FIX.4.2 Aggregated Allocation support on the sell side

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Imported from previous forum

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[ original email was from jim whitehead - jwhitehead@latentzero.com ]
Hello

A brief query to those working on the sell side, is there wide support for the concept of FIX4.2 Allocation messages from the buyside, which effectively aggregate all executions received from a single trade into a single message.

From a brief scan of the site this looks like it may be officially handled only in later versions of the protocol.

Regards
Jim

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I’m on the buyside, but we have a lot of brokers who support this for us with 4.2 and lower. Aggregating all of the executions for one or more orders into a single message (the “block trade”) which is then split out amongst one or more accounts (the “shapes” or “splits”) is by definition what the Allocation message represents.

Hello

A brief query to those working on the sell side, is there wide support
for the concept of FIX4.2 Allocation messages from the buyside, which
effectively aggregate all executions received from a single trade into a
single message.

From a brief scan of the site this looks like it may be officially
handled only in later versions of the protocol.

Regards Jim