Quantitative Research

TWSE Short Interest Weekly (Oct 30th): AP Memory Technology, Nan Ya Plastics, Wiwynn, MediaTek

30 Oct 2026 By Ke Yan, CFA, FRM
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Abstract: We analyzed changes in short interest for TWSE stocks as of October 30th. Aggregated short interest was USD39,663m, down 2.5% from USD40,698m a week earlier, while the TWSE index fell 1.8% over the same period. The largest weekly increases in short value were Nan Ya Plastics (+US$307m, 37.0%), TSMC (+US$147m, 13.8%), and Yageo (+US$98m, 15.1%). The largest weekly decreases were MediaTek (-US$185m, -21.9%), LARGAN Precision (-US$132m, -13.4%), AP Memory Technology (-US$117m, -50.2%), Wiwynn (-US$115m, -30.7%), and BizLink (-US$110m, -26.8%).

Nan Ya Plastics (1303 TT) Wiwynn (6669 TT) MediaTek (2454 TT) BizLink (3665 TT) AP Memory Technology (6531 TT)

Highlighted Stocks

Nan Ya Plastics, Wiwynn, MediaTek, BizLink, AP Memory Technology

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