But why? Both Swiss Franc as well as US Dollar are sleeping currencies currently. And the pure lack of liquidity right now as explanation is not convincing, as the rest of the market did not show any typ of reaction. So it is a unusual reaction of CHF alone.
Market Makers hitting stops to get good price to buy the Francs. CADCHF and NZDCHF are good examples of broken rising channels on the daily chart, that happened last week, so they're buying more. Traders dont only need news to buy, they also take advantage of low liquidity