Pre-Market and Post Market trading are supported on Moomoo!

How to place these order? When can we place these orders? What kind of rules should we follow? What risks  will we faced when placing these kind of orders?

This passage will answer these questions related to US stocks Pre/Post Market time trading.

1. How to place Pre/Post Market time order? When is the Pre/Post Market time?
Let's take 'AAPL' as an example. When you placing an order, you can choose to click on the 'Allow' button of the 'Fill outside RTH' section if you want to trade during Pre/Post Market time.

（1）Pre-Market(ET): 4:00 a.m.~9:30 a.m.
（2）Post Market(ET): 16:00 p.m.~20:00 p.m.

Quotes and order entry available from 4:00 a.m. to 8:00 p.m.

The trading hours of US stocks include pre-market trading hours, regular market trading hours, and post market trading hours. Investors can choose whether to allow the the order to be placed during the pre-market time and the post market period.

Orders that have not been filled during the pre-market trading hours will be automatically transferred to the regular trading period, and orders that have not been completed during the regular trading hours will be automatically transferred to the post-market period.

2. Trading rules

The rankings are sorted by the latest market data. When the market data update schedule is not displayed, the market data of the latest moment will be displayed for sorting. The specific rules are as follows:

PS: T indicates a trading day, then T-1 is the previous trading day. For non-trading days, the latest data for the most recent trading day will prevail.

3. Risks of trading during Pre-Market and Post Market

（1）Risk of lower liquidity
Liquidity refers to the ability of market participants to buy and sell securities. Generally, the more orders that are available in a market, the greater the liquidity, and as a result, investors are more likely to pay or receice a compatitive price for securities purchased or sold.
Lower liquidity means your order may only be partially executed, or not at all.

（2）Risk of higher volatility
Volatility means the changes in price that securities undergo when trading. Generally, the higher the volitility of a security, the greater its price swings.

（3）Risk of changing prices
The prices of securities traded in extended-hours trading maynot reflect the prices during the regular trading market. Therefore, you may receive an inferior price when engaging in extended-hours trading system.

（4）Risk of News announcement
Normally, news announcement that may affect the price of their securities are issued after regular trading hours. Therefore, in extended trading hours, these announcements may occur during the trading, combined with the risk of lower liquility and higher volatility, price of the security may be exagerated and unsustainable.

（5）Risk of wider spreads
Spreads refers to the difference in price and between what you can buy a security and what you can sell it for.

Hopes the information provided above can answer your questions.