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Taiwan Market Shift: Unimicron Outpaces TSMC in Trading Value as Silicon Photonics Stocks Surge
Electronic Technology · Electronic Components · economic_daily · 2026-09-01
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Taiwan stocks rallied on the first day of September as capital rotated into PCB and silicon photonics sectors, with Unimicron's trading volume doubling TSMC's.
What Happened
Market Capital Rotation: The Taiwan stock market saw a strong rebound on the first day of September, with the weighted index surging over 820 points. Trading volume remained robust at over 1 trillion TWD, signaling a shift in investor focus away from heavyweights like TSMC toward other electronic sectors.
Unimicron Dominates Trading: Unimicron recorded a staggering 85.18 billion TWD in trading value, surpassing TSMC by more than double. This massive liquidity highlights a significant concentration of capital within the PCB and substrate industry, marking a key trend in the current market session.
Silicon Photonics Momentum: Win Semiconductors hit the daily limit, driven by optimism surrounding silicon photonics and potential benefits from US restrictions on Chinese fiber optic transceivers. The stock's high turnover rate and trading value made it a standout performer, attracting significant short-term speculative interest.
ETF and Sector Activity: ETF activity remained exceptionally high, with leveraged and active funds dominating the top volume lists as investors sought to amplify their market exposure. The broader market breadth expanded as capital flowed into PCBs, silicon photonics, and memory stocks, indicating a more diversified investment landscape.