Nov. 17 (Bloomberg) -- The following companies may have unusual price changes in U.S. trading today. Stock symbols are in parentheses, and share prices are as of 8 a.m. in New York, unless otherwise specified.

American Express Co. (AXP US): The credit-card company may rise to $30 a share during the next year as it remains ``solidly profitable'' and attracts investors such as Warren Buffett, Barron's reported, without citing anyone. American Express fell 3.8 percent to $19.99 on Nov. 14.

Charles Schwab Corp. (SCHW US): The discount brokerage may rise once the financial market stabilizes, as its steady revenue stream and lean cost structure make the stock more resilient than other brokerages, Barron's reported, without citing anyone. Schwab fell 7.2 percent to $16.61 in trading on Nov. 14.

Colgate-Palmolive Co. (CL US): The consumer products company may rise to $79 as its brand power and lower commodity prices help it improve earnings, Barron's reported, citing Lauren DeSanto, an equity analyst at Morningstar Inc. Colgate lost 2.6 percent to $62.06 in Nov. 14 trading.

ConocoPhillips (COP US) rose 46 cents to $47.85. Warren Buffett's Berkshire Hathaway Inc. (BRK/A US) increased its stake in the oil producer and held more than 83 million shares as of Sept. 30, according to a regulatory filing.

Dell Inc. (DELL US) slipped 1.5 percent to $10.74. The second-largest personal-computer maker was cut to ``neutral'' from ``buy'' at Merrill Lynch & Co., which said PC sales will fall next year as companies cut spending amid a slowing economy.

Gilead Sciences Inc. (GILD US) fell 2.4 percent to $45.80 in late trading on Nov. 14. The leading maker of AIDS treatments said Teva Pharmaceutical Industries Ltd. (TEVA IT) has expressed its intention to make a generic version of Gilead's top-selling drug Truvada.

General Motors Corp. (GM US) rose 7 percent to $3.22. The largest U.S. automaker plans to sell its stake in Suzuki Motor Corp., raising 22.4 billion yen ($230 million) as it tries to avoid a collapse. Separately, GM's Opel will hold talks with German Chancellor Angela Merkel today on receiving government financial support.

Genworth Financial Inc. (GNW US) jumped 22 percent to $1.80. The insurer spun off from General Electric Co. said it's negotiating to buy a Minnesota savings and loan to get funds from the U.S. government rescue program.

Goldman Sachs Group Inc. (GS US) declined 2 percent to $65.40. The U.S. securities firm that converted to a bank holding company in September probably will have a fourth-quarter loss of 54 cents a share, said Sanford C. Bernstein & Co. analyst Bradley Hintz.

Honda Motor Co. (HMC US): The Japanese automaker may be undervalued after the stock declined 46 percent from a year earlier amid a slowing global economy and falling vehicle demand, Barron's reported, citing Steven Usher, an analyst at Japaninvest Co. Honda's American depositary receipts fell 76 cents to $21.65 on Nov. 14.

Lowe's Cos. (LOW US) fell 3.9 percent to $17.51. The second-largest home-improvement retailer reduced its full-year profit forecast after weakened consumer confidence and fewer home sales led to a slowdown in remodeling projects.

Nokia Oyj American depositary receipts (NOK US) added 2.1 percent to $12.85. The world's largest mobile-phone maker was upgraded to ``buy'' from ``neutral'' at Merrill Lynch & Co. and raised to ``outperform'' from ``underperform'' at Sanford C. Bernstein. Both cited the company's accelerated product portfolio renewal and recent fall in stock price.

United Therapeutics Corp. (UTHR US) slumped 31 percent to $62.50. The Silver Spring, Maryland-based drugmaker said a drug called treprostinil failed to meet its endpoint in a study to treat pulmonary arterial hypertension. United Therapeutics also said it will buy the rights to market Eli Lilly & Co.'s (LLY US) impotence pill as therapy for the rare form of high blood pressure.

Xcel Energy Inc. (XEL US): The biggest U.S. supplier of wind-generated power to retail customers proposed a $174.7 million electricity rate increase for Colorado. The stock fell 1.6 percent to $17.98 in regular trading Nov. 14.

To contact the reporters on this story: Elizabeth Campbell in New York at ecampbell11@bloomberg.net; Whitney Kisling in New York at wkisling@bloomberg.net

Last Updated: November 17, 2008 08:49 EST