Downside risk
Risk of the actual return being below the expected return / From Wikipedia, the free encyclopedia
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Downside risk is the financial risk associated with losses. That is, it is the risk of the actual return being below the expected return, or the uncertainty about the magnitude of that difference.[1][2]
Risk measures typically quantify the downside risk, whereas the standard deviation (an example of a deviation risk measure) measures both the upside and downside risk. Specifically, downside risk can be measured either with downside beta or by measuring lower semi-deviation.[3]:ā3ā The statistic below-target semi-deviation or simply target semi-deviation (TSV) has become the industry standard.[4]