record Queue

Sunday, 26 January 2025. America is getting ready for a new week when the Chinese company DeepSeek unveils a new, surprisingly cheap artificial intelligence model. Investors immediately ask themselves: does the world really need quite so many expensive Nvidia chips?

The main trading floor is closed, but at 20:00 ET (2:00 at night in Central Europe), Blue Ocean’s window opens. A queue forms instantly. That night brings record turnover: 2.7 billion dollars. Volume that large at night is a sign that real money is behind the move, not a few random trades. On Monday, Nvidia loses about 17% and roughly 600 billion dollars in value. It’s the largest one-day loss of value by a single company in the history of the US stock market.

Now picture that day on two charts. On Regular, you see Friday’s close and then a sharp gap down at Monday’s open. Like a jump cut in a film where someone removed the key scene. On 24 hours, you see the whole scene: the night in which the gap formed candle by candle on an intraday timeframe.

5 August 2024: The Window Slams Shut

The second example is less pleasant, but very instructive.

Early August 2024. The Bank of Japan has just raised interest rates, and weak US jobs data has spooked investors. On Monday, 5 August, Japan’s Nikkei index falls 12.4%. It’s the worst day since Black Monday in 1987 and the biggest point drop in the index’s history.

Crowds from all over the world rush to the only open window to sell US stocks. At 1:45 ET (7:45 in Central Europe), Blue Ocean’s system buckles under the flood of orders. Trading is halted. And then something happens that practically never happens on an exchange during the day: trades executed between 1:45 and 3:06 ET are cancelled!

It’s a textbook example of a liquidity vacuum. Everyone wants to sell at once, and there aren’t enough buyers on the other side. The price doesn’t fall smoothly. It jumps down to ever-lower bids, because there’s simply nothing in between.

It’s as if the pharmacist, faced with an endless queue, slammed the window shut and voided every receipt she had handed out. In Korea alone, trades worth about 630 billion won (around 435 million dollars) were cancelled across some 90,000 accounts. Korean brokers suspended overnight trading for more than a year, and Blue Ocean’s CEO had to apologise publicly.

How was that even possible? Overnight trades only reached the official reporting system at 8:15 ET the next day. Until then, they hung in a “grey zone” and could be reversed.

The lesson for you as a trader: candles drawn at night are real, but in an extreme situation they can be erased. Blue Ocean later replaced its technology and reportedly increased its capacity a thousandfold. Still, that night is worth remembering, because it showed that a small overnight platform is not the same thing as a big exchange.

What It Doesn’t Cover: The Petrol Station and Europe’s High Streets

Let’s go back to the question from the beginning. If TradingView now has a 24 hours option, does it apply to everything? Index futures, oil, shares from Frankfurt or Warsaw?

No. And that’s the most common source of confusion.

Futures are the motorway petrol station in our city. It was open almost around the clock long before anyone came up with an all-night pharmacy. S&P 500 or NASDAQ 100 futures on the CME trade from Sunday 18:00 to Friday 17:00 ET, with just one hour’s break a day: from 17:00 to 18:00 ET, or 23:00 to midnight in Central Europe. Their TradingView chart already shows almost the full day. The new option adds nothing here.

Shares on European exchanges (e.g. Xetra in Frankfurt, Euronext, the London Stock Exchange, SIX in Zurich or the Warsaw Stock Exchange), on the other hand, are high streets that simply shut for the night. There’s no all-night pharmacy here and no overnight trading venue to pull data from. A 24h chart has nothing to show.

That’s why the 24 hours option only appears in the settings when you meet two conditions:

• You open an instrument that supports it, i.e. a US stock or ETF with BOATS data.
• You select a low intraday timeframe, e.g. 30 minutes.

If you’re looking for it on a daily gold futures chart, you simply won’t find it. The option disappears from the interface.

A Weekend Curiosity

The petrol station and the pharmacy open at different times after the weekend. Futures start on Sunday at 18:00 ET, which is midnight in Central Europe. Blue Ocean opens two hours later. If something important happens over the weekend, only futures can react to it for the first two hours. Stocks join in a little later.

How to Read a 24h Chart: A User’s Guide to the Night Camera

Switching the option on takes one click: Settings → Symbol → Session → 24 hours, or the toggle on the chart’s bottom toolbar. The tricky part is understanding what you’re actually looking at. Night-camera footage is grainy. It shows the truth, but in poor light.

Here’s what to watch out for.

• The daily bar doesn’t change. The 24h session only works on intraday timeframes. Daily, weekly and monthly charts still show the exchange’s main session.
• Volume bars look different. Under the night candles you’ll see low volume bars, because that’s volume from a single overnight venue. Next to them, the morning volume from the regular session looks huge, and the volume average (e.g. over 20 candles) drops noticeably. Night and day volume are two different worlds, so don’t compare them one to one.
• Indicators are calculated differently. Moving averages or oscillators on a 30-minute chart will include the night candles too. So your average will sit somewhere different from that of a trader looking at Regular, and most of the market is still looking at Regular.
• Price gaps disappear. On a 24h chart, the morning gap gets “filled in” by night candles. If watching gaps matters for your strategy, analyse them on Regular, because that’s where they form.
• Alerts may wake you at three in the morning. Set an alert on a 24h chart, and on a thin market a single random trade can trigger it.
• Backtests will give different results. The same strategy tested on 24h and on Regular is, in practice, two different strategies.
• You’re looking through a single window. TradingView shows the night from Blue Ocean. On competing venues (Bruce ATS, MOON ATS), the price at that same moment may have been slightly different, because they are, in effect, separate trading floors.
• You can see the night, but you can’t necessarily trade it. Whether you can place an order at 3:00 depends on your broker, not on TradingView. Check what it offers.…and most importantly:
• Your stop loss goes to bed when you do. At big brokers such as Robinhood Markets or Schwab, only limit orders work overnight. So a stop-loss order waits for the day session (rules can differ between brokers, so check your platform). If the price breaks through your protective level at night, you’ll see it on the 24h chart, but the order will only trigger in the morning, often at a worse price. A take profit (TP) placed as a limit order, on the other hand, can execute at night too. The condition: your broker offers overnight trading, and when placing the order you choose for it to be valid in the overnight session as well. However, once brokers start accepting stop orders at night too, a new risk will appear: on a thin market, the biggest players (so-called Smart Money) will find it even easier to reach for clusters of stop losses and harvest the liquidity they hold.

Put simply: until the markets reach adequate liquidity and support every type of order, treat 24 hours as a window you peek through in the morning, not as the foundation of your entire analysis.

6 December 2026: The Big Stores Open for the Night!

And now the most important news for anyone who trades US stocks. The all-night pharmacy is about to stop being the only light on the night-time street.

On Sunday, 6 December 2026, real exchanges are set to switch to night mode. NASDAQ received approval from the US Securities and Exchange Commission (SEC) in April 2026. NYSE Arca, the young 24X National Exchange and Cboe EDGX plan to join it. All on a 23/5 model: 23 hours a day, five days a week.

What will the new daily schedule look like?

• The trading week will run from Sunday 21:00 to Friday 20:00 ET.
• The exchanges’ overnight session will run from 21:00 to 4:00 ET, i.e. from 3:00 to 10:00 in Central Europe.
• A one-hour break from 20:00 to 21:00 ET. That’s time for settlement, system maintenance and the date change. The big stores close for cleaning. Fun fact: this happens to be the busiest hour of the night. And the all-night pharmacy can keep serving customers in the meantime.

The calendar changes too. A trade executed on Monday at 22:00 ET will carry Tuesday’s date. It’s a solution familiar from the futures market: “Monday” really starts on Sunday evening.

The big stores are also bringing in their own night-time rules. Overnight, temporary, fixed price bands of 20% from a reference price will apply (the night-time counterpart of the LULD circuit breaker, Limit Up-Limit Down). For splits, spin-offs or ticker changes, trading will be halted until 8:00 ET. And companies won’t be able to opt out of overnight trading.

The most important part, though, happens behind the scenes. The central quote system (Securities Information Processor, SIP) collects prices from all exchanges into one shared feed. Until now, it simply didn’t run at night. Every venue was a separate island, with no shared “best price in the country”. From December, the SIP is set to run 23/5. The NSCC clearing house has been operating 24/5 since June 2026.

For traders, this is good news in practice. More participants at night should mean more liquidity: tighter spreads and fewer odd wicks drawn by a single random order. And the biggest players, the Smart Money, will find it harder to quietly reach for clusters of smaller traders’ orders once it gets crowded on the other side of the window.

And Europe? The London Stock Exchange has announced its own overnight platform, LSE 24. It is due to launch in the first half of 2027, initially only for ETF-type products. On the other European exchanges, the Warsaw Stock Exchange included, the night-time quiet hours still apply.

What does this mean for your chart? It’s not yet known whether TradingView will start showing overnight quotes from the big exchanges under the 24 hours option too, or stick to Blue Ocean only. It’s worth keeping an eye on this after 6 December. Meanwhile, Blue Ocean’s CEO is already talking about the next step: trading 365 days a year, weekends included.

Finally: A Morning That Can Surprise You

Before we part, let me leave you with a curiosity that casts the whole topic in a completely new light.

Economists have long been tracking a phenomenon called the overnight drift. In their paper “Night Moves”, Victor Haghani, Vladimir Ragulin and Richard Dewey showed that in 22 of the 24 countries studied since 1990, a much larger part of the main indices’ gains came as a gap at the opening of the session. In other words, the city prepared for change mostly while the main street was dark, and made it as the day broke. One of the exceptions was China, where the T+1 rule applies: a share bought today can be sold no earlier than the next day. Researchers still argue about the causes. Some point to the emotions of retail investors placing orders for the open, others to the behaviour of big players.

Before you jump to hasty conclusions, though: this is not a ready-made recipe. Practical attempts to exploit the phenomenon haven’t produced good results, and a gap can open in either direction. So the study mainly tells us when the market moves prices, not how to make money from it.

For a trader, something else matters more. For years there were hardly any night-time windows, so this move only showed up in the morning, as a single frame: the opening gap, sometimes a huge one. And such a gap is rarely a gift that makes you wake up a millionaire. More often it’s a morning surprise: it jumps over your stop loss and fills it at a much worse price.

That’s why a trader’s craft matters so much: preparing, both in knowledge and in practice, for whatever may be waiting for you in the morning, at the opening bell. Knowledge brings calm and a sense of control. It helps you avoid the biggest losses and recognise when it’s worth opening a position, and when the time has come to close it. Knowing the city and its rituals gives you an edge, and not only in the morning.

From December 2026, the big stores, i.e. the major exchanges, will also start working the night shift. Many overnight jumps may then spread out into ordinary, continuous trading, and the street will get busier. There will be more liquidity, the very thing the biggest market players are always looking for. For us, that means a better chance that pending orders, i.e. stop loss (SL) and take profit (TP), will execute where we planned them (provided your broker handles them overnight), without unhealthy morning surprises. For an active trader, it’s new opportunities rather than a loss.

You don’t have to switch all your charts to 24 hours right away. Keep working with Regular and Extended, as before. But when you see an opening gap in the morning that you don’t understand, switch on the night camera. Peek through the window of the all-night pharmacy. That’s often exactly where the whole story begins.

Because the city that hardly ever sleeps isn’t empty at night. We just didn’t have the lights on until now.

Jacek Pobłocki

Financial Analyst of Markets and Securities

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