Investors excited about Weight Watchers,Yelp and GoPro shares

Here’s a look at some of the stocks the Yahoo Finance team will be watching for you today

ADP (ADP) tops our list, with shares of the payroll processor company on the move this morning following news that activist investor Bill Ackman’s Pershing Square is looking to take control of the company by nominating five directors to the board and urging to replace CEO Carlos Rodriguez .

Shake Shack (SHAK) cut its outlook for the year after posting lower-than-expected same-store sales for last quarter. However, the burger chain’s earnings and revenue topped analyst estimates.

Weight Watchers (WTW) shares soared this morning after its subscriber base grew a whopping 20% last quarter. The weight loss company has gained a lot of traction in the last two years after celebrity Oprah Winfrey bought a stake in the company and advertised for the brand. Weight watchers also delivered a big beat on both its top and bottom lines for the second quarter and raised its earnings outlook for the year.

Yelp (YELP) stock surged in early trading after the food app broke bread with GrubHub (GRUB). Yelp is selling its Eat24 food-delivery business to the owner of Seamless and Menupages for nearly $288 million. That’s twice what Yelp paid for Eat24 just two years ago. The deal allows Yelp users to order online directly from GrubHub. Yelp also posted an unexpected profit for the second quarter.

And investors are getting excited about shares of GoPro (GPRO) once again. The stock was sharply higher on Friday after the action camera maker lifted its outlook for the current quarter following a smaller-than-expected loss for the second quarter. Revenue also beat estimates, jumping 34% from a year ago thanks to cost cutting and strong demand for its products. GoPro also said it’s on track to launch the latest version of its flagship camera by the holiday season.

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