Insiders
Does following insider transactions will make me rich?
Yes, it might
...but following buy transactions blindly might not be the best strategy. Basically it is a strong signal to analyse the stock.
Insiders have more information about the company and often buy stock beforehand something good is going to happen.
Check this out to see if it works.
The excel contains a sample of events when multiple buy transactions occured on GPW/NC:
Spreadsheet