Shark Pattern — what it is and how to use it in trading
Definition
The Shark pattern is a harmonic figure with an extended B-C leg and a deep return of price toward the point-X zone at point D — structurally different from the classic Gartley/Bat/Butterfly/Crab scheme.
How it works in the builder
shark_bullish/shark_bearish use left/right/tolerance parameters — the same confirmation logic, but with its own set of ratios for the B-C leg and the return at point D.
What it looks like on the chart
The extended B-C leg stands out clearly on the chart compared with the other harmonics — it's longer than a Gartley's or Bat's, giving the figure a more asymmetric shape.
Typical use
Point D is a potential entry zone against the direction of the B-C leg, similar to the other harmonics — usually with an extra higher-timeframe trend filter.
Common pitfalls
Because of its non-classic structure, a Shark is easier to mistake for a plain impulsive move with no completed figure — it matters to wait for the builder's actual point-D confirmation rather than eyeballing the shape mid-move.
This block is available in the strategy builder
137 no-code blocks — build an entry condition with this term and test it on history
Historical results do not guarantee future ones. The service is an informational and analytical tool, not an individual investment recommendation; trades are not executed.