Stocks that moved substantially or traded heavily Wednesday on the New York Stock Exchange and Nasdaq Stock Market:
Hewlett-Packard Co., down $4.64 at $43.59
The computer company's revenue outlook fell short of analyst expectations despite a string of acquisitions intended to fuel sales growth.
Chevron Corp., up $1.95 at $102.27
The oil and gas company was one of the energy sector's biggest gainers as spreading violence in Libya drove crude prices to two-year highs.
Ford Motor Co., down 37 cents at $14.86
The Supreme Court ruled that a lawsuit against another automaker over seat belts could proceed, and the company recalled almost 150,000 pickup trucks.
Frontier Communications Corp., down 68 cents at $8.52
The landline phone company reported fourth-quarter earnings that fell short of Wall Street analysts' estimates.
Duncan Energy Partners LP, up $7.84 at $40.40
Enterprise Products Partners L.P. is buying the pipeline company in an all-stock deal that values Duncan at $2.4 billion.
Washington Post Co., down $25.83 at $414.55
Revenue dropped at the company's Kaplan education unit, its primary growth driver, as student enrollments declined.
Vertex Pharmaceuticals Inc., up $5.75 at $43.97
The company said its potential cystic fibrosis drug improved lung function in a key late-stage study.
DirecTV Group Inc., up 80 cents at $45.03
The country's largest satellite TV operator attracted more new subscribers in the fourth quarter than it has in any quarter in a decade.