The Wallenberg sphere's venture-capital company EQT is among the index-heavy winners, up 3.3 percent.
Strong gains on Wall Street on Friday have injected a new dose of risk appetite among investors. In Tokyo, the market rejoiced over a convincing election victory for Prime Minister Sanae Takaichi, lifting the Tokyo Stock Exchange by almost 4 percent.
Precious metals continue to recover after a turbulent week in the wake of President Donald Trump's nomination of Kevin Warsh as the new head of the US Federal Reserve. Gold prices rose 1.4 percent, returning above $5,000 an ounce (31.1 grams) for the first time in February.
The OMXS index has risen 5 percent since the turn of the year.
