# Hanoi Stock Exchange Enumerations

The Hanoi Stock Exchange (HNX) is Vietnam’s second securities trading center after HOSE. It handles trading of stocks, bonds and derivatives. Recently, it had 345 listed companies.[4][5]

The following fields have Enumerations:

* BOOK_TYPE - Type of order book or trading mechanism through which a trade was executed.
* TRADE_PERIOD - Market period during which a trade was executed.
* TRADE_TYPE - Type of trade

#### BOOK_TYPE - Enumeration

|   Enumeration ID | Enumeration Description   |
|------------------|---------------------------|
|                0 | Lit order book            |
|                1 | Off-book                  |

#### TRADE_PERIOD - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| -                | Regular trading           |
| A                | Auction                   |
| C                | Closing auction           |
| T                | Trading at closing price  |

#### TRADE_TYPE - Enumeration

|   Enumeration ID | Enumeration Description   |
|------------------|---------------------------|
|                0 | Regular trade             |
|                1 | Put-through trade         |
|                3 | Auction trade             |