Quantitative Research

TWSE Foreign Holding Weekly (Jul 9th): TSMC, Unimicron Technology, ASE Industrial, MediaTek

09 Jul 2026 By Ke Yan, CFA
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Abstract: We analyzed TWSE foreign holding data as of Jul 9th, covering stocks with market cap of at least USD100m. Total foreign holdings stood at USD2,219.9bn, down from USD2,312bn a week ago, a decrease of USD92bn (4.0% WoW), underperforming the TWSE index which fell 3.0% over the same period. We estimate net foreign outflows of USD5,945m for the week. On the outflow side, TSMC led with USD2,549m in weekly outflows, followed by Unimicron Technology (USD780m), ASE Industrial (USD609m), and MediaTek (USD508m). On the inflow side, Alchip Technologies was the top recipient with USD311m in weekly inflows, followed by UMC (USD275m) and Asustek Computer (USD274m).

Alchip Technologies (3661 TT) TSMC (2330 TT) Unimicron Technology (3037 TT) MediaTek (2454 TT) ASE Industrial (3711 TT)

Highlighted Stocks

Alchip Technologies, TSMC, Unimicron Technology, MediaTek, ASE Industrial

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