Backtest Evidence Review

A second read of your backtest — before you trust the curve.

You send one strategy (trade-results spreadsheet or CSV export + rules). I send back a short report on whether the evidence holds up: costs, out-of-sample design you document, null or permutation tests you provide (I assess them — I do not run new ones), sample size. Not whether to trade it.

Independent · Spain · 3 founding slots left

€79 one backtest · report in 2 business days after complete submission and accepted files

I assess whether the tests and evidence you provide support the result. I do not rerun the strategy, generate new statistical tests, optimize it, or certify profitability.

Get the review — €79

Not sure it fits? Ask first

Ask first opens a fit-check email draft — not a purchase. Stripe-hosted checkout. After I verify payment, I email intake + a private Proton Drive folder for uploads.

A worked example — including a failed result

I run a personal research lab where I pre-register hypotheses before testing them. Six experiments so far (H001–H006). None passed my own gates for live capital — including H001, which looked fine on simulated out-of-sample profit until the pre-registered null test (documented in the lab report) and trade-count gate failed.

H001 verdict: insufficient evidence (simulated PnL +113.92 on 1,000 start, null test FAIL, 13 trades < 15 required)

Out-of-sample trades:
13
Simulated PnL (1,000 start):
113.92
Null test (documented):
FAIL (113.9 < 95th percentile threshold 455.5)
Sample gate:
FAIL (13 < 15 min trades)

Read the full public H001 sample report →

What I need from you

One strategy. A trade-results spreadsheet or CSV export. Written rules and cost assumptions. Optional: a superficial review of up to 200 lines, without running the code.

Optional use case: a platform/data migration evidence check — same strategy and same window, up to two trade-log exports you provide (for example MT4, MT5, or cTrader); no native platform integration.

No API keys. No “make this profitable” requests. No signals.

What you get back

Limits, file sizes, data handling →

How it works

  1. Buy — Stripe-hosted checkout (Service Terms and Privacy Policy accepted there).
  2. Intake — I email a form link and a temporary upload folder after payment is verified.
  3. Report — within 2 business days of complete submission and accepted files.

Who I am

Xavier Gisbert Blanquer — independent methodology reviewer, Spain. I pre-register hypotheses and walk-forward splits in my own lab work; in client reviews I assess the out-of-sample design and null tests you document — I do not rerun strategies or generate new statistical tests during the review. The H001 sample above is one of six lab runs — all failed those gates.

This is methodology feedback on materials you provide. Not investment advice. Past backtests do not predict future results. You remain responsible for trading and compliance decisions. Legal · Privacy · Terms