Stock Markets July 1, 2026 02:00 AM

Taiwan market closes higher as biotech and chemical stocks lead gains

Taiwan Weighted climbs 0.96% with outsized moves in select mid-cap names

By Caleb Monroe
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Taiwan stocks ended the session higher, with the Taiwan Weighted rising 0.96%. Gains were concentrated in Biotech & Medical Care, Chemical/Bio & Medical Care and Chemical sectors. Avision Inc and several chemical and scientific names posted large percentage increases, while Primax Electronics, Yeong Guan Energy Technology Group and Siward Crystal Technology were among the heaviest decliners. Key commodity and currency benchmarks showed modest moves during the session.

Taiwan market closes higher as biotech and chemical stocks lead gains
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Key Points

  • Taiwan Weighted rose 0.96% at the close, driven by gains in Biotech & Medical Care, Chemical/Bio & Medical Care and Chemical sectors.
  • Avision Inc (TW:2380) led gains with a 225.76% increase to 21.50; Jinan Acetate Chemical (TW:4763) and Topco Scientific (TW:5434) each gained 10.00%.
  • Primax Electronics (TW:4915), Yeong Guan Energy Technology Group (TW:1589) and Siward Crystal Technology (TW:2484) were notable decliners, with Primax down 11.56% to 65.00.

Taiwan's share market closed higher on Wednesday, led by strength in the Biotech & Medical Care, Chemical/Bio & Medical Care and Chemical sectors. At the close, the Taiwan Weighted index had advanced 0.96%.

The session's top performer on the Taiwan Weighted was Avision Inc (TW:2380), which surged 225.76% - a gain of 14.90 points - to finish at 21.50. Other notable winners included Jinan Acetate Chemical Co Ltd (TW:4763), up 10.00% or 4.35 points to 47.85, and Topco Scientific Co Ltd (TW:5434), which rose 10.00% or 49.00 points to close at 539.00.

On the downside, Primax Electronics Ltd (TW:4915) recorded the largest decline among the main movers, sliding 11.56% or 8.50 points to end at 65.00. Yeong Guan Energy Technology Group Co Ltd (TW:1589) fell 9.92% or 0.61 points to 5.54, while Siward Crystal Technology Co Ltd (TW:2484) lost 9.90% or 7.60 points to close at 69.20.

The report of market breadth contained an unusual note: "Falling stocks outnumbered advancing ones on the Taiwan Stock Exchange by 0 to 0." That figure appears as reported and suggests either a data anomaly or incomplete breadth data available at the time of publication.

Several individual-stock milestones were registered in the session. Shares of Avision Inc (TW:2380) moved to five-year highs, up 225.76% or 14.90 to 21.50. Primax Electronics Ltd (TW:4915) closed at 52-week lows after falling 11.56% or 8.50 to 65.00. Yeong Guan Energy Technology Group Co Ltd (TW:1589) declined to what was reported as an all-time low, down 9.92% or 0.61 to 5.54. Topco Scientific Co Ltd (TW:5434) was reported to have reached an all-time high, gaining 10.00% or 49.00 to 539.00.

In commodities trading, crude oil for August delivery was up 0.10% or 0.07 to $69.57 a barrel. Brent crude for September delivery rose 0.12% or 0.09 to $73.04 a barrel. The August Gold Futures contract declined 1.29% or 51.90 to trade at $3,986.60 a troy ounce.

Currency and index moves included USD/TWD rising 0.23% to 31.86, TWD/CNY unchanged at 0.09% to 0.21, and the US Dollar Index Futures up 0.11% at 101.07.


Market takeaway

The Taiwan market's modest advance was driven by large percentage moves in a handful of listed names, particularly within biotech and chemical-related sectors, while a set of other stocks experienced steep declines. Commodity and currency benchmarks moved within relatively narrow ranges during the session.

Risks

  • Several individual stocks recorded steep declines or reached low price levels - Primax Electronics (TW:4915) hit 52-week lows and Yeong Guan Energy Technology Group (TW:1589) was reported to fall to an all-time low - indicating single-stock volatility that may affect investor positions in the electronics and energy-related segments.
  • A concentration of large percentage moves in a small group of names could mean market advances are not broad-based; the reported market-breadth figure of "0 to 0" for falling versus advancing stocks suggests incomplete or anomalous breadth data for the session.
  • Commodities and currency benchmarks showed movement during the session - including crude oil, Brent and gold - which can influence input costs and currency-sensitive exporters in chemical and biotech supply chains.

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