Huang Hsiang Construction (TPE:2545) disposed of 220,000 shares in Taiwan Semiconductor Manufacturing (TSMC) (TPE:2330) for NT$518.9 million.
Shares of Huang Hsiang Construction gained over 1% while those of TSMC also edged up 1% in Tuesday's midday trade.
The shares were sold between May 25 and June 1 at an average price of NT$2,358.67 per share.
The transaction generated a gain of NT$28.2 million, the filing said.
The disposal was carried out to improve capital utilization efficiency, the company said.