| Period | Asset - A | Asset - B | 50:50 mix of A &B |
|---|
| Year 1 (Return) | -50% | -2% | -26% |
| Year 2 (Return) | +80% | +5% | +43% |
| Year 3 (Return) | +40% | +15% | +28% |
| Aggregate 3 years | +26% | +18% | +34% |
- Asset A: high return, high volatility
- Asset B: lower return, lower volatility
- 50:50 portfolio: balanced risk and enhanced return
As the table shows,
Asset A’s higher return comes with significant volatility, including potential losses of up to 50% of the initial investment.
Asset B, meanwhile, offers a lower total return but reduced volatility.
Combining Asset A and Asset B in a
50:50 mix, however, achieves a portfolio return of 34% over three years. So how does this happen?
1.
Reduced loss: incorporating a lower-risk instrument reduces losses. While
Asset A fell 50% at the end of the first year, the 50:50 portfolio was only down 26%. The greater the loss, the more challenging it is for the portfolio to recover.
2.
Lower correlations: although
Asset A and
Asset B move in the same general direction, the degree of change differs. For instance, A has a higher return in the second year, whereas B excels in year three.
3.
Rebalancing: the mixed portfolio in the example above rebalances its allocation to maintain a 50:50 ratio at the end of each year. So at the end of the first year, when
Asset A underperformed relative to
Asset B, the owner sold portions of
Asset B and purchased more of Asset A. That positioned the portfolio to benefit from
Asset A’s recovery the following year.