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TSMC, AI drive US investor holdings in Taiwan to record $668b

US investors now hold a record US$668 billion in Taiwan equities—about 23% of the market—following a US$12 billion inflow in 2025. Semiconductor firms dominate the landscape, accounting for over 60% of Taiwan’s total market value, with TSMC alone representing 40% of the Taiex index.

Data from Bloomberg shows US giants like Vanguard, BlackRock, and JPMorgan hold roughly 35% of TSMC. This surge reflects Taiwan’s rapid market expansion, which was fueled by the US becoming the island’s largest export market in 2025 and a GDP growth of 8.63%.

However, analysts warn of volatility. William Bratton of BNP Paribas cautioned that a reversal in US investor sentiment could prompt a dramatic sell-off, while UBS’s Ally Chen noted that any cooling in AI investment would directly hit semiconductors and tech hardware.

🔗 Source: South China Morning Post

🧠 Food for thought

Implications, context, and why it matters.

A $500 billion deal sits behind record US investment in Taiwan

  • US investment rose as a trade and investment agreement was finalized on Jan. 15, 2026. It targets more chip production and chip factories in the United States 1.
  • Taiwanese semiconductor and technology companies committed at least US$250 billion in new direct US investment. The Taiwanese government added US$250 billion in credit guarantees to help smaller supply-chain partners move operations to the United States 1.
  • The US set a 15% cap on reciprocal tariffs for Taiwanese goods, down from 20% imposed in August, according to CNBC as cited by Yahoo Finance 1. Record US$668 billion in US holdings of Taiwan equities mainly comes from inflows plus Taiwan’s market-cap growth, not the January 2026 agreement.

Deeper US ties add geopolitical risk for investors

  • The agreement sits within US industrial policy that seeks stronger supply chain security and a response to Chinese technological advances 1.
  • Taiwan tightened export controls. It added firms such as Huawei and Semiconductor Manufacturing International Corporation (SMIC), a major mainland China chipmaker, to its entity list. Exports to listed companies now need licenses 2.
  • Some analysts say more US onshoring could weaken Taiwan’s “silicon shield” over time if US reliance on Taiwan-based fabrication drops 3. A change like that could reshape Beijing’s thinking and raise the geopolitical risk tied to US$668 billion in US holdings of Taiwan equities.

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