Indexes

Message Layouts
Session
PreTrade
Trade
PostTrade
Infrastructure

Field

MidPx

ID (tag)631
Abbr NameMidPx
TypePrice
PedigreeAdded FIX.4.3, Updated EP175
Mid price/rate.
For OTC swaps this is the mid-market mark (for example, as defined by CFTC).
For uncleared OTC swaps, LegMidPx(2346) and the MidPx(631) fields are mutually exclusive.

Orchimate Copyright 2026 Atomic Wire Technology Limited
Orchestra Copyright 2026 FIX Protocol Ltd
Terms of Use|Privacy Policy