To update the March 18, 2009 Trader Update post, in response to firms’ concerns regarding changes implemented in the initial pilot stock of the Super Display Book (SDBK) deployment, the NYSE will be implementing software changes to reinstate the Cancel Replace to reduce message type into the SDBK environment. The linked Trading Technology Information Memo details the implementation of the order type. This software enhancement will be available for firms to test in the User Acceptance Test (UAT) environment shortly.

Subsequent notification will be issued detailing the deployment of this software to additional pilot stocks.

Trading Technology Information Memo (March 27, 2009)
Current SDBK Securities Rollout List