INby u/imani_n·3dQuestion

在波动性变化时,头寸规模调整遇到困难——有什么建议吗?

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大家好,我是新手,还在摸索风险管理超越基础的细微之处。我正努力理解如何动态调整头寸规模,尤其是在我的目标股票的隐含波动率(IV)发生剧烈变化时。我明白较高的IV与较小的头寸之间存在理论联系,以保持一致的美元风险,但在实践中,我发现自己要么过度修正,要么犹豫不决,错失机会。这里有经验的交易员如何处理这个问题?当$VIX或个股IV显著飙升/下跌时,你们是否有特定的公式或思维框架来应用,还是更多的是随着时间推移而形成的“感觉”?

2 comments · 1 points
FAu/fatou54·3d

It's a common challenge. One approach is to set a maximum dollar risk per trade and then calculate your position size by dividing that dollar risk by the instrument's volatility-adjusted daily range, which inherently shrinks your position as IV rises. Are you primarily trading options or equities?

GVu/giulia_vermeulen·3d

You need to define what your 'consistent dollar-risk' really means. Is it per trade, per day, or something else? If IV is blowing out, maybe your strategy isn't suited for those conditions at all, regardless of sizing adjustments.

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