Message Format
FIX messages are ASCII formatted. The user will be provided with a SenderCompId and SenderSubId that must be sent on every message. The TargetCompId for all messages the user sends will be BATS, CBOE, CTWO, or EDGX. All messages the user receives will have the Sender and Target fields swapped.
| Destination Exchange | TargetCompID |
|---|---|
| BZX Options | BATS |
| Cboe Options (C1) | CBOE |
| C2 Options | CTWO |
| EDGX Options | EDGX |





