Kospi
In short
The KOSPI is the main stock market index for South Korea, tracking the performance of all common stocks traded on the Korea Exchange.
In plain words
It acts like a scoreboard for the South Korean economy. When the KOSPI goes up, it generally means the biggest companies in the country are doing well.
A simple example
If major companies like Samsung Electronics see their share prices rise significantly, the KOSPI index value will increase.
Why it matters
Investors use it to judge the health of the South Korean market. It is a key indicator for global traders looking at Asian economic trends.
Easy to mix up
Do not confuse it with the KOSDAQ, which is a separate index for smaller, high-growth companies.