SPECIMEN 007 / STRATEGY AUTOPSYCRYPTO · WALK-FORWARD · 2020–2026

Donchian / Turtle Breakout

The famous Turtle Traders system. Buy the 20-day high. It makes a fortune — and still can't quite beat doing nothing.

Breakout Spot · daily · Donchian(20/10) 10 coins · out-of-sample No edge · coin flip

01 The seduction

Buy when price breaks to a new 20-day high, exit on a 10-day low. This is the system that supposedly turned a group of novices into millionaires in the 1980s. Breakouts lead trends, trends lead profits — and on the big crypto moves it genuinely delivers.

Donchian / Turtle Breakout · BTC

+642%

$1,000 → $7,420 vs $7,771 holding

Beat buy & hold

6 / 10

a coin flip

Out-of-sample

7 / 10

held up in recent years

02 The one line that ends it

Donchian / Turtle Breakout vs. doing nothinglog scale

The strategyBuy & hold (doing nothing)

Donchian / Turtle Breakout beat holding on 6 of 10 majors — and 7 of 10 out-of-sample. Same money, same window, fees included — measured against simply buying Bitcoin once and never touching it.

03 The evidence

Coin	Trades	Win %	Strategy	Buy & hold	Verdict
BTC	51	41	+642%	+677%	lost
ETH	49	49	+1859%	+1237%	beat
BNB	48	35	+2292%	+2762%	lost
SOL	42	57	+23272%	+2768%	beat
XRP	42	43	+1216%	+365%	beat
LINK	55	35	+17%	+140%	lost
LTC	56	29	−63%	−36%	lost
DOGE	37	49	+5982%	+2139%	beat
ADA	46	37	+1686%	+173%	beat
AVAX	39	31	+1752%	+60%	beat

Long/flat spot, no leverage, next-bar fills, 0.06% fee per side. Beat holding on 6 of 10 coins — and on 7 of 10 in the recent out-of-sample period (the test that separates a real edge from a bull-market coincidence).

04 Verdict

So close to a survivor, and that's the interesting part. Biggest headline returns here, held up recently — but it still only beat holding on six coins out of ten, for a mountain of whipsaw trades. Most years it's buy-and-hold with extra steps.

Method — long/flat spot, next-bar execution (no look-ahead) · 0.06% fee both sides · each coin over its full Binance history from 2019 with indicator warm-up · benchmarked against buy-and-hold on the identical window · out-of-sample = the most recent ~45% of each coin's history. Reproducible.

The honest other side

This one earns real respect: the highest returns in the whole set, because when a monster trend shows up it's on it early and rides it. It even mostly held up out-of-sample. If you only care about catching the one move a cycle, it does that.

05 Your turn

Think yours is the exception?

Run your own strategy through this exact gauntlet — multi-year, out-of-sample, across bull and bear, fees included, benchmarked against doing nothing. You get the full report and the downloadable code.

$1.99per strategy
full report + code

Test my strategy → Coming soon

✓ The price is shown up front, right here. You will never build a test and then get hit with a paywall to see the result.