1. Introduction to U.S. Overnight Trading

Overnight trading hours run from 08:00 - 15:50 SGT during daylight saving time and 09:00 - 16:50 SGT during standard time.

During a daylight saving day, the first session of overnight trading begins on Monday morning at 08:00 SGT and concludes early Monday afternoon at 15:50 SGT, while the last session takes place on Friday morning at 08:00 SGT and ends early Friday morning at 15:50 SGT.

It's important to note that the start of overnight trading marks the beginning of the next trading day. Overnight trading, along with pre-market, regular trading hours, and post-market trading, form the 24-hour trading cycle of the U.S. stock market.

For example, the overnight trading hours on Tuesday morning, spanning from 08:00 SGT to early Tuesday afternoon at 15:50 SGT, is considered part of Tuesday's U.S. trading day. The contract details for these trades will only be available in Wednesday's statement, alongside the U.S. pre-market, regular, and post-market trades.

2. What products can be traded in a U.S. overnight trading session?

Overnight trading is applicable to both stocks and ETFs, with support for 55 specific codes at present. For a comprehensive list, please refer to the "Appendix - Overnight Trading Code List" at the end of this document. 

Alternatively, you can check whether a specific code supports overnight trading by looking for the "24H" label on the stock details page. The range of codes available for overnight trading is continuously expanding.

3. Is market data available for a U.S. Overnight trading session?

You can access various types of market data, including overnight trade snapshots, intraday charts, transaction details, transaction statistics, and BBO (Best Bid & Offer).

4. Is overnight trading available during U.S. holidays?

Overnight trading adheres to the exchange holiday calendar and corresponds to regular trading days. There is no overnight trading during holidays. For example, if Friday is a US holiday, overnight trading will not be available on Friday morning and evening (SGT).

5. Do I need an additional account for overnight trading?

No additional account is needed for after-hours trading. You can participate in overnight trading as long as you have an account with Longbridge.

6. What are the transaction fees for overnight trading?

Transaction fees for overnight trading are the same as those applied during regular trading hours.

7. How can I place orders during an overnight session, and what types of orders are supported?

To place an order during the overnight session, simply access the trading hall and opt for the "Overnight Only" session.

Overnight trading only supports limit orders, and their validity is restricted to the current trading day.

8. Is short selling allowed during an overnight session?

Short selling is supported during an overnight session.

9. Can I place an overnight order before the overnight session?

No, overnight orders can only be placed during the designated overnight session.

10. How are my position value and P/L calculated?

You can choose whether to incorporate overnight trading prices into your position and P/L calculations via "More Settings" > "Portfolio" > "Asset Calculation Method" option. When you opt for overnight trading prices, the latest prices during the overnight session will impact your position values and P/L calculations.

11. What should I pay attention to during overnight trading of U.S. stocks?

Overnight trading is considered as over-the-counter transactions, and is subject to counterparty restrictions on order prices. Orders that fall outside a range of +/- 7% from the previous regular trading hour's closing price may face rejection by the upstream broker.

Our counterparty may reject the orders for overnight trading for a stock within 3-day window period if there is any corporate action related to the company.

Overnight trading of a stock may not be possible on the day of a corporate action, as well as on the preceding and following days.

Appendix - Overnight Trading Code List