Stocks that moved substantially or traded heavily Friday:
Viacom Inc., down $4.85 to $30.22
The parent company of Paramount Pictures reported trouble with a movie financing deal with a Chinese company.
Weight Watchers International Inc., up $8.31 to $41.39
The weight loss company raised its forecasts for the year after it reported better results than analysts expected.
Western Union Co., up 14 cents to $19.72
The money transfer company had a strong second quarter and said digital transfers climbed.
Yelp Inc., up $8.68 to $40.05
Grubhub agreed to buy Yelp's Eat24 online food-ordering business for $287.5 million.
GoPro Inc., up $1.59 to $9.85
The action video camera maker posted sales that were much stronger than Wall Street anticipated.
KeyCorp, up 37 cents to $18.40
Banks climbed as interest rates increased following a stronger-than-expected jobs report for July.
Etsy Inc., up $1.56 to $15.15
The online crafts marketplace reported a bigger profit than investors expected and said it is cutting costs.
Fluor Corp., down $3.80 to $40.06
The engineering and construction company slashed its profit forecasts after it took a charge related to gas-fired power projects.