share: digg facebook twitter WALL STREET CONNECTION: After being priced at $45 in its initial public offering, LinkedIn Corp.'s shares soared as high as $122.70 before closing Thursday at $94.25. It was the biggest one-day gain for a Silicon Valley IPO since 2007 and left the online networking company with a $9 billion market value. DOT-COM MEMORIES: Some people think LinkedIn's IPO could trigger another boom reminiscent of the late 1990s when hundreds of Internet companies went public.