NEW YORK (AP) — Stocks that moved substantially or traded heavily Friday: Fluor Corp., down $13.23 to $45.76 The company slashed its annual forecast because of problems with a gas-fired power project. Shake Shack Inc., up $8.54 to $55.95 The burger chain had a better first quarter than analysts expected. Pandora Media Inc., up $1.14 to $6.89 The music streaming service posted a smaller loss and more revenue than Wall Street had forecast. Weight Watchers International Inc., up 13 cents to $69.83 The weight-loss program company raised its annual profit forecast after its first-quarter report. Apple Inc., up $6.94 to $183.83 Warren Buffett said his company, Berkshire Hathaway, bought more stock in the tech giant. Newell Brands Inc., up 96 cents to $27.65 The consumer products company agreed to sell its disposable cups and cutlery business. CBS Corp., $4.43 to $53.17 Reuters reported that Shari Redstone, whose family controls CBS and Viacom, has dropped a demand that Viacom's CEO be No.Read more on NewsOK.com