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

       Meta Platforms Inc., down $7.60 to $187.61.

       British and European regulators have threatened to crack down on an agreement between Google and Facebook's owner for online display advertising.

       Pfizer Inc., up $1.07 to $50.27.

       The drug developer completed its buyout of Arena Pharmaceuticals.

       FedEx Corp., down $6.10 to $213.18.

       The package delivery service said Richard W. Smith will replace retiring Donald F. Colleran as president and CEO of FedEx Express.

       DocuSign Inc., down $18.87 to $75.01.

       The provider of electronic signature technology gave investors a disappointing revenue forecast.

       Pearson Plc., up $1.54 to $10.23.

       Apollo is reportedly considering buying the education and publishing company.

       Applied Materials Inc., down $1.33 to $123.64

       The maker of chipmaking equipment increased its dividend and announced a $6 billion stock buyback plan.

       Zumiez Inc., down $3 to $40.07.

       The clothing retailer's fourth-quarter earnings and revenue fell short of Wall Street forecasts.

       El Pollo Loco Holdings Inc., down $1.34 to $11.41.

       The Tex-Mex fast food chain declined to give a financial forecast for the year.