Recently, I’ve been chatting with quite a few Taiwanese investors and found that many share the same concern: after the Taiwan stock market closes, major news suddenly breaks in the U.S. stock market, but they can only wait until the next day’s open, watching opportunities slip away helplessly. Actually, there’s been a solution to this problem for a long time—after-hours trading, commonly known as electronic trading.

I myself only recently truly understood how U.S. stock futures electronic trading works. In simple terms, electronic trading is a way to break through the usual trading hours. Regular U.S. stock trading runs from 9:30 a.m. to 4:00 p.m. Eastern Time, but outside these hours, there are still opportunities to trade before and after the market. For Taiwanese investors, after-hours trading coincides with early morning Taiwan time, making it much more time-friendly compared to trading in the middle of the night during regular hours.

Futures electronic trading is even more flexible, operating close to 24 hours. From crude oil and gold to various futures, investors worldwide can participate at any time. I used to confuse electronic trading with night trading, but I later realized: U.S. stock electronic trading is an extension of regular stock trading hours, while futures electronic trading is electronic trading of contract-based commodities, and their nature is actually quite different.

Why learn about after-hours trading? The most direct benefit is not missing overnight news. When the Federal Reserve announces policies, companies release earnings, or international events break out, traders can react immediately after hours, positioning early to avoid price gaps at the next open. Additionally, using U.S. stock futures electronic trading to hedge Taiwan stock holdings is a good strategy. For example, if you hold TSMC shares, you can short Nasdaq futures after the U.S. market closes, allowing both the U.S. and Taiwan markets to protect each other.

Regarding specific times, U.S. pre-market is from 4 a.m. to 9:30 a.m. ET, and after-hours is from 4 p.m. to 8 p.m. ET. When converted to Taiwan time, note the differences between daylight saving time and standard time. During daylight saving (mid-March to early November), after-hours corresponds to 4 a.m. to 8 a.m. Taiwan time the next day; in standard time, it’s 5 a.m. to 9 a.m.. U.S. stock index futures operate nearly 23 hours a day. Manual trading hours are from 9:30 a.m. to 4:15 p.m., while electronic trading starts at 4:30 p.m. and runs until 9:15 a.m. the next day. Every Monday, the electronic session opens 1.5 hours later, which is important to note.

For checking quotes, I often use TradingView, which has a full Chinese interface. It allows viewing after-hours quotes for multiple stocks simultaneously and drawing technical analysis. The Nasdaq official website also provides direct, authoritative data. If you want to trade directly on your platform, it’s even more convenient—you can view quotes and place orders without switching between multiple websites.

When trading in practice, there are a few core points. First, only trade assets you’re familiar with, such as Apple, Nasdaq 100, or gold—avoid randomly touching unfamiliar stocks. Second, always wait for major news before acting; if there’s no news, stay on the sidelines. This is the core logic of after-hours trading. Third, liquidity is poor after hours, so always use limit orders, set stop-loss and take-profit levels in advance, and never hold large positions recklessly. It’s recommended to keep positions within 5-10% of your total capital. After-hours trading on Mondays tends to be especially volatile, so beginners should avoid it.

The advantages of after-hours trading are indeed numerous. The timing is more flexible, no need to stay up all night watching the screen, and overnight news can be reacted to promptly, creating more short-term trading opportunities. But risks must also be taken seriously. Low liquidity can lead to large bid-ask spreads, sometimes making it hard to sell or buy at desired prices. Large institutional investors have a clear advantage in after-hours trading, while retail traders are more passive. There’s also systemic risk—platform lag or delays can prevent orders from being executed in time. The most concerning risk is price gaps: after-hours prices do not necessarily reflect the next day’s opening price. If unexpected news breaks overnight, the market could gap open the next day, rendering stop-loss and take-profit orders ineffective.

Therefore, U.S. stock futures electronic trading indeed offers us more opportunities, but opportunities and risks often come hand in hand. The key is to fully understand these risks and decide whether to participate based on your risk tolerance. After-hours trading isn’t for everyone, nor should it be used as an excuse for frequent trading. Rational investing and risk control are the long-term winning strategies.