Looking through the Stock Market pinned discussion, I notice that there is a great dearth of information here. You can head over to GTAMarket for the best info and help regarding the stock market feature of GTAV. Hopefully this will help you with your most immediate questions.
I will try to make sure that the best info we have is uploaded here for your convenience.
Important Links:
Homepage
Our Mod Post with FAQ/Info
List of Rival Stocks
GTA Billionaire Checklist
LCN Strategy
Bawsaq External Stock Tracker
