BBI (Bull and Bear Index) is an indicator aims on measuring the general short/mid-term (< 1 month) trend and sentiment of the stock/market. It used an average of 4 SMAs (3, 6, 12, 24) as a cut-off of a bullish/bearish trend. In general, YMMV, you can enter when close> BBI and exit when close<BBI.
BBI Bollinger Bands uses BBI as "basis" and calculates variations...