Rachel2019-12-23 16:11:13
Rachel老师，请问最后一段greater liquidity是否也可以reduce market impact?课件里老师讲market impact是影响price，是不是market impcat就是price impact? 而execution risk是market risk，也是price risk？market impact和execution risk这两种risk是不是都可以同时用greater liquidity来reduce吗？
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Chris Lan2019-12-24 17:57:46
Chris Lan同学你好
流动性更好，说明变现更容易，所以价格的影响会更小。
以下是标准定义，但我觉得和你说的意思是差不多的。
Market impact is the adverse price impact in a security caused from trading an order and can represent one of the largest costs in trading.
Execution risk is the adverse price impact resulting from a change in the fundamental value of the security and is often proxied by price volatility.
流动性好，这两个风险都可以降低
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