The OMXS index had climbed to 191.7 points after just a few minutes of trading, with investment bank Carnegie spearheading the rise.
After a torrid few days, Carnegie began its recovery on Tuesday with a 17 percent leap on the back of Monday’s five billion kronor ($609 million) loan guarantee from the Riksbank.
The Stockholm bourse’s upward trend was in line with movements on the US markets.
The Dow Jones industrial index closed on Monday up 11 percent, the second biggest single day increase since the 1930s.
The Nasdaq Composite index finished the day 9.5 percent higher than it started.