Bart Pattern

What is a Bart Pattern?

A Bart pattern is an informal crypto-chart formation named after the silhouette of Bart Simpson's head: a near-vertical rally, a flat sideways shelf, then a near-vertical drop that returns price roughly to where it started. The inverse Bart flips the sequence (sharp drop, flat shelf, sharp recovery). The name comes from Bitcoin's intraday charts, where the shape appeared often enough to become a meme, but the structure can show up in any thin market.

Mechanically it is a liquidity story rather than a trend story. The vertical legs are commonly attributed to large market orders, liquidation cascades, or stop runs hitting a thin order book, often outside peak hours; the flat shelf reflects the absence of organic follow-through once the forced flow stops. Read that way, a Bart is closer to a two-sided liquidity sweep than to a chart pattern with defined rules, and no standardized statistics exist for it.

How traders use it

• As a caution flag against chasing: a vertical leg followed by a dead-flat shelf suggests mechanical flow rather than trend, so momentum entries on the shelf are treated as low quality.
• As a mean-reversion frame: because the classic Bart resolves back to the pre-spike area, some traders fade the shelf toward the origin of the vertical leg, using the shelf's far edge as invalidation.
• As a liquidity read: noting which side's stops the vertical legs consumed helps judge whether the trading range that follows still has resting orders left to target.