The number of stock-rich shareholders on the country's secondary stock market, the KOSDAQ, surged this year on the back of a bullish run by the tech-laden bourse, data from a corporate tracker showed Sunday.

According to Chaebul.com, there were 64 stockholders who have portfolios worth more than 100 billion won ($92.5 million) as of Friday, the highest-ever figure on record.

That compares with 46 stock-rich shareholders on the KOSDAQ market earlier this year.

Most of the stock-rich were major shareholders and owners of IT firms.

Kim Beom-su, founder of Daum Kakao Corp., the operator of South Korea's top mobile messenger, was the richest shareholder on the KOSDAQ market with stock holdings valued at 1.44 trillion won, followed by Kim Sang-hun, chairman of Dongsuh Corp., with 669 billion won, and Kim Suk-soo, chairman of Dongsuh Food Corp., with 653 billion won.

The KOSDAQ market has been on a sharp climb this year, fueled by strong offshore buying.

The KOSDAQ index closed at 706.90 points on Friday, marking the highest closing in more than seven years. The Friday closing price compared with 546.01 points on Jan. 2. (Yonhap)