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Position sizing is arithmetic, not vibes

This story is from 2026-10-26. It is preserved in the archive; the latest stories are on the live feed.

Most trade plans I see fail before the entry is even discussed. Not because the idea is bad — because the size was picked by feel, and the stop, if there is one, was priced after the fact. Position sizing is the one part of trading that is pure arithmetic. It deserves to be done like arithmetic. Th…

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  1. 2026-10-26 13:32 · DEV Community — AI
    Position sizing is arithmetic, not vibes

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