(AP)—Facebook's beleaguered stock is set to end the week on a high note, pulling Zynga with it.
CEO Mark Zuckerberg jump-started Facebook's stock earlier this week when he talked up the company's mobile ambitions and acknowledged it has made mistakes.
His comments came in his first interview since Facebook's botched Wall Street debut in May.
Facebook also launched its advertising exchange on Thursday. Facebook Exchange lets advertisers target users in real-time, based on outside websites they visit. So if you visit a store's website, you might see ads from them on Facebook.
Facebook's stock is up more than 5 percent at midday. It's up 15 percent for the week.
Shares in Zynga, the struggling online company behind "FarmVille" and other games, are up 4 percent. Week-to-date they're up 7 percent.
Explore further: Google looks for more revenue from ads in Android app store