Stocks that traded heavily or had substantial price changes Friday:

       Costco Wholesale Corp., up $5.22 to $412.37.

       The warehouse retail chain gave investors an encouraging sales report for June.

       Cirrus Logic Inc., up $2.19 to $85.79.

       The chipmaker is buying Lion Semiconductor for $335 million in cash.

       Dominion Energy Inc., down 40 cents to $75.55.

       The utility company and its peers lagged the broader market as investors focused on stocks with higher growth potential.

       KB Home, up $1 to $39.83.

       The homebuilder increased its stock buyback program by 3 million shares.

       Stamps.com Inc., up $126.51 to $324.23.

       Thoma Bravo is buying the online postage provider for about $6.6 billion.

       Greenbrier Companies Inc., up $3.23 to $43.27.

       The maker of railroad freight car equipment handily beat Wall Street’s fiscal third-quarter earnings forecasts.

       Matson Inc., up $5.69 to $68.12.

       The transportation services company gave investors an encouraging financial update.

       AZZ Inc., up $6.03 to $57.57.

       The electrical equipment maker's fiscal first-quarter earnings and revenue beat Wall Street forecasts.