Quantitative Research

TWSE Short Interest Weekly (May 8th): Powerchip Semiconductor Manufacturing, ASE Industrial

08 May 2026 By Ke Yan, CFA
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Abstract: We analyzed TWSE short interest for stocks with market cap of at least USD 100m as of May 8th. Aggregate short interest stood at USD 43,199m, up 8.3% week-on-week, outpacing the TWSE index which rose 6.9% over the same period. Among stocks with the largest weekly increases in short value, ASE Industrial (3711 TT) led with a gain of USD 218m (total short value USD 960m), followed by UMC (2303 TT) at +USD 204m, Asustek Computer (2357 TT) at +USD 196m, Wiwynn (6669 TT) at +USD 188m, and Powerchip Semiconductor Manufacturing (6770 TT) at +USD 183m (53.7% increase in short value). On the other side, Jentech Precision Industrial (3653 TT) saw the largest short cover with a decrease of USD 225m, followed by Hon Hai Precision (2317 TT) at -USD 111m and King Yuan Electronics (2449 TT) at -USD 108m. By absolute short value, Wiwynn remained the most shorted stock at USD 1,845m, ahead of UMC at USD 1,601m and Asustek Computer at USD 1,239m.

ASE Industrial (3711 TT) Winbond Electronics (2344 TT) Realtek Semiconductor (2379 TT) Powerchip Semiconductor Manufacturing (6770 TT) Asustek Computer (2357 TT)

Highlighted Stocks

ASE Industrial, Winbond Electronics, Realtek Semiconductor, Powerchip Semiconductor Manufacturing, Asustek Computer

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