Stock Markets June 30, 2026 02:00 AM

Taiwan benchmark tumbles 3.64% as tech-related sectors lead losses

Optoelectronic and Electronic Parts/Components sectors drag the market; mixed individual movers include sharp gains and steep declines

By Maya Rios
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Taiwan's main index closed down 3.64% on Tuesday, with the Optoelectronic and Electronic Parts/Components sectors among the largest decliners. Individual stocks showed wide dispersion: several small-cap names posted double-digit percentage gains, while other firms, including large-cap Formosa Plastics and AP Memory Technology, recorded substantial drops. Commodity and FX markets moved modestly, with crude and Brent oil lower and the US Dollar Index Futures higher.

Taiwan benchmark tumbles 3.64% as tech-related sectors lead losses
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Key Points

  • Taiwan Weighted closed down 3.64%, with losses concentrated in the Optoelectronic and Electronic Parts/Components sectors.
  • Notable individual movers included strong gains for TW:1435, TW:6226 and TW:2484, while TW:1301, TW:6531 and TW:3017 recorded steep declines.
  • Commodities and FX were mixed: August crude and September Brent oil fell, gold futures declined, USD/TWD and TWD/CNY were effectively unchanged, and the US Dollar Index Futures rose.

Taiwan equities finished lower on Tuesday, with the Taiwan Weighted index closing down 3.64% as losses in the Optoelectronic and Electronic Parts/Components sectors weighed on the market.

At the close, the Taiwan Weighted registered a 3.64% decline.

Among individual stocks, the session's top performers on the Taiwan Weighted included Chung Fu Tex-International Corp (TW:1435), which advanced 9.95% or 2.05 points to finish at 22.65. Para Light Electronics Co Ltd (TW:6226) rose 9.94% or 1.65 points to close at 18.25, and Siward Crystal Technology Co Ltd (TW:2484) gained 9.87% or 6.90 points to end the day at 76.80.

The heaviest declines were recorded by Formosa Plastics Corp (TW:1301), which fell 10.00% or 5.80 points to close at 52.20. AP Memory Technology Corp (TW:6531) dropped 10.00% or 110.00 points to finish at 990.00, and Asia Vital Components Co Ltd (TW:3017) was down 9.98% or 250.00 points to 2,255.00 at the close.

Falling stocks outnumbered advancing ones on the Taiwan Stock Exchange by 0 to 0.

Market highs were also noted among the winners: shares of Para Light Electronics Co Ltd (TW:6226) rose to 3-years highs; up 9.94% or 1.65 to 18.25. Shares in Siward Crystal Technology Co Ltd (TW:2484) rose to all time highs; rising 9.87% or 6.90 to 76.80.

Commodities trading saw crude oil for August delivery fall 0.89% or 0.63 to $70.12 a barrel. Brent oil for September delivery decreased 0.73% or 0.54 to $73.37 a barrel. The August Gold Futures contract fell 1.10% or 44.40 to trade at $3,994.50 a troy ounce.

Currency and index moves included USD/TWD which was unchanged 0.01% to 31.87, while TWD/CNY was unchanged 0.00% to 0.21. The US Dollar Index Futures was up 0.30% at 101.18.


Below are key details from the session:

  • Index movement: Taiwan Weighted -3.64% at the close.
  • Top gainers: TW:1435 (+9.95%), TW:6226 (+9.94%), TW:2484 (+9.87%).
  • Largest decliners: TW:1301 (-10.00%), TW:6531 (-10.00%), TW:3017 (-9.98%).
  • Commodities: August crude oil $70.12/barrel (-0.89%); September Brent $73.37/barrel (-0.73%); August Gold Futures $3,994.50/oz (-1.10%).
  • FX and indexes: USD/TWD 31.87 (unchanged 0.01%); TWD/CNY 0.21 (unchanged 0.00%); US Dollar Index Futures 101.18 (+0.30%).

The session featured a mix of pronounced individual stock moves set against a broadly lower market. Several small- and mid-sized names recorded double-digit percentage gains, including instances of multi-year and all-time highs for specific issues, while other stocks, including large names, posted significant single-session declines. The market breadth line included above reflects the day's aggregated advancing and declining counts as reported.

Risks

  • Market breadth figures reported as "Falling stocks outnumbered advancing ones on the Taiwan Stock Exchange by 0 to 0" indicate reporting or data limitations - this affects clarity on overall market participation (impacts equities sector reporting).
  • Significant single-session moves in individual names (both large declines and sharp gains) suggest elevated volatility for affected stocks - this is a risk to investors in those individual equities and related sectors such as chemicals and electronics.
  • Commodity price moves (lower crude and Brent) introduce uncertainty for energy- and commodity-sensitive firms and sectors, potentially affecting earnings and cash flows for companies exposed to oil price changes.

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