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Carlyle's Rubenstein Builds Family Office With Outside Ambitions

  • His daughter Alexa Rachlin is on staff of Declaration Partners
  • Bloomberg Billionaires Index puts his fortune at $2.8 billion

David Rubenstein’s love of historical documents runs deep. The billionaire co-founder of Carlyle Group LP owns a copy of the Magna Carta from 1297, a rare facsimile of the Declaration of Independence and an Emancipation Proclamation signed by Abraham Lincoln.

When it came time for Rubenstein, 68, to name his family office, he dubbed it Declaration Capital. He created the firm last year as he stepped back from his role as co-chief executive officer of Carlyle and became co-executive chairman.