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如果有人告诉你
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他做交易胜率80%
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你是不是觉得这个人是个高手
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我再告诉你一个数据
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某券商2023年做过一次内部统计
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抽样了10万个散户账户
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发现胜率最高的一批人
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平均胜率接近85%
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但这批人里面账户是盈利的不到三成
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同一个数据库里
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胜率最低的一批轮平均胜率只有34%
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但这批轮里面账户盈利的比例超过了一半
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85%
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胜率的人在亏钱
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34%胜率的人在赚钱
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这个反差值得我们花几分钟重新想想
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胜率这个东西
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问题出在哪
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胜率只告诉你一件事
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就是你对了多少事
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但他没有告诉你另外一件事
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你对的那次赚了多少
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错的那次又亏了多少
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这就是盈亏比
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胜率是分子
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盈亏比是分母
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只看分子
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不看分母
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这个分数长什么样
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其实你并不知道
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我举一个具体的例子
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2024年有一次票叫丰奥威
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走了一波很标准的趋势
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假设有两个人都在这个票上做交易
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第一个人胜率很高
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每次涨三个点就跑
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做了五次
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对了四次
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每次赚三个点加起来12个点
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但那是错的
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他扛了15个点
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再割四次
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对赚12个点
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一次错亏15个点
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净亏三个点
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胜率80%
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第二个人胜率很低
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同样的武士交易只对了两次
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错了三次
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但他每次对着那笔不拿刀
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15个点不走
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每次错的那笔亏三个点就砍了两次
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对赚30个点
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三次错亏九个点
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净赚20一个点
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胜率40
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同一支票
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同一段时间两个人站在同一个起跑线上
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最后的结果跟胜率成反比
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所以我才说胜率是交易里最容易被高估的数字
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不是它没用
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是单独拿出来用方向就很容易跑偏
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为什么会跑偏
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因为我们从小到大
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考试的逻辑就是正确率越高越好
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一张卷子对了90%
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你就是好学生
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这套标准跟了我们很多年
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进了市场以后
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很容易不自觉地把它搬过来
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每一笔都想做对
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每一次亏损都觉得是自己搞砸了
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然后慢慢就形成一个习惯
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对了就跑
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错了就扛
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对了就跑
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是在给盈利盖天花板
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错了就扛
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是在给亏损拆地板
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天花板封死地板
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撬开时间拉长
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胜率再高
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账户也很难好
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看起来
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那问题来了
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胜率这么不重要
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为什么所有人都在聊他
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因为他好懂
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你今天做了三笔交易
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两笔红了
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马上觉得自己状态好
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连着亏了五次
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马上怀疑自己是不是不行了
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胜率给的是即时反馈
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盈亏比给的是延迟反馈
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你可能要做三个月才能看到一条平滑的曲线
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慢慢往上走
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人天然喜欢
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既是反馈
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也是反馈
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是需要训练才能感知的东西
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胜率这个数字更像是给大脑喂的甜味剂
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盈亏比才是正餐
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零食吃多了
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正餐就吃不下了
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那怎么用盈亏比来带队胜率做决策
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其实不用搞什么复杂的计算
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每一笔交易之前就问自己一句话
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这笔单子对了能赚多少
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错了会亏多少
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这两个数字之间的比例能不能到二比一以上
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什么叫二比一以上
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就是你做对一次赚的钱
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或你做错两次
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盈亏比二比一的时候
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你只需要33%的胜率就能保本
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三比一的时候只需要25%的胜率
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四比一的时候只需要20%
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这个表不用死记
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你只需要记住那个感觉
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盈亏比越高
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允许你错的次数就越多
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你想想这意味着什么
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只要你严格把盈亏比控在二比一以上
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三笔交易你对一笔就够了
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三比对一比
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在任何市场里
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只要你稍微有点判断力
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它都不是一个很难的事
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你之前觉得难
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可能是因为心里那根弦绷得太紧了
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老要求自己三笔对
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两笔以上那个要求不是市场给你的
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是你自己给自己加的
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讲到这里
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你心里一定在问你一个问题
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胜率低到有三成多
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连着亏五六次
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心态会崩
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这个问题问的特别对
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他才是真正拦住大多数人的那大佬
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看我给你算一下
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假设你的系统盈亏比三比一
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胜率33%
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连续亏损六次的概率有多大
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但是亏损概率67%
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连续六次就是0.67的六次方
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大概是9%
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也就是说你每做11轮交易周期
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就会撞上这么一次
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连亏六次
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这不是谁的能力有问题
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也不是系统突然不灵了
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他就是一个概率上的必然
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你如果做100笔交易
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这种连亏六次的情况会出现九次
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它就是概率的正常波动
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跟你有没有天赋
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努不努力没有关系
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但大多数人遇到一次连跪六次就停下了
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换方法了
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开始怀疑自己
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然后用新方法再遇到连亏四次又停下
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一直在换
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从来没有等到概率回到正常区间的那一天
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这就是为什么同一个系统
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有的人能赚钱
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有的人赚不到
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差别可能不在系统本身
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是谁愿意给概率一点时间
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所以你不用把胜率当成成绩单
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胜率是你交易系统爬完之后吐出来的一个结果
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不是你拿来衡量自己行不行的尺子
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真正该定的数字就两个
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盈亏比和亏损上限
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剩下的一切让概率自己去跑
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下次有人跟你说
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他胜率很高
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你只需要问他一句
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你的盈亏比是多少
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如果他答不上来
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你就知道你俩不在同一个调整层面上了