Example trading system
On this page you see a graph of an example trading system. You can build trading systems with many software packages.
The green boxes are positive trades. The red ones negative. The total profit of the system in this period was 4400 $.
As you can see the losses are small, but the profits are nice !

This system works with the ROC indicator. (Rate of change) and a trend. It is a trend following system.
Some trading systems can be very very profitable. One I use gives the follwing trading report.