As previously announced, in the first quarter of 2010, the NYSE Amex plans to trade NASDAQ listed equities on an Unlisted Trading Privilege (UTP) basis. In support of that effort, [+]the NYSE has been supporting Saturday industry testing opportunities in the production environment, the next of which is scheduled for Saturday, December 12, 2009. Firms wishing to participate in the test must register by sending an email to Michael Paulyson at mpaulyson@nyx.com. Please see the linked documents below for further details.

Trading Technology Info Memo - NYSE Amex Trading of NASDAQ Symbols Under UTP – Industry Testing
Trading Technology Info Memo - NYSE Amex Trading of NASDAQ Symbols Under UTP
Trading Technology Info Memo - PT 160