• Can Zuckerberg Possibly Fix Facebook?     Tuesday, 21 Aug 2012 | 3:27 PM ET

    Ben Barr, CNET columnist, explains why we need more time before we blame founder Mark Zuckerberg for Facebook's problems, while Chris Whalen, Tangent Capital Partners, disagrees.

  • Peter Thiel, founder of the Theil Foundation and is a technology entrepreneur, investor, and philanthropist.

    Early Facebook investor Peter Thiel is not a long-term investor in the company and should step down from the company's board of directors, an analyst at Wedbush Securities said Tuesday.

  • Mobile Ads: Facebook vs. Twitter     Tuesday, 21 Aug 2012 | 2:24 PM ET

    Research firm Emarketer says Twitter's ad products are generally more effective than Facebook's, reports CNBC's Julia Boorstin.

  • What Is Facebook Really Worth? Tuesday, 21 Aug 2012 | 1:59 PM ET
    A news ticker announces the falling share price of Facebook in Times Square on August 16, 2012 in New York City. Shares of Facebook fell today on the NASDAQ stock exchange on the first day insiders were allowed to sell their shares.

    With no real basis in a stock with an iffy future, selling pressure will continue for Facebook through the end of the year. Still, there is still value here. TheStreet.com reports.

  • Soros Invests in Man-U     Tuesday, 21 Aug 2012 | 1:55 PM ET

    Discussing Peter Thiel's sale of his Facebook shares, Nike's Lebron James sneakers, and George Soros' $44 million minority stake in Manchester United, with CNBC's John Carney and Robert Frank.

  • Startups See Facebook As A Cautionary Tale     Tuesday, 21 Aug 2012 | 1:17 PM ET

    Peter Thiel has dumped most of his Facebook shares, and other startups are delaying their public filings, reports CNBC's Julia Boorstin.

  • Private Market to Blame for Facebook?     Tuesday, 21 Aug 2012 | 12:40 PM ET

    Fingers are pointing at the secondary market as the main reason behind Facebook's fall from grace following its May IPO. Back in December, investor James Altucher talked about the secondary market's high valuation of the firm.

  • Facebook

    The fact that billionaire investor Peter Thiel sold the majority of his stake in Facebook shouldn’t worry investors, but the social network’s mobile problem certainly should, BTI Richard Greenfield told CNBC's “Squawk on the Street” Tuesday.

  • Startups See Facebook as Cautionary Tale     Tuesday, 21 Aug 2012 | 11:45 AM ET

    Now that Facebook's bubble has burst, startups that once wanted to be the next Facebook, now see it as a cautionary tale, reports CNBC's Julia Boorstin. The bar for going public is now much higher.

  • Facebook Director Thiel Unloads Majority Stake     Tuesday, 21 Aug 2012 | 11:10 AM ET

    Early investor and current Facebook director Peter Thiel has unloaded a majority of his stake in the social network. Michael Pachter, Wedbush Securities, explains what this means to investors.

  • Peter Thiel Exits Large Stake in Facebook     Tuesday, 21 Aug 2012 | 10:11 AM ET

    Facebook early investor Peter Thiel has sold more than 90 percent of his original stake in the company. Rich Greenfield, BTIG analyst, offers insight and explains his concerns over Facebook's growth trajectory..

  • Cramer: You Need to See Thiel BUY Here     Tuesday, 21 Aug 2012 | 8:51 AM ET

    "If people had known that [Peter] Thiel would be unloading stock, obviously they wouldn't be buying stock," says Jim Cramer. "Where's the outrage?"

  • Mohamed El-Erian: The Next 'New Normal'     Tuesday, 21 Aug 2012 | 8:00 AM ET

    Mohamed El-Erian, CEO and co-CIO at PIMCO, says Paul Ryan's definition of "misguided policies" are different than his own. He also offers insight on Peter Thiel's sale of Facebook stock.

  • Peter Thiel was one of the earliest investors in Facebook. But after the lock-up ended, he sold most of his stake, bringing his proceeds to more than $1 billion. Jay Yarrow, Business Insider, offers insight.

  • Facebook’s Ambition Collides With Harsh Market Tuesday, 21 Aug 2012 | 4:00 AM ET
    Mark Zuckerberg

    Once hailed as the most valuable technology company to hit Wall Street, Facebook is now worth just over half what it was three months ago, with shares closing at $20.01 Monday. Wall Street analysts are openly wondering whether its chief executive, Mark Zuckerberg, has the business skills to deliver on his promises, the New York Times reports.

  • Investor Peter Thiel Sells Facebook Shares Monday, 20 Aug 2012 | 6:42 PM ET

    Early investor Peter Thiel has sold nearly all of his Facebook shares, as part of a selling plan he adopted before the company's IPO on May 18.

  • Investor Thiel Unloads Most of His Facebook Shares Monday, 20 Aug 2012 | 5:52 PM ET
    Facebook unlike

    Billionaire investor Peter Thiel has unloaded the majority of his remaining Facebook shares, according to a filing with the Securities and Exchange Commission.

  • CNBC's Julia Boorstin reports on Peter Thiel's plan prior to Facebook's IPO to sell his shares.

  • Sales of Thiel's 22 million Facebook shares was reportedly planned prior to the company's IPO date, reports CNBC's Julia Boorstin.

  • Stocks to Watch: AAPL, URBN, DWA & More Monday, 20 Aug 2012 | 4:46 PM ET

    Check out which companies are making headlines after the bell Monday: