On the large-company index OMXS30, Saab and Boliden were at the top, rising 4.2 and 4.6 percent respectively. At the bottom was H&M, which lost 2.3 percent after a sell signal from DNB Carnegie.
Hotel chain Scandic's shares plunged over 8 percent after fourth-quarter revenue came in below expectations.
Positive sentiment also dominated Europe, with the London, Paris and Frankfurt stock exchanges all rising.
The Tokyo Stock Exchange also closed higher, while the Chinese stock markets remain closed for the New Year celebration. Wall Street opened Wednesday trading with clear gains.
The Swedish krona weakened slightly against both the US dollar and the euro on Tuesday. On Wednesday, one dollar costs 9 kronor while the euro is trading at 10.62 kronor.
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