Taiwan's main stock index opened down Wednesday, a mildly negative start for investors in one of Asia's biggest tech-heavy markets.

• The Taiwan Stock Exchange's benchmark index opened lower, slipping from the 45,000 area.
• Early trading turnover was thin, suggesting caution rather than heavy selling.
• The US dollar also weakened in Taipei trading, which can cut into exporters' earnings.
• Taiwan's market is dominated by chip and electronics makers, so global tech sentiment tends to drive the index.

Outlook: A soft open with light volume points to a drifting session unless global tech news shifts the mood.