Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market:
AutoNation Inc., down $1.50 at $33.01
The auto dealership chain cut its full-year forecast for U.S. auto sales because of parts shortages caused by the Japanese earthquake.
Humana Inc., up $4.01 at $76.69
The health insurer will start offering a 25-cent quarterly dividend, its first since 1993, and raised its profit forecast for the year.
Ford Motor Co., up 12 cents at $15.66
The automaker posted its best first-quarter profit in 13 years thanks to strong sales of new, more fuel-efficient cars and higher prices.
Delta Air Lines Inc., up 99 cents at $9.99
The airline said raising fares should help offset the higher fuel prices that drove a $318 million loss during the first quarter.
Vertex Pharmaceuticals Inc., up $4.88 at $52.92
The FDA said the company's anticipated hepatitis C drug successfully treats a majority of patients faster than older drugs do.
Lawson Software Inc., down $1.07 at $11.06
The company agreed to be bought by private equity firm Golden Gate Capital and rival Infor for about $2 billion.
Netflix Inc., down $22.76 at $228.91
The streaming video company's forecast disappointed investors worried about subscriber growth slowing as competition increases.
E-Trade Financial Corp., down 65 cents at $16.15
Citadel LLC, the online brokerage's largest shareholder, plans to shrink its stake with a large stock sale, the second announced this year.