The agreement was announced in November. Nasdaq expects to continue operating the exchange, though its employment of about 400 may be reduced.
Philadelphia is the oldest U.S. stock exchange, and has developed into the nation's third-largest options market.
Nasdaq OMX Executive Vice President Christopher Concannon tells the Inquirer that is "a business worth growing."
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Information from: The Philadelphia Inquirer, http://www.philly.com
