Talk show host Oprah Winfrey, financier George Soros, CNN founder Ted Turner, New York Mayor Michael Bloomberg and financier Peter Peterson gathered at 3 pm on May 5 at the invitation of Bill Gates, Warren Buffett, and David Rockefeller.

The billionaires at the exclusive gathering have combined fortunes of some US$120 billion and have donated up to $72.5 billion since 1996, according to NBC.