* The stocks still trading on other exchanges
* NYSE will not hold closing auction for affected stocks
* Open orders in question should be considered canceled
NEW YORK, Nov 12 (Reuters) - NYSE Euronext on Monday suspended trading in over 200 stocks on the New York Stock Exchange due to a technical problem with a server, though the stocks in question were still trading actively on other markets.
There will be no closing auctions in the affected stocks, and a list of the official closing prices for the securities, based on the consolidated last sale, will be distributed via email and NYSE's website, the exchange operator said.
NYSE first alerted traders it was having problems with one of its cash equity matching engines at 9:38 a.m., and it said it would not publish quotes on a total of 216 stocks, including CVS Caremark Corp and Lazard Ltd.
Nasdaq OMX Group, BATS Global Markets and Direct Edge exchanges stopped sending orders to the NYSE, declaring "self help" against the exchange.
"Orders were coming in, but those who were issuing the orders were not getting their confirmations or their reports, so we felt it was best to zero it out, if you will, and then to suspend trading of those stocks on our market," said Rich Adamonis, an NYSE spokesman.
NYSE said that any open orders should be considered canceled.
Adamonis said the server issues were still being investigated at around 3 p.m., but said they came as the issues were being moved over to a new trading platform.
NYSE is in the process of moving all of its markets - including bonds, options, futures and cash equities - in the United States and Europe to a universal electronic trading platform.
The New York-based company's European markets have been fully integrated with the new system, and the exchange is now in the process of moving over its roughly 3,800 U.S. cash equities issues to the new platform, with about 800 having been migrated so far, Adamonis said.
The migration will continue to be rolled out through the rest of the year, he added.
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