Taiwan's stock market jumped at the open, a strong start for local investors even as Wall Street sold off on renewed US-Iran fighting.

• MediaTek surged to its daily limit after Nvidia put a huge sum into the chip designer, dragging the whole market up.
• The Taiwan index opened higher and kept climbing, gaining more than 500 points to move above 46,600.
• Chip design, silicon IP, chip packaging, optoelectronics and other electronics stocks led the way, with cement, textiles, plastics and financials joining in.
• The mood was very different in the US, where the main indexes mostly fell on Monday and only the chip index closed up.
• US and Iran traded attacks again after a month-long lull, pushing oil prices up and raising worries that inflation will get worse.

Outlook: Taiwan's chip stocks look set to keep leading while the Middle East fighting keeps pressure on oil and global markets.