Systematic Risk - Systematic risk influences a large number of assets. A significant political event, for example, could affect several of the assets in your portfolio. It is virtually impossible to protect yourself against this type of risk.
Unsystematic Risk - Unsystematic risk is sometimes referred to as "specific risk". This kind of risk affects a very small number of assets. An example is news that affects a specific stock such as a sudden strike by employees. Diversification is the only way to protect yourself from unsystematic risk.
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ด้วยมาตรการที่แน่นอนเช่นทั่วไปที่ใช้ในสถิติRisk can be defined as a chance that the actual outcome from an investment will
differ from the expected outcome. The total risk of investments can be measured
with such common absolute measures used in statistics as variance and standard
deviation. Variance can be calculated as a potential deviation of each possible
investment rate of return from the expected rate of return. Standard deviation is
calculated as the square root of the variance. The more variable the possible
outcomes that can occur, the greater the risk.
Fundamental Risks
All strategies have risks. After all, you don ’ t get returns for taking on zero
risk. The key is to understand them and be sure they are worth taking.
Here are some key risks:
Investment risk’ is the variability of returns and the chance that your investment will return less than you expect, or your investment makes a loss leaving you with less capital than when you started, or your investment doesn’t even keep up with inflation meaning it is worth less over time.
‘Volatility’ is the relative rate at which the price of an investment moves up or down.
Generally, the higher the potential returns, the greater the risk. The smaller the potential risks, the lower the returns.
RISK/ RETURN TRADE-OFF
Successful investors understand the risk and return characteristics of their investments and their own ‘risk profile’. For more information about understanding your ‘risk profile’, click here.
Different investors will weight their portfolios in different ways, depending on their investment goals and ‘risk profile’. An investor who is aiming for capital growth over the long term, and who has the capacity to tolerate greater volatility and fluctuations in the value of their investments, may choose to include more higher risk/higher return investments than an investor who relies on their investments for a regular income. For example, shares in a speculative mining company may be quite volatile, with the share price moving considerably over a short period of time. On the other hand, residential property is usually less volatile, with property prices moving more gradually over a longer period of time.