The Xbox One and PlayStation 4 build of Grand Theft Auto V got a monster one gigabyte update which, alongside improving the games overall online stability, fixed a vast array of bugs, be they minor or major, as well as fixing an absolutely massive exploit which allowed players to make $2.1 Billion in online GTA currency in a matter of minutes.
Since then, a user of the “se7ensins” forum that goes by the name of DatGews has discovered an all new way to exploit the single player portion of the games stock market. Though, DatGews does warn about this cheat. “BE CAREFUL and save often. When you click sell all make sure it says you will profit. The stock market is still very ****ed up and you can lose all your money or get trillions due to messed up calculations.
Do not buy more than 2.147B total Shares of any stock. Sometimes if you invest too much, stocks disappear from portfolio leaving you with nothing. SAVE OFTEN”.
So how do you do it? Well, it’s really rather simple and would probably see you arrested in the real world.
1. Find a stock on LCN with the biggest difference between High and Low value
2. Select Online character, accept message, and spam B/O to go back to GTA V
3. Repeat #2 until the stock value is close to the Low value
4. Invest all at Low value
5. Repeat #2 until stock is close to High value (or good enough to sell)
6. Sell all at High value
7. Repeat from #3
[Source]