How many trading days in a year and why it matters?
If you are a trader or an investor, one of the first things you need to understand is ”how many trading days in a year” and why it matters. In the United States and Australia, there are usually between 250 and 252 trading days each year. Let’s dive deep into why this number is important, how it is calculated, and how you can use this information to plan your trading strategies.
What Is a Trading Day?
A trading day is simply a day when the stock markets are open for buying and selling.
In the United States and Australia, stock markets are open Monday through Friday. When you subtract weekends and official market holidays from 365 calendar days, you get an average of 252 trading days in a year.
Major U.S. and Australia stock market exchanges include the New York Stock Exchange (NYSE), Nasdaq, ASX and OTC Markets. These exchanges operate during regular trading hours, from 9:30 AM to 4:00 PM.
Regular and Extended Trading Hours
In addition to the standard session, there are also extended trading hours.
Pre‑market trading happens from 4:00 AM to 9:30 AM, while after‑hours trading runs from 4:00 PM to 8:00 PM.
During pre‑market and after‑hours sessions, many brokers require you to change your time‑in‑force (TIF) setting to include extended hours. Some brokers, like IG Markets, allow all orders to be a “Day+” order, which covers both regular and extended hours. Others may require you to change your order type depending on the session. If an order is rejected, double‑check the error message and the TIF setting.
How Many Trading Days in a Year and Why?
Now, let’s calculate the actual number. Start with 365 days in a year. Subtract weekends (52 weeks × 2 days = 104 days). Subtract market holidays (about 9 days). What you are left with is around 252 trading days in a year.
This number provides consistency for market participants. It balances liquidity while giving systems and traders time to rest. Unlike crypto markets, which operate 24/7, traditional stock markets follow this calendar.
Best Days of the Week for Day Trading
Historically, Wednesdays and Thursdays have been the most profitable days for many day traders. After analyzing over 20,000 trades over eight years, many traders report they earn the most on these days. Mondays are often slower, Tuesdays are used to build momentum, and by Friday, many traders reduce their size. Think of it like running a race—start steady on Monday, hit your stride midweek, then finish strong by Thursday without taking big risks.
Best Time of the Year to Trade
When looking at the yearly cycle, many traders find that the most profitable period is from October through March. other months can feel slower, but overall, the market is cyclical. You will see hot cycles and cold cycles that do not always match the calendar seasons.
The 80/20 Rule in Trading
A powerful concept to understand is the 80/20 rule in trading. Around 80% of your profit often comes from just 20% of your trading days. That makes it crucial to stay consistent and present. Out of the 252 trading days in a year, only about fifty of them might drive most of your success. For this reason, many traders avoid taking time off midweek and instead plan long weekends by skipping Mondays or Fridays.
Why Missing the Best Days Hurts
Missing just a handful of the best trading days can have a huge impact on your long‑term returns.
Data from 1990 to 2020 shows that staying fully invested in the S&P 500 would have given you an annualized return of about 10.7%. Missing the ten best days drops that to 7.4%. Missing the twenty best days reduces returns to nearly flat at 4.4%. Interestingly, these best days often come right after big downturns, proving why staying active is so important.
How Many Trading Days in a Year Around the World?
Different global markets have different numbers of trading days because they follow their own holiday schedules.
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U.S. markets: around 252 trading days.
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Australia markets: around 252 trading days.
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London Stock Exchange: around 252 trading days.
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Hong Kong Exchange: around 245 trading days.
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Forex: 24 hours a day, five days a week.
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Crypto: 24 hours a day, seven days a week.
Even though forex and crypto are open more often, the most significant price movements often align with traditional market hours or major economic events.
Major Holidays When Markets Are Closed
In 2025, U.S. markets will close for holidays like New Year’s Day, Martin Luther King Jr. Day, Presidents’ Day, Good Friday, Memorial Day, Juneteenth, Independence Day, Labour Day, Thanksgiving, and Christmas. Even though Veterans Day and Columbus Day are federal holidays, the markets remain open on those days. The number of trading days in a year is determined after subtracting these holidays and weekends.
Trading Days vs Calendar Days
It is important to remember that trading days and calendar days are not the same.
Trading days are the days markets are open for buying and selling—about 252 in a year.
Calendar days include every day of the year—365 or 366 in a leap year. Market activity only happens on trading days, which is why they matter more for planning trades and analyzing performance.
Calculating Trading Days Yourself
You can calculate how many trading days are in a specific year by using daily historical data of an index or stock that trades every day the market is open. Count the days in that dataset for the year you are analyzing. For 2025, the calculation goes like this: 365 total days, minus 104 weekend days, minus roughly 9 holidays, leaving you with about 252 trading days in a year.
How to Maximize Your 252 Trading Days
The best traders make the most of each trading day by planning.
Mark holidays, economic announcements, and market closures on your calendar. Prepare for key earnings seasons or central bank meetings. Trading is not about making big moves every day; it is about showing up consistently, sticking to your plan, and taking advantage of high‑quality setups.
Best Days and Times to Trade
Many traders agree that Tuesday, Wednesday, and Thursday mornings often present the best opportunities. Monday mornings can be choppy as markets adjust from weekend news. By midweek, volume and volatility are often stronger, giving you better setups to work with. Toward the end of the week, traders often lock in profits and reduce risk.
Why Trading Days Matter for Your Strategy
The number of trading days in a year directly affects your risk management, strategy development, and long‑term consistency. With 252 trading days in a year, you have plenty of opportunities to execute trades, learn from results, and refine your approach. Spread your trades out, avoid overtrading, and focus on quality over quantity. Seasonality and cycles also matter, so align your strategy with periods of higher activity when possible.
Conclusion
So, how many trading days in a year are there? In the United States and Australia, the answer is about 252 trading days after subtracting weekends and holidays. Each trading day runs from 9:30 AM to 4:00 PM, with additional opportunities during pre‑market and after‑hours sessions.
Knowing the trading calendar helps you plan more effectively, manage risk more effectively, and stay consistent. Missing even a few of the best trading days can dramatically reduce your returns, so make every day count. Whether you trade stocks, forex, or crypto, understanding how many trading days are in a year gives you an edge in planning your schedule, refining your strategy, and achieving your goals.
Remember: It is not about timing the market; it is about time in the market. Use those 252 trading days wisely, and you will be well on your way to building consistent success in your trading journey.
Short Bio of Author:
Partha Banerjee is the Founder & Director of N P Financials, Australia’s leading proprietary trading firm. With a passion for empowering traders to succeed, Partha combines deep market insight with practical education to help individuals transform from struggling traders into confident professionals.
Experience & Expertise:
Partha has over a decade (16 years) of hands-on experience in financial markets, specializing in forex, indices, commodities, cryptocurrencies, and advanced trading psychology. He has trained thousands of traders through his proprietary courses and guided them to consistently profitable trading, blending disciplined risk management with high-probability strategies. Partha’s expertise also includes developing trader psychology frameworks that help eliminate emotional barriers to success and build long-term confidence in market execution.
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