Cloudbanks

Core idea

A cloudbank is a long-duration pattern visible only on the monthly chart: price spends years drifting sideways within a horizontal band (the "cloud"), then plunges 40%+ in a bear market or company-specific shock, then — over years — climbs back to the base of the cloud and sometimes through it. The pattern is for investors, not swing traders. Bulkowski says it's one of his favorites because the average rise from the lowest low to the cloud base is 386%, though that's a perfect-trade number that few real entries will capture.

The cloud base is interpreted as the stock's "normal" price, and the plunge as an anomaly that markets eventually correct. The big bet: history says the stock returns to the cloud 86% of the time, and 64% of those eventually break above the cloud top.

Why the format is different

Cloudbanks don't get a performance rank in this book. Rank is calculated on the daily scale; cloudbanks live on the monthly scale. Comparing them to daily-scale patterns would be apples to oranges. Performance metrics are also unusual: rise is measured from the lowest low to either the bottom of the cloud or end-of-data, capped at the cloud base.

Why it matters

Cloudbanks reframe what a "pattern" is. The setups elsewhere in this book resolve in weeks or months; a cloudbank resolves in 1.7 years on average to the cloud base, then another 2.8 years to traverse the cloud. This is the only pattern in the encyclopedia where the appropriate time-frame is patient capital and the appropriate position size is one you can forget about.

It also names a recurring risk: structural decline disguised as a bear-market drop. Toys-"R"-Us, GameStop, and Stamps.com all printed cloudbank-shaped bottoms while the underlying business was deteriorating beyond recovery. The pattern doesn't help you tell those apart from a market-driven plunge — you need a fundamental check before committing.

Key takeaways

Mental model

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Practical application

Hunting cloudbanks

Timing the entry

Example

Imagine a regional bank stock that traded between $40 and $48 from 2003 to 2008 (5 years of horizontal action — the cloudbank). In late 2008, the financial crisis takes price to $14 by March 2009 — a 70% drop, comfortably over the 40% threshold.

A patient investor waits. The first monthly close above the 4-month SMA prints in August 2009 at $19. They buy at the September open at $20.50, knowing the stock could still drop 50% from here. Position size: 2% of portfolio (since a 50% drawdown caps loss at 1% of portfolio).

Over the next 22 months, price climbs back to $40 (the cloud base). The investor sells at $39, capturing a 90% gain. The stock then chops between $36 and $42 for two more years before finally breaking out above $48 in 2013. The investor sat that out; the 90% gain in 22 months was the easy money.

If the bank had been a structurally declining business instead (e.g., subprime-only lender that couldn't pivot), the recovery never comes — the stock drifts from $14 to $8 over five years and delists. This is why a fundamental check before entry is mandatory: the chart alone can't tell you whether you're looking at AIG or American Express.

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