Facebook’s shares climbed 10 percent from a week ago in a private auction that valued the company at $103.4 billion. SharesPost, which arranges sales of shares in privately held companies, said it completed an auction of 150,000 shares of Class B stock today at a clearing price of $44. That’s up 10 percent from a week ago, where shares cleared at $40 with a $94 billion valuation. Facebook may raise around $5 billion after filing for an initial public offering last week. While we don’t know what the ultimate market capitalization will be, the fact that the shares cleared at a…

