SPECIMEN 003 / STRATEGY AUTOPSYCRYPTO · WALK-FORWARD · 2020–2026

RSI Oversold Bounce

Buy when it's oversold, sell when it's overbought. The first strategy everyone tries. On crypto it gets taken apart.

Mean reversion Spot · daily · RSI(14) 10 coins · out-of-sample Failed walk-forward

01 The seduction

RSI under 30 is “oversold,” over 70 is “overbought” — so you buy the dip and sell the rip. It's the first indicator in every tutorial, and on a chart that's chopping sideways it genuinely looks like free money. High win rate, too, which is exactly what makes it so easy to believe.

RSI Oversold Bounce · BTC

+85%

$1,000 → $1,854 vs $7,626 holding

Beat buy & hold

3 / 10

almost never

Out-of-sample

4 / 10

faded out-of-sample

02 The one line that ends it

RSI Oversold Bounce vs. doing nothinglog scale

The strategyBuy & hold (doing nothing)

RSI Oversold Bounce beat holding on 3 of 10 majors — and 4 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	11	73	+85%	+663%	lost
ETH	9	67	+95%	+1356%	lost
BNB	8	62	+106%	+2914%	lost
SOL	7	43	−81%	+2911%	lost
XRP	11	73	+556%	+364%	beat
LINK	9	67	+359%	+174%	beat
LTC	9	56	+155%	−28%	beat
DOGE	12	67	+119%	+2140%	lost
ADA	12	67	+17%	+174%	lost
AVAX	7	43	−84%	+49%	lost

Long/flat spot, no leverage, next-bar fills, 0.06% fee per side. Beat holding on 3 of 10 coins — and on 4 of 10 in the recent out-of-sample period (the test that separates a real edge from a bull-market coincidence).

04 Verdict

It won two thirds of its trades and still got crushed. That's the whole lesson: win rate isn't profit. On an asset that trends, “buy oversold” just means catch the knife, over and over, while the thing you sold keeps running without you.

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

Look at the win rate before you write it off — around two thirds. That's the trap, not the edge. You win small and often, then one “oversold” coin keeps bleeding and you hold it all the way down. A high hit-rate that still loses to holding is the most seductive way to lose money there is.

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.

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full report + code

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