V-Bottoms

Core idea

A V-bottom is the chart's shortest reversal: a steep, near-vertical drop of at least 15% (30% average) that bottoms and reverses with equal velocity. Bulkowski's automated criteria require the recovery to retrace at least 38.2% of the plunge before the pattern can be called a V-bottom; that 38.2% retrace also serves as the breakout. The whole formation typically lasts three weeks to two months.

Bulkowski identified V-bottoms in 969 stocks and ranked the pattern fifth out of twenty for bear-market upward-breakout performance — an exceptional standing for any bullish setup in a hostile regime. The trade is the snap recovery: price tops out quickly (10 weeks bull, 6 weeks bear), throwbacks happen about half the time, and gains correlate strongly with pattern height and width.

Bulkowski's framing: Most traders find V-bottoms uninvestable because there is no consolidation to wait for. The 38.2% retrace is what makes the pattern tradeable — it converts a plunge-and-snap into a setup with a definable entry and a stop just below the V's low.

Why it matters

V-bottoms exist where panic ends and accumulation begins. The plunge is sellers liquidating into an unwilling market; the snap-back is buyers stepping in once forced selling exhausts. Unlike rounded bottoms or triple bottoms, there is no extended base — the reversal happens fast, the buyers are committed, and the trader who waits for "confirmation" via a longer base typically misses the move.

Why the 38.2% retrace matters

Without a rule, a V-bottom is just a plunge that might recover. Bulkowski's 38.2% retrace requirement (the standard Fibonacci threshold) provides a falsifiable entry: until price has recovered 38.2% of the AB plunge, the pattern is not a V-bottom and is not actionable. The retrace level is also empirically meaningful — it is the line at which "sellers exhausted, buyers committed" stops being a hope and becomes a measurable fact.

Why tall and wide outperforms

Pattern height (the plunge depth) and width (start to breakout) both predict performance, and the combination is multiplicative. Tall + wide V-bottoms can show almost double the returns of short + narrow ones. The mechanism is straightforward: a deeper plunge means more capitulated sellers and more demand starved during the drop; a wider plunge gives buyers more time to size in before the breakout completes.

Key takeaways

Mental model

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Practical application

Example

A semiconductor stock has been consolidating in the $58-$65 range for three months. On a sector-wide guidance shock, it gaps down to $55 and continues falling for the next 18 trading days in a near-straight line to $45.60 — a 30% drop from the $65 pre-plunge high. After three days of basing at $45, the stock turns up sharply on accelerating volume.

The trader computes the 38.2% retrace: $45.60 + 0.382 × ($65 − $45.60) = $53.01. A buy-stop is placed at $53.10 with a stop-loss at $45.10 (below the V-low). Eight days after the V-low, the stock breaks $53.10 and the position fills. Eleven days later, the stock pulls back to $53.30 — a textbook throwback that grazes but does not breach the breakout line. The trader holds.

Five weeks after entry, the stock reaches $63.40 — a 19% gain, falling slightly short of the original $65 high but well above the breakout. The trader books partial gains at $63 and trails the rest with a stop at the most recent swing low. Three weeks later the trail stops out at $61.20.

What made this trade work was respecting the breakout rule. Buying anywhere between $46 and $53 felt better intuitively (closer to the V-low, more upside) but had no statistical edge — the pattern is not a V-bottom until the 38.2% retrace completes. The trader who buys "near the bottom" is taking on the entire failure risk of the plunge continuing, which is non-trivial: half of attempted V-bottoms never retrace 38.2% in the first place and end up as continuation plunges instead.

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