# New York Stock Exchange NYSE Enumerations

NYSE stands for the New York Stock Exchange. Located on Wall Street in New York City, it is the world’s largest equities-based exchange by market capitalization. It functions as a centralized marketplace where shares in major public companies are bought and sold.

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_TYPE_EXT - Extended trade type code
* ODD_LOT - Indicates whether a trade was an odd lot
* 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.
* RPI - Indicates the presence of Retail Price Improvement interest on bid and/or ask side
* COND - Condition code
* COND2 - Second condition code
* COND3 - Third condition code
* 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
* SESSION - Trading session to which the update relates, e.g. “Day”, “Night”, “T”, “T+1”
* 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                          |
| A                | Auction trade                          |
| H                | Regular trade against hidden liquidity |

#### TRADE_TYPE_EXT - Enumeration

| Enumeration ID   | Enumeration Description          |
|------------------|----------------------------------|
| @                | Standard settlement              |
| ‘” “’            | No trade-through exemption       |
| F                | Intremarket sweep                |
| O                | Market center opening trade      |
| 5                | Re-opening trade                 |
| 6                | Market center closing trade      |
| T                | Extended hours                   |
| U                | Extended hours + out of sequence |
| Z                | Out of sequence                  |
| I                | Odd lot trade                    |

#### ODD_LOT - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| Y                | Odd lot                   |
| ‘””’             | Not an odd lot            |

#### TRADE_PERIOD - Enumeration

| Enumeration ID   | Enumeration Description        |
|------------------|--------------------------------|
| -                | Regular trading                |
| C                | Closing auction                |
| E                | Extended hours (Early session) |
| L                | Extended hours (Late session)  |
| O                | Opening auction                |
| U                | Unscheduled auction            |

#### BOOK_TYPE - Enumeration

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

#### RPI - Enumeration

| Enumeration ID   | Enumeration Description             |
|------------------|-------------------------------------|
| ‘””’             | No retail interest                  |
| A                | Retail interest on bid side         |
| B                | Retail interest on ask side         |
| C                | Retail interest on bid and ask side |

#### COND - Enumeration

| Enumeration ID   | Enumeration Description                                               |
|------------------|-----------------------------------------------------------------------|
| ‘””’             | No condition                                                          |
| P                | Closing auction extended due to extreme closing imbalance             |
| R                | Significant closing imbalance (imbalance >500 round lots at 15:50 ET) |

#### COND2 - Enumeration

|   Enumeration ID | Enumeration Description                                                            |
|------------------|------------------------------------------------------------------------------------|
|                0 | Auction will run                                                                   |
|                1 | Auction will run + interest exists within the auction collars or imbalance is zero |
|                2 | Auction will not run because of an imbalance outside the auction collars           |
|                3 | Auction will not run and will transition to the closing auction instead            |

#### COND3 - Enumeration

|   Enumeration ID | Enumeration Description                                                    |
|------------------|----------------------------------------------------------------------------|
|                0 | No imbalance freeze                                                        |
|                1 | Imbalance freeze - MOO/LOO orders cannot be entered / modified / cancelled |

#### MKT_PHASE - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| ‘””’             | Unspecified               |
| 4                | Halted                    |
| 6                | Suspended                 |
| B                | Begin accepting orders    |
| E                | Early session             |
| L                | Late session              |
| O                | Core session              |
| P                | Pre-open                  |
| X                | Closed                    |

#### REASON_CODE - Enumeration

| Enumeration ID   | Enumeration Description                         |
|------------------|-------------------------------------------------|
| ‘””’             | Unspecified                                     |
| 1                | Market-wide circuit breaker (MWCB) halt level 1 |
| 2                | Market-wide circuit breaker (MWCB) halt level 2 |
| 3                | Market-wide circuit breaker (MWCB) halt level 3 |
| 6                | Suspended                                       |
| A                | Additional information requested                |
| C                | Regulatory concern                              |
| D                | News disseminated                               |
| E                | Merger effective                                |
| F                | ETF component prices not available              |
| I                | Order imbalance                                 |
| M                | LULD pause                                      |
| N                | Corporate action                                |
| O                | New security offering                           |
| P                | News pending                                    |
| V                | Intraday indicative value not available         |
| X                | Equipment changeover                            |

#### SHORT_SALE_RESTRICTION - Enumeration

| Enumeration ID   | Enumeration Description             |
|------------------|-------------------------------------|
| ‘””’             | Unspecified                         |
| 0                | No short selling restriction        |
| 1                | Short selling restriction in effect |

#### SESSION - Enumeration

| Enumeration ID   | Enumeration Description              |
|------------------|--------------------------------------|
| Main             | Main trading session                 |
| Pre-Market       | Extended hours - pre-market session  |
| Post-Market      | Extended hours - post-market session |

#### UPDATE_TYPE - Enumeration

| Enumeration ID   | Enumeration Description                                                                                         |
|------------------|-----------------------------------------------------------------------------------------------------------------|
| A                | Add                                                                                                             |
| D                | Delete                                                                                                          |
| F                | Fill                                                                                                            |
| M                | Modify                                                                                                          |
| N                | Fill (non-printable - does not appear in trade tickers as the execution is part of an aggregated auction print) |
| O                | Partial fill (non-printable)                                                                                    |
| P                | Partial fill                                                                                                    |
| R                | Refresh                                                                                                         |

#### ORDER_TYPE - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| L                | Limit order               |