TradingSessionID (Tag = 336, Type: String)

Identifier for Trading Session

Can be used to represent a specific market trading session (e.g. "PRE-OPEN", "CROSS_2", "AFTER-HOURS", "TOSTNET1", "TOSTNET2", etc).

To specify good for session where session spans more than one calendar day, use TimeInForce (59) = Day in conjunction with TradingSessionID (336) .

Values should be bi-laterally agreed to between counterparties.

Firms may register Trading Session values on the FIX website (presently a document maintained within "ECN and Exchanges" working group section).

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