Executive Summary
The TAIEX declined about 3.05% over the four trading days of the week ending July 9, 2026. The benchmark opened the period by touching a fresh record high near 47,571 before reversing sharply lower. Profit-taking accelerated after the peak, with notable single-day drops including a 1.3% decline to 47,101 and a session that saw losses exceed 1,000 points. The market remained closed on July 10 owing to Typhoon Bavi, leaving the net weekly move negative.
Weekly Drivers
- Heavy foreign institutional selling totaled NT$165.43 billion across July 6-9, including a single-day outflow of NT$93.8 billion.
- Profit-taking followed the index's record high early in the week amid elevated valuations in technology shares.
- Broad selling pressure concentrated in the electronics and semiconductor sectors.
- Typhoon Bavi led to full market closure on July 10, shortening the trading week.
Sectors & Breadth
Technology and electronics sectors led the declines as investors rotated out of high-flying names that had driven prior gains. Financial and insurance names showed relative resilience in some sessions. Market breadth narrowed during the selloff, with the bulk of losses concentrated in a handful of large-cap tech constituents rather than across the broader index.
What to Watch
- Resumption of trading and any follow-through from the typhoon-related closure.
- Foreign investor positioning and net flows in the coming sessions.
- Global semiconductor demand signals and U.S. tech earnings updates.
- Domestic economic data releases and any policy commentary from Taiwanese authorities.
Capital-Flow Context
Foreign investors were net sellers throughout the shortened week, contributing to the downward pressure on the index. The scale of outflows highlighted sensitivity to valuation concerns after the recent rally. Domestic institutional and retail flows provided limited offset amid the tech-led retreat. Currency effects and southbound flows from other regional markets remained secondary factors during the period.