KOSDAQ

On a stock exchange, people buy and sell shares in companies, so-called stocks. South Korea has two major platforms for this kind of trading. One is called KOSPI and brings together the old heavyweights like Samsung Electronics or Hyundai. The other is called KOSDAQ and is designed for smaller, younger companies. Listed there are mainly firms from technology, medicine, and software—companies that want to grow quickly and need investors' money to do so. The KOSDAQ was founded in 1996 modeled on the US technology exchange Nasdaq, and the name is a direct nod to that.

Korea’s showcase for young tech firms

A young company often has a good idea but little money. Through the stock exchange, it can raise this money: it sells shares in itself and in return receives capital for labs, machinery, or staff. For many Korean companies, the KOSDAQ is the first stop on this path. The requirements are lower than on the larger KOSPI, where a company must already have demonstrated high profits for years.

For investors, the KOSDAQ is therefore both interesting and risky. Anyone who invests early in a small chip company can win big if it grows into a global corporation. But just as often, such companies disappear from the market again. Prices on the KOSDAQ therefore fluctuate more strongly than on most major exchanges.

Economically, the market also has a signaling function. South Korea relies heavily on exporting semiconductors, the computing chips found in phones, cars, and servers. If the KOSDAQ rises significantly, it often points to a worldwide surge in demand for technology. If it falls, that’s an early warning sign for the entire industry.

How the index level is calculated

When the news reports that the KOSDAQ rose by two percent, it doesn’t mean the exchange as a building. It refers to a metric, a so-called index. It combines the prices of all companies listed there into a single number. This way, you can see at a glance whether the market as a whole is doing well or poorly.

Not all companies count equally, though. What matters is a company’s market capitalization, meaning share price multiplied by the number of shares. A large biotech company therefore moves the index noticeably, while a tiny supplier barely does. The starting point is July 1, 1996; back then the index level was set at 1000 points. All later values are comparisons to this starting point.

The market is operated by the Korea Exchange, the national stock exchange company. It examines which companies are admitted, and also removes companies if they violate rules or become insolvent. It’s important to distinguish it from the Nasdaq in the US: both are tech-heavy, but they are completely separate markets with different companies. Another common misconception is that the KOSDAQ is Korea’s small secondary exchange. In fact, well over 1500 companies are listed there, significantly more than on the KOSPI.

The KOSDAQ in market reports

You’re most likely to encounter the term in business news early in the morning. Because South Korea is in a different time zone, the KOSDAQ closes before European exchanges properly open. Reports like “Asian markets down, KOSDAQ loses 1.8 percent” are therefore often the first sentiment check of the day for technology stocks.

The index also shows up in AI news. Many suppliers that manufacture memory chips, camera modules, or equipment for chip factories are listed on the KOSDAQ. When a major American corporation announces new data centers for artificial intelligence, their share prices often rise the next day.

As a reader, it’s enough to understand the KOSDAQ as a thermometer. It doesn’t measure the global economy, but rather investor sentiment toward Korean growth companies. Anyone who wants to properly interpret the number should always look at the KOSPI alongside it. If both move in the same direction, there’s a general underlying cause. If only the KOSDAQ goes off the rails, it’s usually due to the technology sector itself.