A Toyota Prius that sped out of control on a California freeway was towed to a dealership Tuesday while federal and company inspectors converged on the car to determine whether a stuck gas pedal was to blame.

Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market: NYSE:

Select Medical Holdings Corp. shares tumbled Tuesday, a day after a media report said the Senate Finance Committee is investigating patient deaths and allegations of substandard treatment at long-term care hospitals.

One year to the day after stocks fell to their worst close in more than 12 years, the U.S. market spent most of Tuesday spinning its wheels.

Shares of U.S. airlines rose Tuesday after executives at leading carriers said business travel is picking up and revenue from extra fees is rising.

Shares of Systemax Inc., an electronics retailer, shot higher Tuesday after the company said its fourth-quarter earnings jumped 84 percent.

An analyst lowered his rating on the operator of Chuck E. Cheese theme restaurants on Tuesday because the stock price has jumped 50 percent since last fall.

Ameriprise Financial Inc. Chairman and CEO James M. Cracchiolo saw his total compensation grow 52 percent in 2009 to $18.2 million, largely because he earned a cash incentive after receiving no such award the previous year.

Shares of Invesco Ltd. fell on Tuesday after the investment manager reported its managed assets total was largely unchanged at the end of February compared with the previous month.

This 'boring' company has its problems, but it produces a dependable profit.

Shares of Arris Group Inc. jumped Tuesday after Needham & Co. upgraded the provider of equipment for the cable industry, predicting a growth spurt led by international sales and new products.

Shares of Thor Industries Inc. fell Tuesday after the recreational vehicle and bus maker's fiscal second-quarter earnings fell short of analysts' expectations.

Shares of Sprint Nextel Corp. jumped for a second day Tuesday as investors cheered signals that the lagging telecommunications company is getting stronger.

A recovery in the wind energy sector starting in the second half of the year will boost sales growth for Broadwind Energy Inc., a JPMorgan analyst said Tuesday.

Shares of Cerus Corp. rose Tuesday as an R.W. Baird analyst upgraded his rating on the company, citing the value and potential of the Intercept blood system.

Human Genome Sciences Inc. said Tuesday it named David P. Southwell executive vice president and chief financial officer to replace Timothy C. Barabe.

Shares of Zumiez Inc., which sells skateboards, snowboards and related apparel, rose on Tuesday after an analyst said the retailer has good momentum.

Shares of Zoran Corp. fell Tuesday after a Collins Stewart analyst downgraded the company to "Hold" from "Buy" on concerns about an oversupply of the digital televisions that use its chips.

Shares of Texas Instruments Inc. slipped Tuesday as investors gave the chip maker's latest financial projections a cool reception.

Here's what our research has discovered about trend following and why this feel good investing method can sometimes spell disaster for the investor.