US Markets - Trading Rules

US Exchanges

You can trade stocks which are listed on NYSE, AMEX and NASDAQ.

Trading Hours

From Mondays to Fridays (except US Public holidays):

Summer Time
(2nd Sunday of March to 1st Sunday of November)
HKT 9:30pm - 4:00am
Winter Time
(1st Sunday of November to 2nd Sunday of March)
HKT 10:30pm - 5:00am

Remark: Does not support Pre-Market and After Hours Market on trading platforms.

Order submission

Order submission is not available on the US trading platform during the following periods:

Summer Time HKT 4:00am - 4:30am on trading days;
HKT 4:00am (Sat) - 4:00am (Mon); & US public holidays
Winter Time HKT 5:00am - 5:30am on trading days;
HKT 5:00am (Sat) - 5:00am (Mon); & US public holidays
Settlement period

The settlement period is the trade date plus two US business days (T+2).

Items Description
Board lot size for US stocks There is no board lot size for US Stocks. Investors can trade at a minimum of 1 share per order.
Quantity limit 50,000 shares per order to prevent fat-finger errors
Short-sell US stocks Not allowed via UTRADE Web
Order Execution within the day high/ low range

In the fast-moving market, the time of input order could have possibly coincided with the time when the day's high/ low was reached and the price was never hit again. Therefore, the market order may not be executed successfully.

The price feed provided from trading system/ information vendors is the prices for all exchanges. In addition, orders placed on UTRADE are only directed to the three major exchanges ie. NYSE, NASDAQ and AMEX. In some rare circumstances, if Day's High/ Low is executed outside these three major exchanges, it may occur that the order price never reaches the Day's High / Low quoted, and hence the Market Order was not successfully executed.

Expired Order

Clients' orders will automatically lapse when they are not executed by the end of the trading day, and will have an 'expired' status. Clients will need to re-enter the order if they want to place it for the next trading day.

Order Amendment

For UTRADE HK APP, Stop Limit Order and Market Order cannot be modified. Users have to cancel and place the order again should there be an amendment.

For UTRADE Web, when the amendment of the order is lower than the number of shares, clients will not lose their position in the queue. If the order is larger than the number of shares, clients will lose their position in the queue and is required to re-queue again.