Shareholders of Facebook (Nasdaq: FB), the No. 1 social network, already know: priced a week ago at $38, shares once hit $45 but closed Wednesday at $32.

That valued the Menlo Park, Calif., company at only $68.4 billion, compared with $105 billion May 18, the first day of trading on Nasdaq. That's one of the biggest losses ever, about $36.6 billion.

Early indicators Thursday are for the price to rise as much as 68 cents in early trading, perhaps salvaging the wounds of initial public offering buyers.