Story perspectives

TSMC Fuels 25-Year Index High, Margin Debt Soars to $13 B

6/23/2026

Summary

Story summary

Margin debt topped $13 billion—the highest since September 2000—after a NT$21.3 billion (about $680 million) rise in late May–early June 2026.
TSMC now accounts for 40 % of the Taiex index, lifting it to about 45,614 points in June 2026, a 25-year peak.
Brokerages KGI, Fubon, SinoPac and Cathay raised collateral requirements and interest rates after hitting lending limits.
The Financial Supervisory Commission said leverage stays under control after investor defaults exceeded NT$2 billion in June 2026, the largest monthly total since 2019.

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Story summary

Margin debt topped $13 billion—the highest since September 2000—after a NT$21.3 billion (about $680 million) rise in late May–early June 2026.
TSMC now accounts for 40 % of the Taiex index, lifting it to about 45,614 points in June 2026, a 25-year peak.
Brokerages KGI, Fubon, SinoPac and Cathay raised collateral requirements and interest rates after hitting lending limits.
The Financial Supervisory Commission said leverage stays under control after investor defaults exceeded NT$2 billion in June 2026, the largest monthly total since 2019.