I have never used Invesvest Boxing on yobit and in general bypassed this exchange. But a month ago I bought AGR coins and already managed to increase the amount of investment 3 times. I think that this is a decent bonus system. And like the stock exchange is normal.
I have been using this opportunity for a long time. New coins when they come give good bonuses in Invest Box. You can earn very good interest in the end.