The Sharpe Ratio is one of the most commonly used indicators on the foreign exchange (Forex) market, which can be used to determine the effectiveness of both an individual trading strategy and an investment portfolio.
Sharpe Ratio Formula
The universal evaluation of Forex trading strategies is considered to be the ratio of the income from trading operations conducted within the strategy and the risks taken by the trader within the same strategy. The Sharpe Ratio expresses this relationship, so the higher it is, the more effective the applied Forex strategy.
The Sharpe Ratio is calculated using the following formula:
At first glance, the formula seems quite complex, but in practice, it is much simpler and clearer. The numerator of the formula contains the average trading profit over a certain period. It should be noted that the total income from risk-free assets (bank deposits, etc.) is not taken into account during the calculation.
The denominator contains the risk indicator, which is the average deviation from the average return. Risk is directly dependent on the volatility of the financial instrument.
In the end, after performing the division, we get the Sharpe Ratio. If the ratio is below zero, it indicates that the effectiveness of the asset is extremely low.
If the Sharpe Ratio exceeds the value of 1, it is considered a positive efficiency indicator. However, the formula’s author recommends taking a value around 2 as optimal. It should be noted that such assets are very rare on the market.
Evaluating Forex Strategies
When calculating the Sharpe Ratio for a Forex strategy, the risk-free income is automatically excluded, due to its absence.
We take information about the results of trading operations from the “Report” tab of the MetaTrader 4 trading terminal. We need the average return in percentage terms relative to the initial deposit for the required analysis period.
Next, we determine the risk level, which we take as the average volatility of the currency pair or another financial instrument. The average volatility of a specific instrument can be found through any online service or volatility calculator.
We divide the return indicator by the risk indicator, and we get the Sharpe Ratio.
The Sharpe Ratio is convenient to use when comparing the effectiveness of two Forex systems. If both strategies have the same profitability, but the risk indicator is higher for the first strategy, then the Sharpe Ratio for the first strategy will be lower, indicating its lower effectiveness compared to the second strategy.
Considerations in Evaluating PAMM Account Effectiveness
The Sharpe Ratio can also be used to compare the effectiveness of PAMM accounts. However, it should be noted that there is a certain difficulty here: usually, profitable managers trade portfolios and do not particularly share information about their composition. Nevertheless, the effectiveness of a PAMM account manager can be calculated when copying trades, since the user sees all the tools used. In addition, some PAMM services already provide the Sharpe Ratio of their managers.
Disadvantages of the Sharpe Ratio
The Sharpe Ratio has also had certain disadvantages. For example, if transactions are made with low frequency but have a high level of income, the Sharpe Ratio will be low. The reason for this is the high average volatility of such income.
Examples are shown in the figures. The first and second strategies have different profitability, and the Sharpe Ratio differs significantly.
In conclusion, it can be said that the Sharpe Ratio, despite its apparent complexity, is a practical measure of the effectiveness of Forex strategies and financial assets, which gives any trader the opportunity to compare their trading system with any other.
For practical experience investing in PAMM accounts, you can read this article:
Investing in PAMM accounts in practice: creating a portfolio of $500
FAQ
What is the Sharpe Ratio?
The Sharpe Ratio is a measure of risk-adjusted return that helps traders evaluate the performance of their strategies by considering both returns and risk.
How is the Sharpe Ratio calculated?
The Sharpe Ratio is calculated by subtracting the risk-free rate from the portfolio’s return and dividing the result by the portfolio’s standard deviation.
Why is the Sharpe Ratio important for Forex traders?
The Sharpe Ratio allows Forex traders to assess the effectiveness of their strategies by accounting for the risk involved, helping them make informed decisions about their investments.
