Moomoo US Help Center-At-auction market order
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At-auction market order

The Pre-market opening session helps establish an orderly market open when the trading system is loaded with large numbers of orders and provides the market with a fair mechanism to determine the calculated opening prices (COP) at which the largest possible number of transactions may be traded, based on a predetermined formula. This helps to maintain order at the market open and minimize price fluctuation. 

Hong Kong stock auction market transactions are divided into pre-opening auction session and closing auction session. Investors only need to enter the auction market orders during the pre-opening auction period or the closing auction period to participate in the auction market transactions, including:


1. Pre Opening At-auction Market Order

1.1 Available Time

Investors can place orders from 16:10 on the trading day to 09:22 on the next trading day. Auction market orders placed before 09:00 on the trading day will be saved by Moomoo Financial Inc.'s trading system and will be automatically submitted after 09:00 To the exchange.

1.2 Matchmaking Time

9:20-9:22 finish random matching

1.3 Description and Precautions

(1) Cannot be changed or canceled after 9:15

(2) At auction market orders are matched in order based on the order placing time

(3) Only securities allowed to be traded on the Hong Kong Stock Exchange can be bought at auction. Due to the risk control relationship, auction buying will freeze a part of the buying power, and the freezing ratio of different stocks is different. The frozen funds will be automatically refunded after the order is completed or canceled.

(4) Any unsold auction market orders will be automatically canceled before the official opening of the market


2. The Closing Market Order

2.1 Available Time

16:01-16:10 (of which 16:08-16:10 is a random closing period, if the market has been closed, you cannot place an order)

2.2 Matching Time

16:08-16:10

2.3 Instructions and Precautions

(1) All auction market orders cannot be changed or canceled after 16:06

(2) At auction market orders are matched in order

(3) Out of the risk control relationship, bid buying will freeze a part of the purchasing power, and the freezing ratio of different stocks is different. The frozen funds will be automatically refunded after the order is completed or canceled.

(4) Any unsold auction market order will be automatically canceled after the random closing

For more details about the closing auction, please refer to the information of the HKEX.

Disclaimer

The at auction market order is a convenient transaction method provided by Moomoo Financial Inc. for customers. Moomoo Financial Inc. provides stable services as much as possible, but it cannot guarantee its absolute reliability. If there are other physical factors such as network interruption and server abnormality that result in the at auction market order not being executed, Moomoo Financial Inc. will not be liable for any loss or damage caused thereby.