Moving average crossover (20/50)
The moving-average crossover identifies the trend's turn in time to get into it: buying the upward cross and selling the downward one captures the main move and keeps you off the wrong side of the market. You hold until the opposite cross.
Measured in forex — EUR/USD and GBP/USD · daily bars built from 15m · 1 pip spread (~0.009% per round trip) · no survivorship bias
- ✓invariance
- ✓costs
- ?placebo
- ✓benchmark
- ?out of sample
- ?multiple testing
At its worst the account was worth 0% less than its own best previous moment, and it spent 1,423 days below that peak.
What was measured
How many of those trades actually count
What it paid, before any deductions
Where it stalled · against randomly drawn dates
What would have happened to the money
What this result does NOT say
- One market, one universe
- Measured on 2 spot currency pairs. 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 2020-01-01 to 2026-06-26. 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 a 1.0 pip spread, crossed once. 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: the auditor's fixed horizon (10 bars). 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 88 trades, but only 66 independent market episodes: trades that overlap in time are not independent observations, and counting them as if they were inflates any result. It is the smaller number that governs the arithmetic. With 66 episodes, what the data supports is a range from -0.33% to +0.42% 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 | passed | — | — | — |
| costs | passed | 0.18 | 2.00 | 66 |
| placebo | inconclusive | 0.23 | 2.00 | 66 |
| benchmark | passed | — | — | — |
| out of sample | inconclusive | — | — | — |
| multiple testing | inconclusive | — | — | — |
- invariance88 signals across 4055 bars
- costsgross +0.042% · cost 0.008% · net +0.033% (t=0.18)
- placeboactual +0.033% · placebo -0.010% · excess +0.043% ± 0.190% (t=0.23 against a threshold of 2.00, 66 real groups, 4,400 sham dates, draw error ±0.020%)
- benchmarktechnique +0.03% · buy and hold (same horizon) +0.01% · excess +0.02%
- out of sampleasset half A: -0.039% (t=-0.17, 42 episodes) · asset half B: +0.105% (t=0.43, 43 episodes) · liquid half (>= US$ 0/day): +0.033% (t=0.18, 66 episodes) · period 1/4 (2020-03-10 a 2021-09-27): -0.468% (t=-1.15, 18 episodes) · period 2/4 (2021-10-29 a 2023-03-28): +0.278% (t=0.51, 15 episodes) · period 3/4 (2023-05-22 a 2024-08-21): -0.013% (t=-0.04, 15 episodes) · period 4/4 (2024-10-10 a 2026-05-29): +0.336% (t=1.69, 18 episodes)
- multiple testing1 variation(s) tested · t=0.18 across 66 episodes (equivalent to t=0.17) · p≈0.8620 · false positives expected by chance ≈ 0.86
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
- ×1.00
- worst drawdown from the peak
- −0%
- days below the previous peak
- 1,423
- signals refused for lack of capital
- 0%
- paths where the account halved (out of 12)
- 0
Reproducibility
- period
- 2020-01-01 to 2026-06-26
- assets that traded
- 2
- variations tested before this one
- 1
- gross per trade
- +0.04%
- net per trade
- +0.03%
- exit rule
- the auditor's fixed horizon (10 bars)
- horizon bars
- 10
- spread pips
- 1.0
- episode days
- 12
- seed
- 20260728
- fast average
- 20
- slow average
- 50
Twelve Data forex (15m aggregated to 1d) · collected on 2026-07-25 · 2 assets · 4,055 bars · 2020-01-01 to 2026-06-26
Hypothesis, filed before the result
**HYPOTHESIS NOT BLIND.** I ran this claim as a smoke test while building the forex loader and I SAW the result before writing this. The record is marked as such and must not be used as a tested prediction — it is here so that the card exists with the hypothesis that actually accompanies it, not so that I can score a hit. What was expected, and was confirmed: an effect indistinguishable from zero, and INCONCLUSIVE because the effect is small, not for lack of power. Context that informs this prediction, declared so that it can be assessed: (a) the corpus has 101 claims in crypto, 4 of them passed — all from the moving average crossover family; (b) the available forex universe is only 2 pairs (EUR/USD, GBP/USD) over 6.5 years, against 540 pairs and 9 years in crypto, which gives ~88 trades against ~8,600; (c) the cost of turnover in forex is ~20× lower (1 pip ≈ 0.009% against 0.2% commission), so control 2 stops being the main killer; (d) I ran ONE smoke test on the 20/50 crossover and saw the result — see the disclosure in its own hypothesis.
filed on 2026-07-29, before the number existed
The original, as it was filed
⚠️ **HIPÓTESE NÃO CEGA.** Rodei esta alegação como ensaio de fumaça ao construir o carregador de forex e VI o resultado antes de escrever isto. O registro fica marcado como tal e não deve ser usado como previsão testada — está aqui para que o card exista com a hipótese que de fato o acompanha, não para eu marcar um acerto. O que se esperava, e se confirmou: efeito indistinguível de zero, e INCONCLUSIVO por o efeito ser pequeno, não por falta de poder. Contexto que informa esta previsão, declarado para que ela seja avaliável: (a) o corpus tem 101 alegações em cripto, das quais 4 aprovadas — todas da família do cruzamento de médias; (b) o universo de forex disponível é de apenas 2 pares (EUR/USD, GBP/USD) em 6,5 anos, contra 540 pares e 9 anos em cripto, o que dá ~88 operações contra ~8.600; (c) o custo do giro em forex é ~20× menor (1 pip ≈ 0,009% contra 0,2% de comissão), então o controle 2 deixa de ser o principal matador; (d) ⚠️ rodei UM ensaio de fumaça no cruzamento 20/50 e vi o resultado — ver a divulgação na hipótese dele.
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.
- 2026-08-03INCONCLUSIVEopen ↗
- this measurement →INCONCLUSIVE