That's right: Mark Zuckerberg will leave his Facebook co-founder, Dustin Moskovitz, as the richest man in his age decade. That is, for a grand total of 8 days, until Moskovitz hits the milestone.
In honor of occasion, we're taking a look at the quickly shrinking billionaires under 30 list.
Age: 29 (and 364 days)
What does he do? Facebook
Age: 29 (and 356 days)
What does he do? Co-founded Facebook; now works at Asana, his software company
Anton Kathrein, Jr.
What does he do? Runs his family's giant antenna company
Perenna Kei & family
Country: Hong Kong
What does she do? Works as a non-executive director at her father's real estate company
Zuckerberg doesn't have much to 'unlike,' though. He's staying on a list that's only slightly less exclusive, Forbes' Youngest Billionaires list, which has now dwindled down to 29 under 40.
On top of that, this year he grew his wealth faster than anyone on the planet. Who else can't wait to see what Zuckerberg does with his next decade?