That will be the smartest idea to lose all your money at once. How you will come to know about when that ponzi company will go scam??
Put your money in investment plans or trade BTC or altcoins.
Only way to find out when is a company running away your funds is to be the owner himself. I'm pretty sure that ponz sites have scammed too much people that some people have adopted the method. The victims of a ponzi has become a ponzi monster himself. Simply doing a research how a ponzi is running will make you understand it right away. People are easily deceived and most people likes manipulating other people. Thus, ponzi owners are not just earning money from scamming but also having tremendous fun doing it.
Many people are also selling ponzi site templates, bitcoin doubler scripts, and even fake transaction logs auto-generator.