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Time Under Water - Drawdown

by The trader, 3658 days ago
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The maximum drawdown is a popular measure of the maximum amount an investor can expect to lose. It is used as a measure of riskiness of a trading strategy.
Another measure of a trading strategy's riskiness is the Time under Water.
The Time under water is derived from the calculation of the drawdown. It is the maximum distance in time, from a previous peak to a new peak. In other words, it calculates how long it takes an investor to recover its money at the start of the maximum drawdown period.

Example:
1 January 2008, the equity value is: 100 - Current Time under water = 0 days
2 January 2008, the equity value is: 110 - Current Time under water = 0 days
3 January 2008, the equity value is: 90 - Current Time under water = 1 days
4 January 2008, the equity value is: 100 - Current Time under water = 2 days
5 January 2008, the equity value is: 115 - Current Time under water = 0 days

In the above example, the maximum 'time under water' value is 2 days.

The 'time under water' value is calculated for each symbol, and then the results are averaged. The average value is the final value returned by this metric.
The algorithm is rather simple, it calculates the drawdown for each new output and keeps track of the start and end date of each drawdown period. The difference in days is then calculated and the 'time under water' value is updated if the difference in days is higher than the 'time under water' value.


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Type: Rule Metrics

Object ID: 224


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Trading financial instruments, including foreign exchange on margin, carries a high level of risk and is not suitable for all investors. The high degree of leverage can work against you as well as for you. Before deciding to invest in financial instruments or foreign exchange you should carefully consider your investment objectives, level of experience, and risk appetite. The possibility exists that you could sustain a loss of some or all of your initial investment and therefore you should not invest money that you cannot afford to lose. You should be aware of all the risks associated with trading and seek advice from an independent financial advisor if you have any doubts.