Synthetic contracts are calculated from closing day prices. Therefore, the typical trading day is made up of three distinct parts:

1. Morning Reports: Operations staff work with end clients to agree previous days margin account balances. New synthetics trades and modifications are entered on demand.
2. System Sign-Off: Operations staff have finalized the margin account balance & payments with end clients. Xylinq prohibits any changes or modifications which would cause a change to the contract valuations. Only new synthetics trades for today are allowed.
3. End of Day: Xylinq is loaded with closing market data and it calculates the day’s contract valuations and updates the margin accounts appropriately.

The System Admin Screen allows users to control the operational aspects of Xylinq.
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