NEW YORK -- Stocks that traded heavily or had substantial price changes Tuesday:

       Walmart Inc., down $16.86 to $131.35.

       The nation's largest retailer trimmed its profit forecast for the year as it grapples with surging inflation.

       United Airlines Holdings Inc., up $3.43 to $46.97.

       The airline raised its revenue forecast for the current quarter as demand for travel improves.

       Take-Two Interactive Software Inc., up $12.97 to $123.08.

       The maker of “Grand Theft Auto” and other video games reported strong fiscal fourth-quarter profits.

       Stratasys Ltd., up $2.18 to $19.30.

       The maker of 3D printers beat Wall Street's first-quarter earnings and revenue forecasts.

       Abbott Laboratories, up $4.83 to $114.54.

       The infant formula maker will restart production at its largest domestic factory, a key step toward easing a nationwide shortage.

       Citigroup Inc., up $3.59 to $51.05.

       Warren Buffett’s Berkshire Hathaway holding company revealed new stakes in the bank and several other companies.

       Caterpillar Inc., up $5.90 to $213.09.

       The maker of backhoes and bulldozers announced a $15 billion stock buyback program.

       Fluor Corp., down $1.98 to $25.20.

       The U.S. government cancelled a contract that has been beneficial to the engineering and operations company.