The force index is an indicator that can be further refined, according to whether a trader wishes to adopt a short-term or a longer-term perspective. The two-day EMA of force index mentioned above supports a whole host of additional trading rules that offer precise trend indicators for exact trading situations.
On an intermediate basis, a 13-day EMA of force index can point to the likelihood of sustained rallies or longer-term market declines, thereby generating trading rules for longer-term decision making.