The Test Bench › famous_system

Does The '50% Profit Management' Rule actually work?

MYTH

A famous idea that does not survive an honest test.

The claim

Close winning option trades at 50% profit and your returns improve — OptionAlpha-style options sellers

What we did

Tested against Buy & hold SPY / honest reconstruction.

The result

Result: Same ~93% win rate as holding, but expectancy ~$12/trade WORSE on real bid/ask

Same ~93% win rate as holding, but expectancy ~$12/trade WORSE on real bid/ask

Verdict

The 'higher win rate' is real and totally beside the point. Closing early pays a four-legged exit spread every time, caps your winners, and keeps your losers. The win-rate lift is a mirage.

What the test did and did not do

net of real costs
point-in-time data
checked for look-ahead
tested out of sample

Almost nobody publishing a backtest says which of these they did. We list the ones we failed as well as the ones we passed.

Tested 2026-06-23. The same treatment, applied to every other system, is on the test bench.

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Written with AI assistance from our own test database. The numbers are computed, not composed.
General market commentary for education, not personalised investment advice. Backtested results are hypothetical. Trading carries a real risk of loss.