New Database (SDBK): Implementation Update

On March 16th, 2009, the NYSE began the implementation of its new SDBK database and has successfully deployed approximately 120 NYSE and NYSE Amex symbols to the new environment. The new database has dramatically improved performance and reduced system latencies to approximately a 5 millisecond turnaround for automatic executions. Considering the magnitude of change and the resulting latency reductions achieved only a few issues have surfaced.

To date several of these issues have been addressed. With the implementation of the next release, targeted for 5/21, the following remaining issues will be addressed:

• Cancels and reports for prior day GTC Orders previously entered into SDOT will now be correctly sent back to firms via CCG.
• When a cancel request is submitted for an order that is already executed, a 'Cancel Reject' will be sent instead of a 'Replaced' message and the ClientOrderID will always be populated.
• The contra firm for the Odd Lot portion of a Market on Close (MOC) Partial Round Lot will be sent back to firms via CCG with the correct DMM Clearing Mnemonic.
• When the Round Lot portion of a Partial Round Lot order is executed, but the Odd Lot portion is cancelled, firms will receive a 'Partial Fill' rather than a 'Full Fill'.
• Duplicate Turnaround numbers will no longer be created on post trade output.

On May 12, 2009, the NYSE corrected an issue to allow the Odd Lot portion of a Partial Round Lot to be cancelled once the Round Lot portion has been fully executed.

Note: additional stocks will not be deployed on SDBK until the above release has been implemented.