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

       Norfolk Southern Corp., up $3.49 to $289.15.

       The railroad announced a $10 billion stock buyback program.

       Lululemon Athletica Inc., up $32.95 to $376.92.

       The athletic apparel maker gave investors a strong sales forecast.

       Chewy Inc., down $8.21 to $42.79.

       The online pet store's fiscal fourth-quarter loss was worse than analysts expected.

       Restoration Hardware Holdings Inc., down $51.41 to $334.28.

       The furniture and housewares company warned investors that demand softened in the first quarter.

       PVH Corp., down $5.79 to $82.69.

       The owner of the Calvin Klein and Tommy Hilfiger brands gave investors a disappointing profit forecast.

       Cal-Maine Foods Inc., up 81 cents to $52.77.

       The egg producer's fiscal third-quarter revenue beat Wall Street forecasts.

       UniFirst Corp., down $8.26 to $182.14.

       The uniform provider's fiscal second-quarter profit fell short of analysts' forecasts.

       MillerKnoll Inc., up $1.68 to $34.67. The furniture maker gave investors an encouraging earnings forecast.