Koreans' transactions involving Chinese stocks plunged to $510,000 this year through June 21 from $4.14 million a year earlier, the Korea Securities Depository said Friday.

China's stock market was pummeled early this year by growing concerns about its slowing economy. After suffering heavy losses from their investments in Chinese shares, Korea's retail investors have withdrawn some of their assets parked there to avoid further losses. 

Korean investors poured a total of $4.29 million into Chinese stocks as of the end of June 2015 as they sought to take advantage of the Shanghai-Hong Kong Stock Connect. The figure sharply jumped from $2.2 million a year earlier, the KSD data said.

The stock connect has allowed investors in China and Hong Kong to buy and sell stocks on each other's exchanges since late 2014. (Yonhap)