The decline was broad, with 28 of the 30 largest companies closing in the red. Heat pump maker Nibe was the worst performer, down 2.4 percent. Clothing giant H&M also fell sharply, losing 1.9 percent.
Skanska and Epiroc bucked the trend, rising 2.1 and 0.5 percent, respectively.
The sour market mood followed Thursday's stock market crash in the US - the worst since April 2025.
The Stockholm Stock Exchange fell after the OMXS index briefly reached a record high on Thursday.
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