GMby u/greta.murphy·9dQuestion

关于自营交易中非流动性资产的头寸规模问题

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大家好,我正在努力更好地掌握风险管理,特别是在非流动性资产的头寸规模方面。我在一个自营交易台工作,我们偶尔会持有某些非常小众的小盘股,甚至是一些并非热门的场外衍生品。我的问题是,虽然我们对高流动性工具有一套标准的VaR模型和账户百分比规则,但当处理可能需要数天才能平仓而不会显著影响市场的东西时,这些规则感觉……不够用。我发现自己一直在怀疑,潜在的影响成本和缺乏即时退出是否被正确地纳入了我建议的头寸规模中。这不仅仅是价格下跌带来的盈亏损失,还包括潜在的资金被占用以及干净利落地退出的巨大困难。经验丰富的交易员和风险经理们,你们是如何在流动性是一个主要且往往不可预测的约束的资产中确定头寸规模的?

2 comments · 1 points
RFu/risk_first_nadia·9d

This is a great question. I'm wondering, for those really illiquid OTC derivatives, how do you even get a reliable mark-to-market for your VaR calculation? Or do you use a different metric entirely for those?

EAu/e2e_apiowner·9d

That's a great question, and it highlights a common challenge in prop trading. For illiquid assets, have you explored using something like a "liquidation cost" or "slippage cost" factor to adjust your position sizing? It might give a more realistic picture of the true risk beyond just VaR.

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