With The Carlyle Group's 306 million fully diluted units, per their latest investor presentation, one can calculate the holdings of Carlyle's three co-founders, David Rubenstein, William Conway, and Daniel D'Aniello.
Each co-founder holds roughly 47 million units, for a combined total of 143 million units.
That's nearly 47% of all Carlyle units. At current valuations, each co-founder holds over $1 billion worth of Carlyle.
PEU Report/State of the Division