Bill Williams indicators
Alligator
Three smoothed averages (jaw, teeth and lips) shifted into the future: when they are tangled the "alligator sleeps" (no trend); when they fan out, it "eats" (trend).
Идея простыми словами
Markets trend only part of the time. The three lines, each slower and shifted further forward, help you see whether the market is resting or moving, and in which direction.
Как считается
Smoothed moving averages of the median price (high + low) ÷ 2: Jaw 13 periods shifted 8 candles, Teeth 8 shifted 5, Lips 5 shifted 3.
Jaw = SMMA(median, 13) shifted 8 forward (blue)
Teeth = SMMA(median, 8) shifted 5 forward (red)
Lips = SMMA(median, 5) shifted 3 forward (green)Как использовать
- Lines intertwined: no trend, wait.
- Lips above Teeth above Jaw, all rising and spreading: uptrend; the reverse order: downtrend.
- Exit or tighten stops when the lines start to converge again.
Выводы
- The wider the gap between the lines, the stronger the trend.
Пример
After a week of tangled lines on GBPUSD H4, the green line crosses above red and blue and the three fan out upward: the alligator wakes up hungry.
Цены в примерах приведены для иллюстрации.
На что обратить внимание
- The lines are slow; part of every trend is gone by the time they fan out.
Немного истории
Bill Williams, "Trading Chaos" (1995).
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