Taiex Falls Below 46000 Points as 4 Silicon Photonics Stocks Briefly Hit Limit-Down

林林靖雯 財經主筆2026-10-30 10:05

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Taiex fell below the 46000-point mark on the 30th, reporting 45101.63 points as of 10 a.m., down 1266.7 points, or 2.73%, with turnover of 3849.39億元. Silicon photonics stocks plunged, with only 光鼎 bucking the trend to rise.

Broad Market Falls Below 46000 Points

Taiex fell below the 46000-point mark on the 30th. As of the morning 10時 reporting 45101.63點, down 1266.7點, a decline of 2.73%, with turnover reaching 3849.39億元. Sector performance was weak, with declines in silicon photonics concept stocks widening significantly, becoming the focus of the market.

4 Silicon Photonics Stocks Briefly Hit Limit-Down

A total of 4 stocks briefly fell to limit-down. 聯亞 (3081) reporting 2345元, down 8.93%, with a low of 2320元 at limit-down. 光環 (3234) reporting 154元, down 8.33%, with a low of 151.5元 at limit-down. 全新 (2455) reporting 445.5元, down 7.95%, with a low of 436元 at limit-down. 前鼎 (4908) reporting 182.5元, down 7.36%, with a low of 177.5元 at limit-down.

More Than 20 Stocks Plunge Over 5%

Stocks falling more than 5% include: 智邦 (2345) reporting 1605元, down 8.55%; IET-KY (4971) reporting 435元, down 7.94%; 波若威 (3163) reporting 501元, down 7.56%; 台星科 (3265) reporting 196元, down 7.55%; 眾達-KY (4977) reporting 170元, down 7.36%; 旺矽 (6223) reporting 4485元, down 7.33%; 訊芯-KY (6451) reporting 334元, down 7.22%; 辛耘 (3583) reporting 555元, down 7.04%; 矽格 (6257) reporting 212元, down 7.02%. 穎崴 (6515) reporting 4350元, down 6.55%; 汎銓 (6830) reporting 450.5元, down 6.54%; 惠特 (6706) reporting 126元, down 6.32%; 立碁 (8111) reporting 73.5元, down 6.13%; 聯鈞 (3450) reporting 406.5元, down 6.12%; 弘塑 (3131) reporting 1880元, down 6%; 光聖 (6442) reporting 1235元, down 5.36%; 采鈺 (6789) reporting 415元, down 5.36%; 大立光 (3008) reporting 5505元, down 5.33%; 上詮 (4977) reporting 465.5元, down 5%.

Only 光鼎 Bucks Trend to Close Higher, Flagged as Watch Stock

Other stocks down 4% include: 日月光投控 (3711) reporting 652元, down 4.54%; 明泰 (3380) reporting 30.7元, down 4.21%; 富采 (3714) reporting 60.3元, down 4.13%, with a low of 59.5元; 華星光 (4979) reporting 457.5元, down 4.09%. As of press time, only 1 stock was in positive territory, LED packaging maker 光鼎 (6226) reporting 39.75元, up 1.4%. 光鼎 was flagged as a watch stock by the TWSE due to a cumulative turnover rate of 50.55% over the most recent six trading sessions and a turnover rate of 20.63% on October 29. Investors should make independent judgments, evaluate carefully and bear their own investment risks.

FAQ

How did Taiex perform at 10 a.m. on the 30th?

Taiex fell below the 46000-point mark, reporting 45101.63點 as of 10 a.m., down 1266.7點, or 2.73%, with turnover of 3849.39億元.

Which silicon photonics concept stocks briefly touched limit-down?

A total of 4: 聯亞 reporting 2345元, low 2320元; 光環 reporting 154元, low 151.5元; 全新 reporting 445.5元, low 436元; 前鼎 reporting 182.5元, low 177.5元.

Why did 光鼎 rise against the trend and get flagged as a watch stock?

光鼎 reporting 39.75元, up 1.4%, was the only stock in positive territory. Its cumulative turnover rate over the most recent six trading sessions was 50.55%, and its turnover rate on October 29 was 20.63%, so it was flagged as a watch stock by the TWSE.