What news can cause a great movement in the night at usdchf and eurchf?
No news, except of some "fat fingers" and unexpected events, like earthquakes or terrorist attacks.
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Sergey Golubev, 2017.01.14 11:48
Weekly Outlook: 2017, January 15 - January 22 (based on the article)
The dollar was under pressure in a turbulent week that saw President-Elect Trump’s press conference. He will enter the White House in the upcoming week. In addition, we have speeches from Mark Carney and Janet Yellen, Inflation data in the UK and the US, Employment data in the UK and Australia and rate decisions in Canada and the euro-zone.
Besides, the price may have good movement (sudden movement especially for EUR/UCHF) at night because on the low liquidity for example, or for some other reason (political, and so on).