This is the 14069th most frequent Turkish word.
milyarderlerinin
"Of the billionaires" (possessive/plural form).
Here, 'milyarderlerinin' is used in possessive form referring to the billionaires of the world.
Dünyanın milyarderlerinin serveti her geçen gün artıyor.
The wealth of the world's billionaires is increasing every day.
In this sentence, 'milyarderlerinin' is used to specify that the sections describe lives belonging to billionaires.
Kitapta milyarderlerinin ilginç yaşamlarını anlatan bölümler var.
The book contains chapters describing the fascinating lives of billionaires.
Here, 'milyarderlerinin' is used to indicate the investment strategies that pertain to the billionaires.