▁ ▁A ▁rapid ▁rise ▁in ▁the ▁price ▁of ▁Facebook ▁stock ▁saw ▁his ▁net ▁worth ▁so ar ▁from ▁$ 1 3 . 3 ▁billion ▁in ▁ 2 0 1 3 ▁to ▁$ 2 8 . 5 ▁billion ▁in ▁ 2 0 1 4 . ▁ ▁Wh ats App ▁co - found er ▁Jan ▁K ou m ▁saw ▁his ▁net ▁worth ▁rise ▁from ▁less ▁than ▁a ▁billion ▁to ▁$ 6 . 8 ▁billion . ▁ ▁He ▁deb uted ▁at ▁# 2 0 2 ▁overall , ▁while ▁partner ▁Brian ▁Act on ▁deb uted ▁at ▁# 5 5 1 ▁with ▁$ 3 ▁billion . ▁ ▁A ▁total ▁of ▁ 1 , 6 4 5 ▁people ▁made ▁the ▁ 2 0 1 4 ▁billion aire ▁list , ▁represented ▁combined ▁wealth ▁of ▁$ 6 . 4 ▁tr ill ion . ▁ ▁Of ▁those , ▁a ▁record ▁ 2 6 8 ▁were ▁new com ers , ▁sur pass ing ▁ 2 0 0 8 ' s ▁ 2 2 6 ▁new com ers . ▁ ▁The ▁list ▁included ▁ 4 2 ▁female ▁new com ers . ▁One ▁hundred ▁people ▁listed ▁in ▁ 2 0 1 3 ▁failed ▁to ▁make ▁the ▁list . ▁ ▁The ▁number ▁of ▁women ▁on ▁the ▁list ▁rose ▁to ▁a ▁record ▁ 1 7 2 ▁in ▁ 2 0 1 4 , ▁up ▁from ▁ 1 3 8 ▁the ▁previous ▁year . ▁ ▁However , ▁only ▁ 1 2 ▁of ▁them ▁were ▁completely ▁self - made ▁without ▁the ▁help ▁of ▁parents ▁or ▁sp ouses . ▁ ▁Over