Awesome Oscillator (AO): Momentum Trading Simplified

The Awesome Oscillator (AO) is a non-bounded momentum indicator created by Bill Williams. It measures market momentum by calculating the difference between a 5-period and a 34-period SMA of the Median Price (High + Low / 2).

Unlike RSI or Stochastics, AO does not have overbought/oversold levels. Instead, it is a visual histogram where green bars indicate rising momentum and red bars indicate falling momentum. It is effectively a faster and smoother version of the MACD histogram.

Bill Williams defined three specific entry signals for the Awesome Oscillator:

1. The Saucer: A trend-following setup. In a bullish market, you look for two red bars followed by a green bar. This identifies a momentum pullback that has successfully reversed back up.
2. Twin Peaks: A divergence strategy. When the market makes two bearish peaks below the zero line, but the second peak is higher than the first, it's a powerful signal that the trend is exhausted.
3. Zero-Line Cross: The simplest crossover strategy. When the AO crosses from negative to positive, bullish momentum is beginning; positive to negative indicates a bearish shift.

The 'Hidden' power of the AO is in spotting divergence. If the price reaches a Higher High, but the AO histogram shows a Lower High, it's a strong indicator that the trend lacks 'volume energy' and is likely to reverse.

Because AO is calculated on median price, it is often more sensitive to these reversals than standard oscillators that only look at the Close price.

To avoid false signals, Bill Williams recommends only taking AO entries that align with the trend shown by the Alligator indicator. If the AO gives a buy signal but the Alligator's mouth is closed, it's a 'trap'. You should only trade AO signals when the Alligator has woken up and is feeding.