At closing, the OMXS index had risen 1.5 percent.
The Stenbeck sphere's powerhouse, Kinnevik, rose 4.6 percent after the announcement that Helena Saxon - CFO of Investor - will take over as CEO in August.
The hope for a peace settlement between the US and Iran, which could normalize shipping through the Strait of Hormuz, characterized trade despite continued conflicting signals.
The price of crude oil and natural gas fell significantly; at 5:30 p.m., a barrel of North Sea oil was trading at just over $97.
The OMXS index has risen 6.6 percent since the turn of the year.
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