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Position Sizing
Risk Management
どういう意味か
Deciding how many shares or contracts to trade based on how much you are willing to lose, not on how confident you feel.
例
With a $10,000 account, 1% risk ($100), a $100 entry, and a $95 stop ($5 risk per share), you buy 20 shares. The size comes from the risk, not from "I think it will win."
初心者がよくやるミス
Beginners size positions by gut: "buy 1,000 shares because I am sure." Sizing by confidence, not by risk, is how one bad trade wipes out months of gains.
関連用語
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- 1% Rule — A simple risk rule: never risk more than 1% of your total account on a single trade. It ke…