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Hong Kong & US Stock Trading Guide 2025: Trading Hours and Fee Calculation

Updated: 2025/10/13  |  CashbackIsland

Hong Kong Stock Trading Hours and US Stock Fees

Preface: Take the First Step in Overseas Investing by Mastering the Rules

Just entering the world of Hong Kong and U.S. stock investing, have you ever been confused by the seemingly complex Hong Kong stock trading hours, or felt overwhelmed by the various U.S. stock fee calculations? “When can I place an order?”, “Can I trade during the lunch break?”, “Besides commissions, what other hidden costs are there when trading U.S. stocks?” These are common questions for many novice investors. Don’t worry, this is a necessary part of becoming a mature investor.

Making a profit is not just about buying low and selling high; it’s more importantly about accurately understanding the trading rules and effectively controlling costs. Placing an order at the wrong time can lead to a failed trade, while ignoring various fees can unknowingly erode your investment returns. This article is your “Overseas Investment Practical Handbook.” We will use the most straightforward language to help you understand Hong Kong’s trading sessions and teach you step-by-step how to accurately calculate the various fees for U.S. stocks. Are you ready? Let’s take the first steady step in investing with confidence!

 

Complete Guide to Hong Kong Stock Trading Hours: Master the Golden Trading Window

As an international financial center, Hong Kong’s stock market trading hours are designed to be regular and comprehensive, mainly divided into five major stages: Pre-opening, Morning Session, Lunch Break, Afternoon Session, and Post-closing. Understanding the characteristics of each period will help you better plan your trading strategy.

 

Hong Kong Time (GMT+8)

Below is the schedule for a full trading day for Hong Kong stocks, with all times in Hong Kong local time (GMT+8):

Pre-opening Session (Auction): 09:00 – 09:30

  • 09:00 – 09:15: Order Input Period. You can place, amend, or cancel orders.
  • 09:15 – 09:20: Pre-opening Order Matching Period. No orders or modifications are allowed during this time as the system performs initial matching of buy and sell orders.
  • 09:20 – 09:30: Pause Period, waiting for the market to open.

The purpose of this stage is to determine the “opening price” of individual stocks through an auction mechanism before the official market opening.

Morning Session (Continuous Trading): 09:30 – 12:00

This is the main morning trading session for Hong Kong stocks. Investors can freely buy and sell, and prices change in real-time with market supply and demand. It is one of the most active trading periods.

Lunch Break: 12:00 – 13:00

A unique feature of the Hong Kong stock market, the market pauses for a lunch break, giving traders and investors time to rest and adjust their strategies.

Afternoon Session (Continuous Trading): 13:00 – 16:00

The afternoon trading session where the market reopens. Trading activity is usually slightly lower than in the morning but may pick up again as the closing time approaches.

Closing Auction Session: 16:00 – Approximately 16:10

  • 16:00 – 16:01: Reference Price Fixing Period.
  • 16:01 – 16:06: Order Input Period. You can place orders during this time, but the price is limited to ±5% of the reference price.
  • 16:06 – 16:08: No-Cancellation Period.
  • 16:08 – 16:10: Random Closing Period. The system will close at a random point within these two minutes.

This mechanism is designed to allow the market to close at a fairer and more orderly price, avoiding sharp price fluctuations in the final moments before closing.

 

What is a Half-Day Market? 2025 Hong Kong Stock Market Half-Day Dates

On the eve of certain holidays, such as Christmas Eve, New Year’s Eve, and Lunar New Year’s Eve, the Hong Kong stock market only trades for half a day, meaning there is no afternoon session. The morning session ends at 12:00, followed directly by the closing auction session. Investors need to pay special attention to these dates to avoid missing trading opportunities.

💡 Friendly Reminder: The specific dates for half-day trading are announced annually by the HKEX. It is recommended that investors mark these dates on their calendars at the beginning of the year.

 

Comparison of Mainland China/Malaysia/Singapore Time with Hong Kong Stock Market Time

For investors in Mainland China, Malaysia, or Singapore, there’s good news! Because these three regions are in the same GMT+8 time zone as Hong Kong, there is no time difference. The opening time of the Hong Kong stock market is the same as your local time, requiring no conversion, which is very convenient.

Region Time Zone Relationship with Hong Kong Time
Hong Kong GMT+8 Base Time
Mainland China GMT+8 Synchronized, No Time Difference
Malaysia GMT+8 Synchronized, No Time Difference
Singapore GMT+8 Synchronized, No Time Difference

 

How to Calculate U.S. Stock Fees? Don’t Let Hidden Costs Eat Your Profits

Compared to Hong Kong stocks, the fee structure for U.S. stocks is slightly more complex, but once you understand its components, the calculation is quite clear. The costs of investing in U.S. stocks mainly consist of four items, and understanding these is fundamental to a good U.S. stock fee calculation.

 

Main Components of U.S. Stock Trading Fees

  1. Commission: This is the service fee paid to the brokerage. Due to intense competition in recent years, many overseas online brokers offer zero commission, but if you place orders through a domestic broker’s “sub-brokerage” service, this fee is often still a major cost.
  2. Platform Fee: Even some zero-commission brokers may charge a platform maintenance fee or account management fee, usually on a monthly or quarterly basis, or depending on your trading frequency.
  3. SEC Fee (Securities and Exchange Commission Fee): This is a fee charged by the U.S. securities regulator, only applicable when selling stocks. The fee is very low, calculated as: Total Sale Amount × 0.0000278 (this rate is subject to periodic adjustments, please refer to the official SEC information for the latest rate).
  4. TAF (Trading Activity Fee): This fee is charged by the Financial Industry Regulatory Authority (FINRA), also only applicable when selling stocks. The fee is: Number of Shares Sold × 0.000175, with a cap of $8.75 per trade.

 

U.S. Stock Fee Calculation Example

Let’s walk through a practical scenario to give you a better feel for it:

Scenario: Suppose you sell 100 shares of Apple Inc. (AAPL) stock at a price of $50 per share through a zero-commission overseas broker.

Total Sale Amount: 100 shares × $50 = $5,000

Fee Calculation:

  • Brokerage Commission: $0 (because it’s a zero-commission broker)
  • Platform Fee: $0 (assuming the broker has no platform fee)
  • SEC Fee: $5,000 × 0.0000278 = $0.139
  • TAF Fee: 100 shares × 0.000175 = $0.0175

Total Fees: $0.139 + $0.0175 = $0.1565

As you can see from the example, for investors using overseas brokers, the primary trading costs are extremely low. However, the situation is quite different if you choose a sub-brokerage service.

 

Sub-Brokerage vs. Overseas Broker: Fee Comparison and Choice

For investors in Mainland China or Malaysia, there are two main channels for investing in U.S. stocks: “sub-brokerage” and “opening an overseas brokerage account directly.” The fee structures and convenience of these two options are vastly different, and your choice will directly impact your investment costs.

Comparison Item Sub-brokerage Overseas Broker
Fees Higher, typically 0.5% – 1% of the transaction amount, with a minimum charge (e.g., $15-$50) Very low or zero commission, only minimal SEC and TAF fees apply
Pros Funds remain domestic, convenient communication in local language, compliant with local regulations, relatively simple estate handling Extremely low trading costs, diverse investment tools (e.g., options), flexible fund wire transfers
Cons High trading costs erode profits, investment options may be limited Requires handling overseas wire transfers yourself, customer service communication may be in a foreign language, funds are subject to overseas regulations
Suitable For Investors with large single investment amounts, infrequent traders, and those who feel uneasy with overseas operations Active traders, small-scale investors, and those seeking low costs and diversified products

In summary, if you are a long-term holder who doesn’t trade frequently and prioritizes fund security and convenience, a sub-brokerage might be a considerable option. However, if you are an active trader or a small-scale investor looking to minimize costs, taking the time to research and open an overseas brokerage account is definitely the more cost-effective choice.

 

Trading Hours You Must Know Before Investing in U.S. Stocks

Once you understand the fees, the next thing is time. U.S. stock trading hours are affected by “Daylight Saving Time” and “Standard Time,” which is a key point for Asian investors to remember.

 

Standard U.S. Stock Trading Hours (Eastern Time)

The regular trading hours for U.S. stocks are from 09:30 to 16:00 Eastern Time (ET). However, due to Daylight Saving Time, the conversion to Asian time will vary.

  • Daylight Saving Time: Approximately from the second Sunday in March to the first Sunday in November.
  • Standard Time: Approximately from the first Sunday in November to the second Sunday in March of the following year.

Here are the corresponding opening and closing times for our GMT+8 time zone:

Period Eastern Time (ET) Corresponding Asian Time (GMT+8)
Daylight Saving Time 09:30 – 16:00 21:30 – 04:00 (Next Day)
Standard Time 09:30 – 16:00 22:30 – 05:00 (Next Day)

 

What Are Pre-Market and After-Hours Trading? How Do They Affect General Investors?

In addition to regular trading hours, U.S. stocks also have “Pre-market” and “After-hours” trading sessions. These periods are typically for institutional investors or those who react quickly to market news (like earnings reports) to trade.

  • Pre-market Trading: Usually from 04:00 – 09:30 ET
  • After-hours Trading: Usually from 16:00 – 20:00 ET

For general investors, it is important to note the following:

  1. Lower Liquidity: Fewer participants mean the bid-ask spread may be wider.
  2. Higher Volatility: Any significant news can cause drastic price fluctuations during these sessions.
  3. Not Suitable for Beginners: Due to the higher risks, it is generally not recommended for novice investors to trade during pre-market or after-hours sessions.

It is best to view these sessions as a “barometer” of market sentiment and wait until the regular trading session to enter the market, which is generally a more prudent strategy. To learn more basic knowledge, you can read our Introduction to U.S. Stock Investing.

 

Conclusion

In the wave of globalized investment, entering the Hong Kong and U.S. stock markets is no longer a distant dream. This article has detailed every aspect of Hong Kong stock trading hours and provided a clear guide to calculating U.S. stock fees. Mastering these fundamental rules is like equipping your investment journey with the best map and compass.

Remember, successful investing begins with respecting the rules and meticulously calculating costs. Knowing the best trading times allows you to catch the market’s pulse; understanding the source of every fee ensures your profits are not silently eroded. You now have the foundational knowledge to plan your trading strategy. The next step is to bravely start your Hong Kong and U.S. stock investment journey based on the information in this article. Wishing you smooth trading and abundant profits!

 

CashbackIsland continuously updates trading educational resources. Traders can visit the “CashbackIsland Tutorial Guides” section to master more forex knowledge and investment skills.

 

FAQ – Frequently Asked Questions

Do I need to exchange foreign currency to invest in Hong Kong and U.S. stocks?

Yes, you do. Investing in Hong Kong stocks requires Hong Kong Dollars (HKD), and investing in U.S. stocks requires U.S. Dollars (USD). You can exchange currency through your domestic bank’s foreign currency account and then wire the funds to your securities account. It is advisable to exchange in batches when the exchange rate is favorable to reduce currency risk.

Are there still “zero-commission” U.S. stockbrokers?

Yes. Many well-known overseas online brokers in the market, such as Firstrade, TD Ameritrade, and Charles Schwab, offer zero-commission trading for stocks and ETFs. However, “zero commission” does not mean completely free. When selling, you still need to pay government fees like the SEC and TAF fees mentioned earlier, although the amounts are very small.

Do I need to pay taxes on the money I earn from selling U.S. stocks?

This depends on your tax residency status. For non-U.S. residents (such as investors from Mainland China or Malaysia), the “capital gains” from buying and selling stocks are tax-exempt. However, if you receive “cash dividends,” a 30% dividend tax will be withheld. You can declare your non-U.S. resident status to your broker by filling out a W-8BEN form to apply this tax rule.

If I miss the continuous trading session for Hong Kong stocks, can I still place an order?

Yes, you can. You can place a contingent order with your broker at any time (including weekends or after market hours). These orders will be stored in the broker’s system and sent to the market during the next trading day’s “Pre-opening Session” to participate in the auction or executed after the “Continuous Trading Session” begins. This is known as a “pre-set order” or “conditional order,” and it is a very convenient feature.

 

“Trading in financial derivatives involves high risks and may result in the loss of funds. The content of this article is for informational purposes only and does not constitute any investment advice. Please make decisions carefully based on your personal financial situation. CashbackIsland assumes no responsibility for any trading derivatives.”

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