It measures the success of the volatility ratio. It calculates the compensation gained for one unit of risk while investing in structured products or when making long-term investments in stocks.
The ratio uses the term beta to measure sensitivity against changes in the market. The one with a risk-free rate is the return given by a financial asset and short-term safe bonds are considered risk-free.
The term is used to measure volatility but it is the measure of asset class risk and it can be flawed as volatility cannot be equated to risk.
It cannot reflect the exact value of unpredictability as it works on several assumptions where the risks are assumed to be systematic.
However, the ratio provides a simple straightforward calculations where one can get a comparison or risk-reward rate. A higher Treynor Ratio is considered safer than lower one.