Since the Riksbank started the program to hedge part of the currency reserve, the krona has strengthened 40 öre against the euro and 30 öre against the dollar.
The interest rate market is nervous, on Thursday the American interest rates first rose to new levels and then fell back slightly.
In Asia, the stock markets are mostly up on Friday.
In the morning, new figures for retail sales in Sweden will be available – there is nothing else to expect but a decline, according to most analysts.
There will also be European inflation figures.