Taiwan's market opened weak after a big rebound the day before, a neutral-to-negative sign for investors as trading stays thin and cautious.

• The Taiwan index opened lower and quickly fell more than 200 points, drifting around the 45,000 level.
• Heavyweights led the drop, with TSMC, MediaTek, Foxconn and Delta all sliding.
• The day before saw a sharp reversal — the market dropped hundreds of points early, then closed up over 400 points and won back the 45,000 mark.
• US markets closed higher overnight as chip stocks bounced ahead of Nvidia's earnings, and oil fell hard, with Brent slipping below $90.
• Foreign and local institutions were net sellers, and trading volume stayed low, showing most people are waiting on the sidelines.

Outlook: Analysts see room to push toward 47,000 if the market holds above roughly 44,800, but a break below that would mean more weakness, with stronger support near 42,000.