Hanwha M&S (Hanwha Machinery & Service Holdings) saw its share price rise sharply on the 12th. During the day's trading, the stock climbed 1,380 won to reach 7,460 won, a gain of 22.7%. In the morning, while trading in the 7,000-won range, it showed an increase of more than 20%, making the day's price movement particularly notable.

On the same day, news also emerged of Kim Dong-sun's expanded stake. According to the information provided, Kim Dong-sun invested 128.5 billion won to increase his stake in Hanwha M&S to 24.81%. This stake expansion is noteworthy in that it raised Kim Dong-sun's ownership ratio.

However, the current figures are based on intraday trading, so the extent of the gain and trading prices may change.

[This article was written based on the provided market data and stake expansion details and does not constitute investment advice. Stock prices may fluctuate, and investment decisions and any resulting responsibility rest with the investor. This article was written with the assistance of AI.]