On the large company list OMXS30, ball bearing giant SKF and heat pump manufacturer Nibe were found at the top with gains of 3.9 and 2.6 percent, respectively.
At the bottom of the index was the major bank Nordea, which fell 3.3 percent after presenting an updated strategy.
Cloud services company Sinch's report plunged 19.2 percent after net sales were slightly below expectations.
The candy company Cloetta, in turn, lost 2.2 percent on its report.
Storskogen rose 14.3 percent after reporting better sales and profits than analysts had expected.
The leading European stock exchanges were also in the red when the Stockholm Stock Exchange closed, with the London Stock Exchange clearly up.
Asian stock markets saw broad declines after Wall Street closed lower on Tuesday. AI companies were the biggest losers, with the tech-heavy Nasdaq index falling as much as 2 percent.
In early trading on Wednesday, prices in New York instead pointed upwards in a slight recovery.
The market's concerns stem from the high company valuations in the AI sector, where companies benefit each other in a kind of circular economy.
As expected, the Riksbank left the key interest rate in Sweden unchanged on Wednesday morning.
