Appendix D: Order State Change Matrices

D28 – GTC order with partial fill, a 2:1 stock split then a partial fill and fill the following day

Time Message Received (ClOrdID, OrigClOrdID) Message Sent (ClOrdID, OrigClOrdID) Exec Type Ord Status Exec Trans Type Order Qty Cum Qty Leaves Qty Last Shares Day Order Qty Day Cum Qty Comment
Day 1,1 New Order(X) 10000
Day 1,2 Execution(X) New New New 10000 0 10000 0
Day 1,3 Execution(X) Partial Fill Partially Filled New 10000 2000 8000 2000 Execution for 2000 @ 50
Day 1,4 Execution(X) Done for Day Done for Day New 10000 2000 8000 0 Optional at end of trading day
Day 2,1 Execution(X) Restated Partially Filled New 20000 4000 16000 0 16000 0 Sent the following morning after the split ExecRestatementReason = GTC corporate action. AvgPx=25, DayAvgPx=0
Day 2,2 Execution(X) Partial Fill Partially Filled New 20000 9000 11000 5000 16000 5000 Execution for 5000
Day 2,3 Execution(X) Fill Filled New 20000 20000 0 11000 16000 16000 Execution for 11000

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