# Blue Ocean ATS Enumerations

Blue Ocean ATS (BOATS) is a US-based Alternative Trading System (ATS) run by Blue Ocean Technologies, enabling trading of U.S. stocks (NMS) during non-traditional hours, specifically 8 PM to 4 AM ET, Sunday to Thursday, bridging the overnight gap

The following fields have Enumerations:

* AGGRESSOR_SIDE - Indicates whether a trade resulted from an incoming buy or sell order.
* TRADE_TYPE - Type of trade
* TRADE_PERIOD - Market period during which a trade was executed.
* BOOK_TYPE - Type of order book or trading mechanism through which a trade was executed.
* MKT_PHASE - Indicates the instrument’s current market phase, as specified by the trading venue
* REASON_CODE - Reason for an instrument status update
* SHORT_SALE_RESTRICTION - Indicates whether short selling is permitted
* UPDATE_TYPE - Type of update
* ORDER_TYPE - Type of order.

#### AGGRESSOR_SIDE - Enumeration

| Enumeration ID   | Enumeration Description                                          |
|------------------|------------------------------------------------------------------|
| ‘””’             | Undefined (e.g. auction trades, trades against hidden liquidity) |
| B                | Buy                                                              |
| S                | Sell                                                             |

#### TRADE_TYPE - Enumeration

| Enumeration ID   | Enumeration Description        |
|------------------|--------------------------------|
| ‘””’             | Regular trade                  |
| H                | Trade against hidden liquidity |

#### TRADE_PERIOD - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| -                | Regular trading           |

#### BOOK_TYPE - Enumeration

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

#### MKT_PHASE - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| ‘””’             | No market phase           |
| 1                | Opening (pre-market)      |
| 2                | Trading                   |
| 3                | Post-trading              |
| 4                | Closed                    |
| H                | Halted                    |
| P                | Paused                    |
| Q                | Quoting                   |

#### REASON_CODE - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| ‘””’             | Unspecified               |
| A                | Administrative            |
| R                | Regulatory                |
| X                | None                      |

#### SHORT_SALE_RESTRICTION - Enumeration

|   Enumeration ID | Enumeration Description             |
|------------------|-------------------------------------|
|                0 | No short sellling restriction       |
|                1 | Short selling restriction in effect |

#### UPDATE_TYPE - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| A                | Add                       |
| D                | Delete                    |
| F                | Fill                      |
| M                | Modify                    |
| P                | Partial fill              |

#### ORDER_TYPE - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| L                | limit order               |