The OMXS index rose 0.1 percent at the close. That was notably more positive compared with stock exchanges in Europe, where London, Paris and Frankfurt all closed in the red. The same trend was seen on Wall Street, which began Thursday trading down.
The best performer among the major companies was Saab, which ended the day up 3.6 percent. Other index-heavy winners included Alfa Laval and Ericsson.
Handelsbanken was among the big losers, falling 2.4 percent after the Swedish Financial Supervisory Authority initiated a review of how the bank handles money-laundering risks.
Rusta's shares surged just over 12 percent after a strong quarterly report.
The trading day was volatile, moving from gains to losses before ending slightly higher. The market is concerned about Iranian attacks on targets in other countries in the Middle East and on civilian ships in the Persian Gulf.
The price of Brent oil is hovering near $100 per barrel after Iranian state television read a statement by the country's leader, Mojtaba Khamenei, in which he declared that the Strait of Hormuz will remain closed and that Iran will continue to attack targets in other countries around the Persian Gulf.
