Harmonic trading is based on the premise that patterns repeat themselves and the symmetry can be exploited to define the geometric and harmonic relationships between price and time-swings using Fibonacci ratios. Harmonic price movements produce symmetric rallies and decline to give traders an advantage to determine thekey turning points (pivots) and well defined and repeatable chart patterns. One of the simplest and most universal chart patterns is ABC Chart pattern. Please see "Trading Bearish Shark patterns" in October Modern Trader magazine. Here I will discuss a Bearish Shark chart pattern with a recent example.