USD/CHF is among the four major currency pairs traded in the global forex market, and is also known as the 'Swissy'. It is an interesting pair to trade as it pits the most traded currency globally, the US dollar, against the Swiss Franc, which holds its own weight in the global forex market as Switzerland boasts of nearly one-third of the world's private wealth in its banks.Like most forex pairs, the exchange rate of USD/CHF is affected by economic data and central bank decisions. Key economic data points that move this pair include employment rate, GDP and inflation. In addition, changes to the monetary policy by the Federal Reserve and the Swiss National Bank (SNB) also affect the value of the US dollar and the Swiss franc.But more importantly, this currency pair makes quick moves in the event of economic and political instability around the world. This is because the CHF is considered a safe haven currency which traders turn to in times of uncertainty in global financial markets.In terms of volatility, price movements and technical characteristics, the Swiss franc is very similar to the Pound Sterling for trading. Hence, keenly observing movements in GBP/USD can help traders understand trends in USD/CHF as well.