Trading Rules
What are the trading hours for US stocks
How to place an order for US stocks
How to modify or cancel an order
What are time in force and pre-market & after-hours trading
Whether use the pre and post-market price to calculate the market value and profit or loss of your position
Why should the placement of market orders be restricted
What is penny stock
Can US stocks trade intraday/Can I sell US stocks the same day I bought them
Why was my sell order with an order price lower than the best ask price not filled
US stock market holidays
Why use pre- and post-market prices to calculate market capitalization and profit & loss of stocks during the respective session
Withholding Tax on Publicly Traded Partnerships (PTP) Securities and Trading Arrangements
Fractional shares trading in the US stock market
Information about US Stock Moving to T+1 Settlement
Order Type
US Stock Option
US Index Option
Dividend Reinvestment Plan
Market orders are executed at uncertain real-time prices. When liquidity is insufficient and transactions are extremely inactive, sharp price fluctuations are prone to occur. You may therefore trade at a price much higher than the current bid price, or much lower than the current ask price and make losses.
For example:
You intend to buy the Luckin Coffee call option LKNCY220121C25000, but there is no pending sell order in the market. If there are no restrictions on the placement of market orders, your market order may be executed at any price. If the transaction price of your purchase is much higher than the best bid price at that time, you may face greater losses.
To prevent the execution prices of market orders from greatly deviating from expectations and causing losses, Moomoo Financial Inc. temporarily deems the liquidity of the following scenarios as insufficient and will therefore disable the placement of market orders.
Type | Session | Scenario |
Trading hours (ET 9:30-16:00) | At least one is missing: the best bid, the best ask, or the transaction priceof the day |
Notes:
1. The scenarios in the table above may be adjusted at any time due to changes in market conditions. Please refer to the information of the client's prompts.
2. To learn more about market orders, please go to the Help Center / U.S. Market / Order Type / What is market order.