What we have generally seen today has been investors remaining firmly on the front foot, hunting risky asset classes, such as the heavyweight miners and energy firms.

A higher ratio suggests a better riskadjusted performance, while a lower one means you could be better off with a less risky asset.

The difference between these two returns can be interpreted as a measure of the excess expected return on the risky asset.

The incentive in finance comes in the form of higher expected returns after buying a risky asset.

Recent market turmoil has pushed gilt yields to record lows, as investors pile into less risky assets.