THE
Sceptic’s
Desk
AI Trading, Demystified
Prompt 16
Prompt 16 Improve Position size

Size a trade correctly

Works out the exact size so the loss at your stop equals the risk you chose, rather than the risk you felt like taking.

The prompt
Account £[X], 1% risk. [instrument] entry [E], stop [S]. Give the exact position size, show the steps.

Replace [X], [instrument], [E], and [S] with your own numbers.

Before you act on the answer
Check the arithmetic against the Position Size Calculator before you act on it. An AI can be confidently wrong about numbers.
Do I understand why? · Can I verify it? · What if it’s wrong?
If you can’t answer all three, you don’t act yet.