Facebook CEO Mark Zuckerberg capped the week of a lifetime, changing his own status to married Saturday after wedding Priscilla Chan just a day after his company went public, he announced. Zuckerberg posted a wedding picture with his bride, where else but on his Facebook page. \"Mark added a life event to May 19, 2012 on his timeline: Married Priscilla Chan,\" was the only description of the shot of the bride in white and the groom -- famous for his attachment to casual clothes -- all smiles in a dark suit and tie on his other big day. Facebook stumbled on its first trading day Friday as shares ended barely above the starting price after a glitch-plagued market debut on the Nasdaq that failed to live up to its enormous hype. The stock, priced at $38 on Thursday in the largest-ever initial public offering (IPO) for a technology firm, eked out a gain of just 0.61 percent to end at $38.23, amid record volume of more than 575 million shares traded. Shares in the social network titan saw roller-coaster action in what was one of most keenly awaited stock issues in history. The day began with a 30-minute delay in trade, an incident which regulators are still reviewing.