Chart patterns and candlestick setups
Does a capitulation candle signal a reversal?
Rejected Pre-registered and tested, July 2026
Adding each condition made the result monotonically worse. The complete pattern was the worst version of all.
What the pattern claims
A classic Wyckoff idea, usually called stopping volume or a climax followed by a secondary test. A red bar at least four times the size of recent bars marks panic selling. Then immediately a second red bar, smaller, on higher volume — the same selling pressure now failing to move the price, because buyers are absorbing it. You buy the second close.
How we tested it
2,201 occurrences on S&P 500 companies, 2010–2026.
Every study here was pre-registered: the exact rule, the pass and fail thresholds and the data window were written down and cryptographically fingerprinted before the test was run. That makes it impossible to move the goalposts after seeing the answer.
Results assume you buy at the next morning's open, not at the closing price that triggered the signal, and they include companies that were later delisted or went bust. Returns are measured against what the rest of the market did on the same days, so a rule that made money only because it fired on days everything rose scores zero here.
What happened
−1.11% at 60 days, and negative in every era we split it into: −1.09% in the first, −1.22% in the second. Consistently bad rather than noisily bad.
The clause ordering runs the wrong way from top to bottom. Doing nothing returned −0.34%. Dropping the giant-bar requirement, −0.32%. Dropping the second-red requirement, −0.82%. Dropping the volume requirement, −0.84%. Buying the shock bar alone, −0.86%. The complete pattern, with everything satisfied: −1.11%, the worst arm measured, and 0.77 percentage points behind simply doing nothing.
What it means
Waiting for the second candle — the confirmation, the secondary test, the part that makes the setup feel disciplined — cost 0.25 percentage points against just buying the first shock bar.
That is worth sitting with. The confirmation step is not decoration that costs you a slightly worse entry price. It is actively negative: it systematically selects the cases that go on to do worse.
This is the same conclusion the breakout-and-retest study reached by a completely different route, and it is why we now start any 'wait for confirmation' proposal from the assumption that it will cost money until shown otherwise.
A rejection is not "this never works"
It means: tested on this universe, over this period, against a bar written down in advance, it did not clear the bar. Where a test lacked the power to decide either way we record it as undecided rather than rejected. The full research ledger has all 192 experiments and what the failures have in common.
Other patterns we tested
- Does the bull flag pattern work? The pole is the only live part of the pattern. Every flag condition made the result worse.
- Does MACD divergence work? The loose version changed the outcome by less than one hundredth of a percent. The strict version widened both tails.
- Does breakout and retest work? The setups the rule throws away outperformed the ones it keeps.
- Does buying the dip after a spike work? The first pattern in this family to lose money significantly rather than merely do nothing.
- Does a big RSI drop mark a buying opportunity? The family's only statistically significant result, and it vanished completely once we accounted for when it fired.
- Do three shrinking red candles signal a bottom? The only chart pattern that beat all its own control groups — and it still could not clear the error bars.