U.S. dollar and Swiss Franc cross. Trading the USD/CHF currency pair is also known as trading the "Swissie". The Swiss franc is the only franc left in Europe after the rest joined the euro. It is often seen as a safe haven currency. In times of uncertainty, the franc usually stays stable or appreciates against its European counterparts. The USD/CHF tends to have a negative correlation with the EUR/USD and GBP/USD currency pairs. This is due to the positive correlation of the euro, Swiss franc and the British pound.