Stock exchange operator Nasdaq OMX Group Inc issued the names of hundreds of stocks for which it is canceling trades following Thursday's sudden stock market plunge.

Soon after 2:30 p.m. ET, the Dow Jones Industrial Average fell nearly 1,000 points in its largest ever intraday points drop, which may have involved a trading error.

U.S. stock indices plunged by an average 9 percent in the last two hours of trading before clawing back some of the losses.

Nasdaq OMX said it would cancel trades with price deviations of more than 60 percent between 2:40 p.m. and 3 p.m. from their 2:40 p.m. levels, and the New York Stock Exchange said it would similarly cancel trades on its all-electronic NYSE Arca platform that deviated over 60 percent from their last print at 2:40 p.m. between 2:40 and 3 p.m.

Nasdaq said its decision was made in conjunction with other exchanges and said it could not be appealed.

For a list of the affected stocks, please see: (http://www.nasdaqtrader.com/TraderNews.aspx?id=ETA2010-30)

Amongst the large companies that appear on the list are -

COMPANY NAME RIC

ACCENTURE INC ACN.N

EXELON CORP EXC.N

CENTURYTEL INC CTL.N

ONEOK PARTNERS OKS.N

CENTERPOINT CNP.N

BOARDWALK PIPELINE BWS.N

WINDSTREAM CORP WIN.O

INTERPUBLIC GROUP IPG.N

HANSEN NATURAL HANS.O

LINN ENERGY LINE.O

GENPACT LTD G.N

(Reporting by Phil Wahba and Vikram S Subhedar; Editing by Gary Hill and Anshuman Daga)

New york city