Both were set up with the help of Korea Exchange (KRX), which runs the third-largest bourse in Asia.
Their success at Korea Exchange Bank may be an ominous precedent.
Between January and June, the operating profits of the ten accounted for more than 70% of the profits of all the companies listed on the Korea Exchange.
There are big plans for Russia, sub-Saharan Africa and South Korea, where HSBC is waiting for regulators to approve its 51% stake purchase in Korea Exchange Bank from Lone Star.
As The Economist went to press that was the choice facing HSBC, whose dogged pursuit of Korea Exchange Bank (KEB) has become a litmus test of South Korean attitudes to foreign investment.
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Kim Kyong Lim, chief executive of Korea Exchange Bank, the main lender to Hyundai, argues that this should be no problem, since the bank's sub-standard loans stood at less than 18% of its portfolio at the end of June.
As its own free-trade agreement with the U.S. grows less likely, with Seoul's ruling party willing to accommodate Kim Jong-il before George Bush, the country's prosecutors keep after private equity outfit Lone Star of the U.S. for its flipping of Korea Exchange Bank (KEB).
Last year, the State Department announced an agreement with Pyongyang for the delivery of food aid to North Korea in exchange for steps to contain its nuclear program.
The Korea Stock Exchange's only sanction against companies which fail to file earnings statements and other price-sensitive information on time is to suspend trading in the transgressor's shares for one day.
On February 29, the U.S. agreed to provide 240, 000 tons of food to North Korea in exchange for its promises to freeze missile tests and uranium enrichment, and to grant international inspectors access to its plutonium production facility at Yongbyon.
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Deutsche was also fined 1bn won over the alleged manipulation, the largest fine handed down by Korea's stock exchange.
That has led the administration to reject the idea of offering North Korea additional aid in exchange for new North Korean vows to abide by agreements it has repeatedly abrogated.
However, if the situation were framed solely as a dispute between the U.S. and North Korea, the focus would be shifted to what North Korea is demanding in exchange for nuclear disarmament.
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The Bank of China's suspension of business further complicates the ability of the Foreign Trade Bank, North Korea's main foreign exchange bank, to access a key financial market.
In exchange, North Korea agreed to stop running its smaller reactor and promised to allow the previously blocked international inspections, but only at some time in the future.
The US imposed sanctions on North Korea's main foreign exchange bank after the recent nuclear tests and had urged other countries, including China, to cut ties with the bank.
In response to overseas media reports that the Bank of China has closed the account of North Korea's main foreign exchange bank, Shi Yinhong, an international affairs expert at Beijing's Renmin University tells Hong Kong's South China Morning Post that Beijing is losing patience with Pyongyang.
The U.S. Treasury Department announced it had put sanctions on North Korea's primary foreign-exchange bank in response to Pyongyang's nuclear test last month.
By comparison to other exchanges in the U.S., Australia, Korea and Taiwan, the Hong Kong exchange appears a technological troglodyte.
But its heated rhetoric has raised concerns of a sudden escalation of conflict in the event of a small-scale incident such as exchange of fire with South Korea.
In a deal in September 2005, and in an accord to implement it in February 2007, North Korea agreed to end its nuclear programme in exchange for a basket of treats.
He said the administration made it clear that talks with Pyongyang about possibly giving food aid in exchange for a freeze in North Korea's enrichment activities and a move toward denuclearization could not advance if the leadership didn't keep its commitments.
South Korea, he points out, opened its first exchange in 1956, only three years after the Korean war.
The assertive U.S. response came in an intensifying exchange of threats and oaths with North Korea and as Russia and China appealed for calm.
Treasury Secretary Jacob Lew planned to raise issues including North Korea's nuclear program, China's exchange rate controls and cyberspying during his two day visit.
In exchange, they said, North Korea would be removed from the United States' list of state sponsors of terrorism and would have sanctions removed under the Trading with the Enemy Act.
In exchange for energy and financial assistance, North Korea last year agreed to shut down its Yongbyon nuclear reactor and declare the scope of its nuclear program.
Russia is currently negotiating a 40 year gas supply deal to South Korea (who recently began importing Russian oil) in exchange for technological modernization and investment of the type that Samsung offers.
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