Identifies the type of venue where the trade was executed for the side.
| Code | Meaning |
|---|---|
| E | Electronic exchange |
| P | Pit |
| X | Ex-pit |
| C | Clearinghouse |
| R | Registered market |
| O | Off-market |
| B | Central limit order book |
| Q | Quote driven market |
| D | Dark order book |
| A | Auction driven market |
| N | Quote negotiation |
| V | Voice negotiation |
| H | Hybrid market |
| z | Other market (lowercase "z") |