Day Trader’s Aftermarket Lounge 14 Sep 2020, page-29

So i have a penny stock portfolio, whenever it gets above a certain amount or I think a rocket is done I sell off and transfer the extra money into my blue chip folio. Let's say the amount I keep to play with is around 20k. That is 20k of money I don't really mind losing, I would prefer to keep it and to double it but I wont starve or lose the house if it is gone. What percentage of that would you put on a Knifey? Just generally speaking.