Pipe Bottoms

Core idea

A pipe bottom is two adjacent, unusually long downward price spikes on the weekly chart, plunging well below the surrounding weeks. The two spikes overlap heavily and look like two parallel railroad spurs pointing down. The week immediately after the second spike must rally back near the spike tops — that recovery is what creates the V-shaped silhouette that gives the pattern its name.

For such a simple shape, the pipe bottom punches far above its weight. In bull markets, the average rise is 54% over about six months, with an 8% breakeven failure rate. Nearly 35% of bull-market pipes return more than 50%. Bulkowski considers it one of the highest-return bullish reversals in the entire book — astonishing for a two-bar pattern.

Bulkowski's framing: I conducted an in-depth study of pipe bottoms on daily price charts and was disappointed. Failure rate of 18%, average gain only 33%. I discarded the research and looked at the weekly chart — and there the pipe bottom transforms. Use weekly, always.

Why it matters

Pipe bottoms are the answer to "where does a downtrend actually end?" Most reversal patterns ask you to wait for a rounding base or a triple bottom to develop over months. The pipe bottom signals the turn in two weeks. For bottom-fishers, that compressed timing is invaluable; for trend traders, the pipe bottom is the cleanest possible entry into the reversal.

Why the weekly scale is non-negotiable

The same two-spike shape on a daily chart fails 18% of the time and averages only 33% returns. On the weekly chart, the failure rate halves and the average rise jumps to 54%. The difference is measurement: the weekly time frame filters noise, gives the post-pipe recovery a full week to confirm, and keeps the search for the ultimate high running long enough to capture the full reversal arc.

Volume tells you which pipes will work

The most reliable pipe bottoms show above-average volume on both spike weeks — usually highest on the left spike, still elevated on the right. Pipes with below-average left-spike volume and above-average right-spike volume tend to fail (the asymmetry suggests sellers were still active at the lows, not exhausted). Volume is not a hard rule but it is the single best filter.

Key takeaways

Mental model

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Practical application

Example

A specialty-chemical mid-cap declines from $48 to $22 over nine months in a slow, channeled downtrend. The broader sector is rolling over and earnings have missed for two consecutive quarters.

The next week, the stock opens at $22 and plunges to $17 intraweek before closing at $19 — a long downward spike on volume 2.3 times the 13-week average. The following week opens at $19, drops to $16.80, and closes at $18.50 — another long spike, overlapping the first, on volume nearly equal to the first spike's. Both spike weeks dwarf the surrounding bars in length.

The third week opens at $18.50, rallies to $22.40, and closes at $22.10 — back near the top of both spikes. The V shape is now visible on the weekly chart. A trader watching this setup notes the two-bar pipe and sets a buy-stop at $22.60, one tick above the highest high of the two spike weeks.

Two weeks later, the stock closes at $23.40 on weekly volume well above average — confirmation. The buy-stop fills at $22.60. Stop placed at $16.50, $0.30 below the pipe low. Risk per share: $6.10.

Over the next seven months, the stock rallies in choppy steps to $34, $32, $36, finally peaking at $38 — a 68% gain from the entry, slightly above the 54% bull-market median. At one point in month four, the stock retraces to $24.50 and tests the area just above the pipe-recovery week's close, then bounces — a typical post-pipe support retest that does not trigger the stop.

The trader scales out one-third at $30, another third at $34, and trails the remainder with a 20-week-low stop that ultimately exits the runner at $35.40 when the trend rolls over. Blended exit: ~$33.10 against $16.50 stop — about $10.50 per share gained on $6.10 of risk, or 1.7-to-1 — modest reward-to-risk on entry, but the high success rate of confirmed pipe bottoms makes the math work over many trades.

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