It calculates the Bulls Power at every rise and the Bears Power at every fall. It's better to approximate this index with the help of moving average. It's worth purchasing when the forces fall below zero (become minus) - when the indicator increases tendency; The force index demonstrates the going on of the increasing tendency when it increases to the new high; The signal to sell occurs if the index becomes positive during the decreasing tendency; The force index demonstrates the Bears Power and going on of the decreasing tendency if the index falls to the new bottom.
