Shortly after 1 pm, the broad index is traded at minus 1.3 percent.
The development looks similar on leading exchanges in Europe. Also, the futures on Wall Street are falling, since the exchanges in New York were closed on Monday.
On the OMXS30 index, the only company that is traded on plus is the pharmaceutical company Astra Zeneca, which rises by 0.6 percent.
At the bottom is the online casino company Evolution, which falls by 4.5 percent. The construction company Skanska is down 2.3 percent and the truck manufacturer Volvo is falling 2.2 percent.
On Tuesday, Klarna announced that the company will be listed on the New York Stock Exchange at a valuation of up to 128 billion kronor. The date for the listing has not yet been specified.
