U.S. stock and options markets closed today, the first unscheduled, market-wide shutdown since September 2001, and may remain closed Tuesday, the Wall Street Journal
The NASDAQ OMX Group today
“The decision was made in consultation with other U.S. exchanges, government officials and regulators - including the Securities and Exchange Commission,” according to a statement for the exchange. “The continuity of our markets and a variety of factors related to Hurricane Sandy's movement up the Eastern Seaboard were considered, including the state of eagmergencies declared by New York City, New York State and other state and local governments.
In consultation with other exchanges and market participants, NYSE Euronext also
“We will work with the industry to determine the next steps in restoring trading as soon as the situation permits.”
But Business Insider
According to the memo, the firm has activated its "Business Continuity Plans" whereby it will use teams in London and other locations around the world for additional support. They also have people working from the firm's Greenwich, Conn. and Princeton, N.J. locations. Others will be working from home, the memo states.