When
you combine risky assets together, the overall risk of the portfolio goes down — that's one of the main principles of diversification.
Without getting into the theory, let's look at a simple (but unrealistic) example of how
combining risky assets can lower the risk of a portfolio.
Portfolio theory suggests
combining risky assets with risk free assets, based on your risk tolerance.
Markowitz showed that by
combining risky assets that have less than perfect correlation, you can create a portfolio that has lower risk and a higher expected return than its individual components.
Not exact matches
If the
risky assets have a month - end
combined value less than the
combined initial allocations, we rebalance them to equal weights for next month.
We assume monthly portfolio reformation frictions of 2 % of month - end
combined values of
risky assets.
If the
risky assets have a
combined month - end value greater than the
combined initial allocations, we rebalance to the initial allocations and move the excess permanently (skim) to cash.
We assume monthly portfolio reformation frictions of 2 % of month - end
combined values of
risky assets.
Similar to high school chemistry, this piece discusses the concept of
combining two
risky asset classes, commodities and equities, to actually reduce overall portfolio volatility.
One measure that
combines risk and return is the Sharpe ratio, which describes how much excess return you receive for the extra volatility you endure by holding a
riskier asset — the higher the number, the more return you are getting for the risk.
Structured products promoted as having capital guarantee or capital protection typically
combine a «safe» and a «
risky»
asset into one product structure.
We then start to examine how diversification through
combining assets, in this case a simple stock and bond mix, works to mitigate the extreme drawdowns of
risky asset classes.