FAILED

Harmonic Gartley (ratios, 15% tolerance)

Harmonic patterns have a higher win rate than the classic patterns, they give very precise entry conditions and a high reward-to-risk ratio. They work because Fibonacci retracements are used by many traders, and that visibility makes the reactions likelier.

Measured in crypto — Binance spot · 540 pairs, delisted ones included · 0.2% per round trip

Net per trade

−4.15%

after fees

The fee is charged on both legs: every trade pays to open and pays to close.

Died at

invariance

the result is not physically plausible

Worst drawdown

−90%

1,860 days underwater

How far the account fell below its own best previous moment.

Timeframe

1 day

The time grid this was measured on. The same technique on a coarser or finer grid is a different measurement, and can earn a different verdict.

invariance
costs
placebo
benchmark
out of sample
multiple testing

Equity curve

Risking 1.0% per trade, marked to market every day — not only when a trade closes. The line at 1.0 is the capital it started with.

At its worst the account was worth 90% less than its own best previous moment, and it spent 1,860 days below that peak.

The technique against chance

Same number of trades, same holding time, same assets — only the dates were drawn at random.

The average trade and the typical one

The mean sits above the median: the lottery signature — the typical trade loses and a rare handful pays for everything.

What was measured

We coded the rule exactly as it is described and let it trade on its own from 2017-08-17 to 2026-07-28. It found trades in 441 coins, 3,599 in total. Each one enters and exits at the price that existed on that day — the program never sees what comes next, which is the most common mistake people make testing strategies at home. Wherever the description was ambiguous we took the reading least favourable to the technique; whatever was left open is stated in the hypothesis, at the foot of this page.

How many of those trades actually count

Only 326 of the 3,599. Cryptocurrencies rise and fall almost in unison, so the same rule fires on dozens of coins on the same day — and that is one bet repeated, not dozens of different bets. Counting them all separately is the trick that makes a bad test look impressive.

What it paid, before any deductions

-3.95% per trade. Look at the sign: the average is already negative before any fee is taken out. The controls below still hold, but here they are not knocking down an edge — they are confirming there never was one.

Why it did not pass — it died here · where the result came from

We look at where the result came from: whether it is spread across the trades or packed into a handful of them. It concentrated. That is the shape of a lottery: the typical trade loses, and a rare handful pays for everything. Anyone following the rule for real would face a long run of losses before any gain, and would almost certainly quit before it arrived.

What would have happened to the money

Risking 1.0% of capital per trade — the most widely taught rule — across the whole period: The capital would have ended at 0.23× what it started with. At its worst the account was worth 90% less than its own best previous moment, and it spent 1,860 days below that peak. In 12 of the 12 paths tested, the account fell to less than half of what it started with.

What this result does NOT say

For an edge to be assertable here it would have to reach 4.54% per trade — that is the size that survives this archive's multiple-testing correction, and it rises as the archive grows. So FAILED means “we found nothing above that size”, and never “it cannot possibly work”. The instrument is far more sensitive than that: on synthetic data, with a clean effect, it separates from 0.69% upwards. The distance between the two numbers is the price of a real market and the price of publishing many claims. The difference matters, and it is the rule of this house: the card confronts the claim, never the person who made it.

What this card does not measure

Every verdict holds for the conditions it was measured under. These are this card's — and outside them the result does not apply.

One market, one universe: Measured on 441 spot cryptocurrency pairs, delisted ones included. It says nothing about futures, equities or indices, nor about how the same technique behaves in another market.
One window of time, not every window: The measured period runs from 2017-08-17 to 2026-07-28. A market moves through regimes, and a technique can work in one and fail in another — the card measures the regimes that fit inside this window, not the ones still to come.
One cost structure: The cost charged is 0.10% per leg, in and out. Anyone paying more than that gets a worse result, and anyone paying less gets a better one — the verdict holds for this fee.
One exit rule: The trade was closed by: stop or target, whichever comes first. The same entry measured with a different exit is a different strategy, and can earn a different verdict — it happens in this archive.
The number of trades is not the sample size: There are 3,599 trades, but only 326 independent market episodes: a single move fires the technique across dozens of assets at once, and counting those as separate observations inflates any result. It is the smaller number that governs the arithmetic. With 326 episodes, what the data supports is a range from -5.21% to -2.68% per trade — the published average is the centre of it, not the exact measurement.
Daily bars: Measured at the daily close. Nothing here measures what happens inside the day, and an intraday technique is not auditable with this data.

Numbers and reproducibility

The six controls

control	status	t	threshold	episodes
invariance	failed	—	—	—
costs	failed	-6.44	1.97	326
placebo	failed	-10.13	1.97	326
benchmark	failed	—	—	—
out of sample	failed	—	—	—
multiple testing	passed	—	—	—

invariance72% of the gross profit comes from 179 trades (5% of the total) — lottery
costsgross -3.945% · cost 0.200% · net -4.145% (t=-6.44)
placeboactual -4.145% · placebo +2.419% · excess -6.564% ± 0.648% (t=-10.13 against a threshold of 1.97, 326 real groups, 179,587 sham dates, draw error ±0.017%)
benchmarktechnique -4.15% · buy and hold (same horizon) +0.36% · excess -4.50%
out of sampleasset half A: -4.160% (t=-6.62, 271 episodes) · asset half B: -4.131% (t=-4.74, 284 episodes) · liquid half (>= US$ 2,240,681/day): -4.151% (t=-5.55, 288 episodes) · illiquid half: -4.139% (t=-5.02, 255 episodes) · period 1/4 (2017-11-14 a 2022-06-16): -4.462% (t=-3.21, 128 episodes) · period 2/4 (2022-06-17 a 2024-02-13): -2.790% (t=-3.34, 84 episodes) · period 3/4 (2024-02-14 a 2025-01-12): -4.440% (t=-3.12, 43 episodes) · period 4/4 (2025-01-13 a 2026-07-27): -4.888% (t=-5.84, 74 episodes)
multiple testing4 variation(s) tested · t=-6.44 across 326 episodes (equivalent to t=-6.41) · p≈0.0000 · false positives expected by chance ≈ 0.00

Equity — outside the six controls, and here is why

The t of the trade series is invariant to bet size: 0.5%, 1% and 3% agree to the sixth decimal. Nothing here moves the verdict — it moves what the account would have lived through.

risking 1.0% per trade: ×0.23
worst drawdown from the peak: −90%
days below the previous peak: 1,860
signals refused for lack of capital: 0%
paths where the account halved (out of 12): 12

Reproducibility

period: 2017-08-17 to 2026-07-28
assets that traded: 441
variations tested before this one: 4
gross per trade: −3.95%
net per trade: −4.15%
exit rule: stop or target, whichever comes first
median duration bars: 1
max duration bars: 565
intrabar ambiguity: 3.8
fee per leg: 0.001
episode days: 7
requires ratios: 1
fibonacci tolerance: 0.15
confirmation bars: 5
point D window: 60

Binance spot klines (delisted pairs included) · collected from 2026-07-27 23:31 to 2026-07-28 14:29 · 540 assets · 750,934 bars · 2017-08-17 to 2026-07-28

Seed not recorded: audits before 2026-07-29 used 20260728 by convention in the code, and the value is not in the record.

Hypothesis, filed before the result

Harmonic Gartley. The description does not close on its own arithmetic: the two routes to point D (the CD extension, and 78.6% of XA) disagree by 10.4% and 17.0% of the XA leg, and the BC=38.2% branch is IMPOSSIBLE — it would require CD=1.712, outside the canonical range. Point D was taken at 78.6% of XA, which the description itself calls the most important number. Four forms were tested to separate what the technique actually claims: with the ratios at 3% and at 15% tolerance, with no ratio at all (the zigzag alone), and with a single target in place of partial profit-taking.

filed on 2026-07-28, before the number existed

The original, as it was filed

Gartley harmônico. A descrição não fecha na aritmética: os dois caminhos até o ponto D (extensão de CD, e 78,6% de XA) discordam em 10,4% e 17,0% da perna XA, e o ramo BC=38,2% é IMPOSSÍVEL — exigiria CD=1,712, fora do intervalo canônico. Adotado o ponto D pelos 78,6% de XA, que a própria descrição chama de o número mais importante. Testadas quatro formas para separar o que a técnica alega: com as razões a 3% e a 15% de folga, sem razão nenhuma (só o ziguezague), e com alvo único no lugar da realização parcial.

Pre-registration exists to keep prediction apart from rationalisation: written after the number, every hypothesis is right.

Earlier audits of the same technique

Each variation an author teaches enters as its own test, so that whatever might work in the strategy gets covered. The verdict held in all of them.

2026-08-07FAILEDopen ↗
2026-08-03FAILEDopen ↗
this measurement →FAILED
2026-07-28FAILEDopen ↗