Frequent attendees, including Henry A. Kissinger and David Rockefeller, are expected again. A copy of last year’s guest list, leaked to a journalist covering the conference, offers a window into just how much influence Bilderberg guests wield.

Google Chairman Eric Schmidt, World Bank President Robert B. Zoellick, European Central Bank President Jean-Claude Trichet, Queen Beatrix of the Netherlands and Greek Minister of Finance George Papaconstantinou were reportedly among those in attendance at the 2011 meeting in Switzerland.

Global business titans, government officials and political figures rounded out the guest list of more than 100, though skeptics suspect dozens of names, especially of high-profile individuals, are kept off of it.