Recently, I've noticed many Taiwanese investors discussing after-hours trading in U.S. stocks, but many are actually unclear about the timing of the U.S. stock after-hours session, and some even confuse it with the Taiwan Futures Exchange's night trading. In fact, these two are completely different; today, I will clarify the ins and outs of the U.S. stock electronic trading session.

Let's start with the most practical issue. When the Taiwan stock market closes and major news suddenly breaks in U.S. stocks, you're left waiting until the next open. Many people have experienced this helpless feeling. But in reality, U.S. after-hours trading exists to solve this problem. Regular U.S. stock trading hours are from 9:30 a.m. to 4:00 p.m. Eastern Time, but outside of these hours, electronic trading allows you to continue trading. Converted to Taiwan time, during daylight saving time, after-hours is from 4 a.m. to 8 a.m., and during standard time, it's from 5 a.m. to 9 a.m.. It sounds late, but for Taiwanese investors, it's actually early morning, making it more friendly than regular trading hours.

U.S. stock electronic trading mainly divides into pre-market and after-hours sessions. Pre-market is from 4 a.m. to 9:30 a.m., and after-hours is from 4 p.m. to 8 p.m. Eastern Time. If you want to position yourself based on overnight news, the after-hours period is the most critical. Futures markets are even more flexible; CME products operate nearly 23 hours a day, including crude oil, gold, and various stock index futures, allowing global investors to participate at any time.

Regarding the use of U.S. stock after-hours time, many mistakenly think they can trade freely like during regular hours. In reality, liquidity after hours is much lower than during the day, and bid-ask spreads are significantly wider—this is a cost you must accept. Moreover, participants are mainly institutional investors and well-informed traders; retail investors need to be more strategic to profit during this period.

When viewing quotes, I usually use TradingView, which has a Chinese interface friendly to Taiwanese users and can directly display after-hours data. Nasdaq's official website is also good, providing the most authoritative data. If you don't want to switch between many sites, you can also check prices directly on trading platforms like Mitrade, where quotes are synchronized in real-time, and after-hours prices are accurate.

There are several pitfalls to avoid when trading during after-hours. First, only trade stocks you have long-term tracking on—avoid unfamiliar stocks. Second, always base your trades on news; don't operate randomly without reason. Major events like Federal Reserve policies or corporate earnings releases are your opportunities. Third, use limit orders instead of market orders, and set stop-loss and take-profit levels in advance. Fourth, keep your position size small; don’t gamble with heavy positions, as it’s very risky if you can't sell your holdings after hours.

Be especially cautious with after-hours trading on Mondays. Weekend news can accumulate, leading to high volatility, which can be intimidating for beginners. Also, small-cap stocks with low trading volume after hours may have no liquidity at all; orders may not execute. Prioritize large-cap stocks or mainstream futures.

The advantage of U.S. electronic trading is that it provides an additional time window. If major news breaks after Taiwan's market close, you can act before the next open, avoiding significant price gaps. This can create short-term opportunities because of increased volatility. You can also hedge Taiwan stock holdings with U.S. futures, managing risk across both markets.

However, risks should not be underestimated. Since participation after hours is low, you might face situations where you can't sell when you want or can't buy when you need. System risks also exist; platform lag can prevent your orders from executing promptly. The most concerning risk is price gaps—after-hours prices may not reflect the next day’s opening price. If unexpected news occurs overnight, the opening price could gap significantly, and your stop-loss might be ineffective.

If you want to try with a lower barrier, look for platforms that support TWD deposits. Some U.S. brokers require a minimum of $25k USD to trade after-hours and need separate permissions, making it quite high. But some platforms support CFD trading on U.S. stocks with TWD deposits, starting from as little as $50 USD, which is much more friendly for small investors.

Finally, a reminder: although after-hours trading offers extra opportunities, it’s not an invitation to trade frequently. You must fully understand its advantages and risks, especially price volatility and liquidity issues, and decide based on your risk tolerance. Remember, investing involves risks, and trading should be cautious—this is especially true for after-hours trading.