The Korea Exchange stated that ten of the nation's biggest businesses rose 60 percent compared to 2008.
Leading the way is Samsung Electronics they posted a net profit of 9.8 trillion won in 2009, this is up 80 percent from the 5.5 trillion won earned last year.
Posco is the world's fourth largest steelmaker with an estimated net profit of 3.3 trillion is ranked second by FnGuide. Hyundai Motors got a net profit of 2 trillion won.
According to FnGuide there are six new companies expected to join the 1 trillion club. LG Electronics, Kia Motors, Hyundai Steel and SK Energy.
Hyundai Motor's showed the largest growth of 175 percent, followed by LG with 70 percent and Samsung with 62.3 percent.
This is due the fact that Korea weathered out of the storm quite well compared to their foreign counter parts. With the combined value of Korea's top 10 profit earning companies they scored approximately 60 percent compared to 2008.