One of the best things you can do if you have plenty of money and want to make serious money is master the games stock markets.
LCN Stock Market
Like in the real world the money making strategy in this stock market is buying low and selling high. If you do decide to dabble in the market you need to make sure you have a decent amount of time to commit to each round of investment. Shares take approximately 45 seconds to update. The LCN stock market is on only avaiabe on single-player mode and each LCN corporation on the market has a direct competitor where when one suffers the other gains and vice versa. The list below of the LCN corporate rivals will help you decide on what stocks to invest in.
Bilkington - Dollar Pills
Burgershot - Up-An-Atom
Clucking Bell - TacoBomb
Cool Beans - Bean Machine
ECola - Raine
FlyUS - AirEmu
GoPostal - PostOP
MazeBank - BankOfLiberty
Pisswasser - Logger
RadioLosSantos - WorldwideFM
Redwood - Debonaire
Slaughter, Slaughter & Slaughter - Bullhead
BAWSAQ Stock Market
The BAWSAQ stock market is pretty much the same as the single-player LCN stock market except its online and more volitile as actions and investments of every other player connected to the Rockstar Games Social Club affect this second stock market. If you are going to dabble in this market it is essential that you monitor community activity closely, and make use of the latest price information available via the Rockstar Games Social Club site.
Radio Stock
An easy way to get stock tips is to listen often to toalk back radion stations and then purchase the stock being discussed.