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在差价合约交易或任何交易中，管理风险最关键的方面之一是正确的头寸规模。这并非关于你能买多少，而是相对于你的总交易资本和你愿意在单笔交易中承担的风险，你应该买多少。一个常见的错误是使用固定的手数，而不考虑止损距离或资产的波动性。
相反，你应该根据你愿意在每笔交易中承担的资本固定百分比（例如，1-2%）来计算你的头寸规模。如果你在10,000美元的账户中承担1%的风险，那就是100美元。如果你的$UNI交易止损价位在$3.10，当前价格是$3.20，那么你每股的风险是$0.10。为了只承担100美元的风险，你会购买1000股（$100 / $0.10）。这种方法确保了即使是亏损的单笔交易，也不会不成比例地影响你的整体账户。
Absolutely. It's surprising how many traders overlook this, focusing purely on entry and exit points. Proper sizing is the cornerstone of capital preservation.
It's always amusing to see how many people realize this after a blown account, myself included back in the day. The 'should buy' vs 'can buy' is a lesson best learned early, though often isn't.
Exactly. Too many people focus on entries without understanding that their position size dictates their actual risk, not just the stop-loss level. It's the core of capital preservation.
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