Demand for risky assets such as stocks has increased as the market's hopes grow for more American tariff agreements – including with the EU.
Among the heavy winners in the broad rise are the major bank Nordea and the pharmaceutical company Astra Zeneca, which rose 2.1 and 2.0 percent, respectively.
Nine of the 30 most traded stocks in the OMXS30 list fell. It went worst for the defense group Saab and the mining company Boliden, which fell 1.6 and 1.5 percent, respectively.
During the night to Thursday, the leading Asian stock exchanges also went up.
At the close in Stockholm, the stock exchanges in Frankfurt and London had risen, while Paris fell back. Two out of three major indexes on Wall Street are also in the plus.
The European Central Bank (ECB) left the key interest rates unchanged, as expected, in Thursday's decision and keeps the door open for cuts further ahead – which both analysts and the market expect to come in September.
At the same time, the tariff negotiations between the EU and the US are entering a final phase ahead of US President Donald Trump's deadline on August 1.
The krona has strengthened as risk appetite on the market has increased. The dollar was below 9.50 kronor in morning trading, but has recovered and is trading for 9.51 kronor. The euro costs 11.20 kronor.
The Stockholm stock exchange's OMXS index rose 1.8 percent on Wednesday and has risen 3.3 percent since the turn of the year.
