Quantitative Research

TWSE Short Interest Weekly (May 29th): Shin Kong Financial, Quanta Computer, Innolux, ASE Industrial

29 May 2026 By Ke Yan, CFA
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Abstract: We analyzed TWSE short interest for stocks with market capitalization of at least USD 100m as of May 29th. Aggregate short interest stood at USD 48,973m, up 4.4% from USD 46,910m a week prior, while the TWSE index rose 5.8% over the same period. On the increases side, UMC led with a short value rise of USD 454m, followed by ASE Industrial (+USD 280m), Quanta Computer (+USD 242m), Powerchip Semiconductor (+USD 204m), and Innolux (+USD 176m). On the decreases side, Wiwynn saw the largest short value reduction at -USD 226m, followed by Zhen Ding Technology (-USD 76m), Alchip Technologies (-USD 74m), Hon Hai Precision (-USD 59m), and Cathay Financial (-USD 56m). The most shorted stock by value remained UMC at USD 2,556m, with Shin Kong Financial also highlighted among key movers this week.

Quanta Computer (2382 TT) Shin Kong Financial (2888 TT) Innolux (3481 TT) ASE Industrial (3711 TT) Delta Electronics (2308 TT)

Highlighted Stocks

Quanta Computer, Shin Kong Financial, Innolux, ASE Industrial, Delta Electronics

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