Support Center
The AAS Support Center provides investors with answers to common questions and step-by-step guidance throughout their trading journey.

Trading Guide
View moreEssential Knowledge for New Investors
Order matching principles on UPCOM
Trading unit on UPCOM exchange
Quotation unit on UPCOM exchange
Reference price on UPCOM exchange
Types of orders on UPCOM exchange
Types of orders on HSX exchange
Settlement time on HSX exchange
Information about how to trade on HNX
Types of orders applicable on HNX
Other FAQs
Stock Trading
How to Deposit Funds into Your AAS Securities Trading Account
I have successfully completed the account registration via e-KYC. How soon will I receive a text message or email from AAS?
Foreign investor transactions on HSX
What is odd-lot stock trading?
Which type of securities is subject to odd-lot trading?
What should investors do if they want to trade odd-lot securities?
How would an investor place an order if they wanted to sell 109 shares of XYZ?
What are the regulations on tick size, quotation unit, and price fluctuation limit for odd-lot securities transactions?
Odd-lot stock trading methods and odd-lot stock trading hours?
What types of orders can investors use to trade odd-lot securities?
What is the prescribed payment time for odd-lot securities transactions?
When trading odd-lot securities, do odd-lot securities trading orders cross-match with even-lot securities trading orders?
Does the matching price of odd-lot securities transactions affect HoSE’s current index?
Are newly listed securities allowed to be traded in odd lots on the first trading day?
Other FAQs
Margin Trading
Trading Services
What steps should I take if I forget my trading password/online trading password?
Why am I required to change my password upon my initial login?
I have successfully completed the account registration via e-KYC. How soon will I receive a text message or email from AAS?
I would like to open an account, but I am unable to visit an AAS transaction office. Are there alternative ways for me to open an account?
Other FAQs
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