Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq Stock Market: Oil stocks tracked the price of crude, which shook off early losses and rallied on a report of a June drop in U.S. production. The coal mining company is extending its private debt exchange offer, which had been set to expire Friday, to September 23. The direct-to-consumer products and marketing company is being sold to asset manager The Carlyle Group for $98 million.