Risk when investing is not volatility but rather a permanent loss of capital. I am looking a risk from the perspective of a value investor. To manage risk, you first have to identify the causes and then assess the likelihood and impact. Then you adopt a host of measures to mitigate them. From a value investor's perspective, the measures include adopting a conservative approach, having a margin of safety, and a long-term investment horizon. At times you have to be prepared to cut loss. The key is to focus on the downside and let the upside take care of itself