Quantitative Research

TWSE Short Interest Weekly (Jun 12th): Shin Kong Financial, Yang Ming Marine, UMC, TSMC

12 Jun 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 Jun 12th. Aggregate short interest was USD 47,749m, down 2.1% week-on-week, compared to a 2.0% decline in the TWSE index, indicating short interest fell broadly in line with the market. The largest short value decreases were in UMC (down USD 346m), Wiwynn (down USD 345m), Asustek Computer (down USD 215m), Innolux (down USD 214m), and TSMC (down USD 191m). The largest short value increases were in Quanta Computer (up USD 191m), Realtek Semiconductor (up USD 121m), and Jentech Precision Industrial (up USD 105m). Yang Ming Marine saw the sharpest ADT-multiple reduction at minus 4.9x, while Shin Kong Financial subsidiary China Development Financial saw the largest percentage increase in short value at plus 88.6% week-on-week.

TSMC (2330 TT) UMC (2303 TT) Realtek Semiconductor (2379 TT) Shin Kong Financial (2888 TT) Yang Ming Marine (2609 TT)

Highlighted Stocks

TSMC, UMC, Realtek Semiconductor, Shin Kong Financial, Yang Ming Marine

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