At the 14.30 ride on Monday, the broad OMX index is down 0.3 percent.
On the large company list, it is the pharmaceutical company Astra Zeneca that performs best, up 1 percent after positive messages from the USA regarding the cancer medicine Imfinzi.
The defense company Saab's share declines 3.0 percent and has company in the red territory of H&M which declines 1.9 percent and Telia which is down 1.8 percent.
Other leading exchanges in Europe have also turned downward after starting on weak plus.
The customs agreement that the EU and the USA entered into on Sunday means import duties of 15 percent on goods from the EU, including cars. The union commits itself at the same time to invest in and buy energy from the USA for thousands of billions of kronor.
The agreement seems to fall in favor of American investors and futures trading points to a plus opening on the USA exchanges. The electric car manufacturer Tesla takes the lead in the negotiations and the share is up 1.8 percent.
