Quantitative Research

TWSE Short Interest Weekly (Oct 22nd): Wiwynn, Nan Ya Plastics, Delta Electronics, Nanya Technology

22 Oct 2026 By Ke Yan, CFA, FRM
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Abstract: We analyzed the changes in short interest of TWSE stocks as of Oct 22nd. The aggregated short interest was USD40,698m, down 4.0% from USD42,397m a week ago. Short interest decreased by 4.0% last week while the TWSE index decreased by 2.3%. The largest weekly increases in short value came from Nan Ya Plastics, up USD192m or 30.1%, Nanya Technology, up USD160m or 14.5%, Delta Electronics, up USD98m or 18.1%, and TSMC, up USD97m or 10.0%. The largest weekly decrease came from Wiwynn, down USD884m or 70.2%, followed by MediaTek, down USD153m or 15.4%, LARGAN Precision, down USD113m or 10.2%, and Nanya Technology, down USD106m or 30.4%.

Delta Electronics (2308 TT) Nan Ya Plastics (1303 TT) Jentech Precision Industrial (3653 TT) Wiwynn (6669 TT) Nanya Technology (2408 TT)

Highlighted Stocks

Delta Electronics, Nan Ya Plastics, Jentech Precision Industrial, Wiwynn, Nanya Technology

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