Taiwan stocks have turned more volatile as global technology shares undergo a sharp correction, and two listed companies known for active stock trading — CMC Magnetics Corp. (2323) and Huang Hsiang Construction Corp. (2545) — have become a fresh focus of market discussion.
CMC exits TSMC position and rotates into Nanya and Accton
CMC said in a material information filing released last night that it sold 175 lots of Taiwan Semiconductor Manufacturing Co. (2330) between July 21 and July 28, 2026. The average selling price was NT$2,327.30 per share, and the disposal resulted in a loss of NT$7.82 million.
The company then shifted the capital into two other names over the same period. It spent about NT$345 million to acquire 880 lots of memory maker Nanya Technology Corp. (2408) at an average price of about NT$392.59 per share, and about NT$310 million to buy 135 lots of networking company Accton Technology Corp. (2345) at an average price of about NT$2,298.08. CMC said the purpose of the transactions was to adjust its investment portfolio.
The moves quickly drew attention in local market circles. According to the article, by the time of publication TSMC was trading at NT$2,215, down 4.8% from CMC’s disposal price in this batch. Nanya was at NT$353.5, down 9.9% from CMC’s acquisition cost, while Accton was at NT$1,880, down 18% from its purchase price.
The report also said financial experts viewed CMC’s approach as a typical short-term rolling arbitrage strategy, meaning the latest realized loss should not be viewed in isolation. Earlier in July, CMC posted a NT$5.09 million profit from disposing of another batch of TSMC shares. In January this year, it also made NT$41.71 million from TSMC trades. In that reading, the latest loss reflected capital reallocation and stop-loss selling during a broader market correction.
For the two new holdings, the article said Accton’s fundamentals are supported by AI data center demand and that the stock may have stronger rebound potential, while Nanya is known for larger price swings. Whether the short-term switch proves effective remains to be seen.
Huang Hsiang’s Yageo purchase nears a NT$300 million paper loss
Huang Hsiang Construction’s trade has also come under scrutiny. The company has been active in Taiwan’s stock market in recent years and posted NT$1.03 billion in net profit from stock disposals in the first half of the year, earning it a reputation among some retail investors as a construction company acting like an investment adviser.
On July 1, Huang Hsiang disclosed that it bought 432 lots of passive component maker Yageo Corp. (2327) at an average price of NT$1,186.57 per share, a position worth NT$513 million. The article noted that the purchase date coincided with Yageo’s historic high-price zone, with the stock reaching an intraday high of NT$1,220 that day.
Yageo later fell sharply. On July 29, the stock closed limit-down at NT$507. If Huang Hsiang has not cut the position, the NT$513 million investment would have shrunk dramatically in roughly one month, implying a paper loss approaching NT$300 million. The report described it as one of the year’s most severe cases of a listed company being trapped in a losing stock position.