Most traders trading just one currency at the time and also intraday.
Another way to reduce risk is to try to take advantage when correlated currencies are not in balance.
We all know to trade the EUR/USD and USD/CHF in the same direction, so buy both or sell both, because one is quoted in USD while the other is quoted in CHF, so the diffence is EUR/CHF.
All three exchange rates, EUR/USD, USD/CHF and EUR/CHF are connected to each other, for example 1 EUR is 1.3000 USD = SFR 1.4800 (EUR/CHF) so the balance is zero.
Sometimes the three are not in balance like on the chart below with daily prices: top chart is EUR/USD, the 2e is USD/CHF and the 3e is EUR/CHF.
At the bottom of the chart you see that theoretical the balance must be zero, but in practise it is not and moving above or below one.
Try the following formula: EUR/USD x USD/CHF x (1/EUR/CHF).
The outcome is normally zero, but in realtime the bottom of the chart is realtime balance calculation moving above and below one.
In practise, when the Balance is below 1 you sell EUR/CHF and buy both EUR/USD and USD/CHF v.v.
