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Help me set up FinLab and analyze 2340 台亞. Please read: https://finlab.finance/en/setup?stock=2340

2340

台亞 Semiconductor As of 2026-06-17 Updated daily after market close

quality needs a look, premium valuation, no active signal today.

This page refreshes daily after the close. Add 台亞 to your watchlist to track signal changes on your next visit.
Valuation 16Quality 8Growth 44Momentum 82Chips 63

Is 台亞 a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 8th market percentile. Latest quarterly ROE ≈ -3.4%.

  • Valuation is high.PE is in the 99th market percentile; within its own history, PE is around the 99th percentile.

  • Foreign investors are net buying.Foreign 20-day net flow ≈ 2.1% of volume (net buy).

Chip flow

Neutral +0.03
BearishNeutralBullish

Institutional rotation, concentration steady — neutral

  • Institutional rotation, concentration steady — neutral
  • 高橋 holds 707 lots
  • sellers have 5,296 lots left, ~84 sessions to clear

Window from 2026-01-17 · Price +34% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 高橋 has accumulated 707 lots since the start (sold 0%), still adding.
  • Main distributor 摩根大通 peaked at 4,836 lots, has sold 53%, 2,279 left, paused recently.
  • TDCC big holders (absolute) >1000-lot holders -0.09pp, mid holders +3, retail -0.87pp — little change.
  • Foreign hedge-desk net short Net short -788 lots (inferred from branch profile, mostly hedging — not necessarily bearish, not case-confirmed).
Branch inventory reconstruction
Accumulating holders Branches that accumulated shares during the window and still hold positive inventory; they are the absorbing side.
Distributing sellers Branches that built inventory earlier and have been selling it down; the remaining number estimates what has not cleared.
Net-short desks Trading-desk branches with negative inventory or net selling, often hedge, offsetting, or short-term flow. It is not automatically a bearish view.
Accumulating
高橋國票證券元大-新竹台新-嘉義國泰證券凱基-站前
Distributing
摩根大通凱基-台北美商高盛台灣摩根士丹利新加坡商瑞銀台新
Desks
own scale
元大-雙和玉山-左營大昌-新店元大-鳳中
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 高橋 +707
    sold 0%· still adding
  • 國票證券 +674
    sold 1%
  • 元大-新竹 +511
    sold 0%
  • 台新-嘉義 +458
    sold 0%
  • 國泰證券 +431
    sold 0%
  • 凱基-站前 +252
    sold 22%

Distributing

  • 摩根大通 2,279 left
    sold 53%· paused recently
  • 凱基-台北 1,770 left
    sold 60%· ~21 sessions to clear
  • 美商高盛 2,176 left
    sold 44%· paused recently
  • 台灣摩根士丹利 1,284 left
    sold 57%· ~59 sessions to clear
  • 新加坡商瑞銀 1,115 left
    sold 54%· paused recently
  • 台新 270 left
    sold 89%· paused recently

Desks

  • 元大-雙和 -1,283
    unclassified
  • 玉山-左營 -1,023
    unclassified
  • 大昌-新店 -968
    unclassified
  • 元大-鳳中 -813
    unclassified
Still selling 5,296 lots ~84 sessions to bottom at most
Recent buy/sell force +1,768 absorbed / -2,307 sold sellers slightly ahead
Hedge-desk net short -723 lots potential cover-buying, not selling pressure
TDCC big holders · absolute-holding cross-check
>1000-lot holder share Retail (<400 lots) share Price (right axis)

Mixed direction: big-holder and retail changes are not aligned.

Describes chip flow, not investment advice. Branch data discloses only high-volume branches with ~1-day lag; TDCC is weekly. Inventory is a relative reconstruction from the window start, not absolute holdings.

Historical evidence

Valuation regime and subsequent returns

Each day's PE is converted to its own-history percentile (as of that day), then we look at adjusted-close returns over the next 240 trading days by valuation regime.

PE percentile bandSample days240-day avg returnMedianWin rateAvg excess (vs index)
0-20 571+36.5% +44.9% 78.6% +24.1%
20-40 428+22.8% +27.1% 75.9% +3.2%
40-60 516+10.7% +7.4% 62.2% +1.2%
60-80 463+22% +14.8% 58.7% +10.3%
80-100 You are here658+11.2% -6.8% 46.4% -6.2%

Percentiles use an expanding own-history window (no look-ahead); forward return is 240 trading days on adjusted close. Sample days overlap; distribution is indicative only.

Current PE ≈ 508.57, at the 99.0th percentile of its own history (80-100 band).

Valuation × momentum historical grid

Every day in its own history is bucketed by valuation tercile (own-history PE) and 60-day momentum sign into six cells; we show adjusted-close returns over the next 120 trading days per cell.

Valuation
Momentum
Cheap (own-history bottom 1/3)
Mid
Expensive (own-history top 1/3)
60-day momentum up
+13.3%
Win rate 78.4% Excess +6.8%
472d
+19.4%
Win rate 69.5% Excess +14.6%
479d
Now
+1.2%
Win rate 42.2% Excess -5.4%
673d
60-day momentum down
+17.1%
Win rate 73.9% Excess +8.7%
379d
+13.5%
Win rate 64.2% Excess +5.9%
335d
-2.4%
Win rate 29.4% Excess -12%
418d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 673 historical days, 120-day forward avg gained 1.2%, win rate 42.2%, lagged the market by 5.4%.

Days = trading days in this bucket; returns use adjusted prices, ex-costs. 60-day momentum: direction of this stock's price over the past 60 trading days.

Signals not active (historical stats for reference)

These are not occurring now; historical samples shown for comparison.

252-day price high (breakout)

Pending

Adjusted close makes a new 252-day high; repeats within 20 days counted once.

22 times historically; 60-day forward avg +3.78%, win rate 42.9%, beating the market by -0.31 pts on average.

Monthly revenue YoY ≥ 20% (from filing deadline)

Pending

Monthly revenue YoY ≥ 20%; event date is the first trading day after the filing deadline (no look-ahead).

41 times historically; 60-day forward avg +0.24%, win rate 35.7%, beating the market by -6 pts on average.

Foreign net buying for 5 straight days

Pending

Foreign net flow (ex-dealer) positive for 5 straight days; event on day 5; repeats within 20 days counted once.

66 times historically; 60-day forward avg +5.66%, win rate 63.6%, beating the market by +1.24 pts on average.

What does 台亞 do? Company profile

半導體業;光電半導體、感測元件、發射元件與寬能隙功率元件 臺灣證券交易所上市

Overview

代號2340確認為臺灣證券交易所上市普通股,上市簡稱「台亞」,公司全名為台亞半導體股份有限公司,原名光磊科技股份有限公司。公司成立於1983年12月,總部位於新竹科學園區新竹市力行五路1號,1995年5月上市。公司官網揭露員工人數830人、實收資本額約新台幣43.8億元;Goodinfo與公開資訊亦顯示股本約43.86億元、普通股438,622,846股。2025年度個體財報簽署人為董事長李國光、經理人蔡育軒、會計主管吳嘉玲。主要股東依公司官網2026年4月27日停止過戶日股東名簿:台灣日亞化學股份有限公司持股88,811,822股、20.25%;中國信託商業銀行受託保管日亞化學工業株式會社投資專戶持股11,014,657股、2.51%;其他外資保管專戶及員工持股信託持股比例多低於2%。2021年臺灣證券交易所公告上市股票簡稱變更為台亞,顯示其由光磊轉型為台亞半導體。公司主要據點包括新竹力行廠與創新廠,關係企業與集團布局包含積亞半導體、冠亞半導體、星亞視覺、和亞智慧、上亞科技等,但部分為興櫃或未上市公司。

Business

台亞是以光電半導體元件製造與銷售為核心的營運公司,主要產品包括感測元件、發射元件、發光元件、功率元件與系統產品。官網產品頁指出,感測元件涵蓋光電二極體、光電晶體、雙向光閘流體,具矽基與化合物半導體磊晶、設計與晶粒製造能力,應用於穿戴式醫療、工業、汽車、家電、安防、消費電子等。發射與發光產品包含LED、紅外線LED等,應用於車用內外裝照明、雨滴感應、遙控器、安防紅外線、顯示屏與照明。台亞集團正把既有光電與磊晶能力延伸至第三代半導體,積亞半導體主攻SiC SBD、SiC MOSFET、晶粒與代工封裝;冠亞半導體主攻GaN晶粒、IC、電源裝置、充電模組、功率元件設計與晶圓代工。依TreeLazy彙整之114年度產品營收分布,2025年合併營收約新台幣43.26億元,其中感測元件約25.48億元、58.90%,系統產品約8.73億元、20.18%,發光元件約6.09億元、14.07%,其他約2.91億元、6.72%,功率產品約0.06億元、0.13%;產品組合顯示感測元件為最大營收來源,功率元件仍處早期導入。2025年度個體財報顯示個體營收34.57億元、營業毛利率約6%,營業淨損3.38億元、稅後淨損12.62億元、每股虧損2.88元,顯示轉型與子公司投資階段對獲利造成壓力。商業模式以自有晶粒、元件製造、客製化設計、集團內系統整合與部分代工平台服務為主,客戶多未公開;公開資料可確認應用端涵蓋穿戴健康管理、醫材、消費電子、工業控制、車用、伺服器電源、通訊設備、電動車、充電樁、太陽能與儲能等。

Outlook 2025–2028

2025年已進入轉型驗證期:公司2025年法說會揭露集團策略為提升產品品質與客戶服務、加速新產品開發、降低生產成本、提高產品毛利、多元發展寬能隙化合物功率元件,並投資次世代基板材料與磊晶技術改善成本結構。技術藍圖從矽/鍺、砷化鎵/磷化銦的感測與發射元件,延伸至GaN與SiC第三代寬能隙功率元件,長期再觀察氧化鎵與氮化鋁等第四代材料。2025年至2026年重點在非侵入連續血糖監測NICGM/HUSD計畫、客戶驗證與臨床前/人體試驗;法說會規劃2025至2026年持續降低光訊號偏差、擴大量測範圍、改善ML模型與即時資料分析,目標產品MARD逐步從小於20%推進至小於15%,並涉及北醫IRB、CE/FDA認證等醫療法規路徑。2025年與晉弘科技、星亞視覺、和亞智慧、上亞科技、台北醫學大學等合作開發非侵入式血糖監測光學感測技術,2026年以後若臨床與法規進度順利,才可能形成醫療級或穿戴式放量機會。功率半導體方面,公開新聞顯示積亞已完成SiC SBD與MOSFET 650V、1200V、1700V平台量產認證,並朝伺服器、工控、電動車、充電樁、太陽能與儲能設備應用推進;冠亞GaN已完成650V D-mode平台,規劃E-mode平台,應用於電動車、伺服器電源與通訊設備。2026至2028年成長動能主要來自感測元件在智慧穿戴與醫療監測的滲透、SiC/GaN功率產品客戶驗證後的量產、集團垂直整合與成本改善。主要風險包括:非侵入式血糖技術仍需臨床、法規與量產一致性驗證;SiC/GaN競爭者眾多且中國供給與價格壓力大;新產線折舊、研發與子公司權益法虧損可能持續侵蝕獲利;功率元件需長客戶認證週期;若伺服器、EV、光通訊或穿戴需求不如預期,營收與毛利改善會延後。2027至2028的具體營收與獲利數字公司未公開承諾,因此不作數字預測。

Supply Chain

Upstream
  • 台灣日亞化學股份有限公司 主要股東,持股20.25%;屬日亞化學在台投資公司,非台股上市櫃公司。日亞化體系在LED、雷射二極體與車用客戶資源上對台亞具策略意義,但公開資料未揭露其為直接供應商。
  • 日亞化學工業株式會社 日本LED大廠,透過保管專戶持股2.51%;非台股上市櫃公司。公開資料顯示其為重要外資股東與策略合作背景。
  • 應用材料 美國上市半導體設備商之在台體系;台亞供應商大會曾邀請台灣應用材料就碳化矽應用分享,屬設備與製程生態系參與者,非台股上市櫃公司;是否為直接供應商未公開確認。
  • 漢民科技 半導體設備與製程服務業者;台亞供應商大會曾邀請漢民科技分享碳化矽應用與市場展望,屬設備/製程支援生態系,未上市且是否為直接供應商未公開確認。
  • 中美晶 5483 台灣上市櫃矽晶圓與半導體材料供應鏈公司;與台亞同處矽、SiC/GaN材料上游生態系。未查得台亞直接採購關係,列為產業上游關聯而非確認供應商。
  • 合晶 6182 台灣上市櫃矽晶圓供應商;與台亞功率半導體布局同屬晶圓材料上游生態系。未查得台亞直接採購關係,列為產業上游關聯而非確認供應商。
Downstream
  • 晉弘 6796 醫材與智慧感測合作夥伴;公開新聞指出台亞與晉弘科技及其子公司晉昇智能感測共同展示非侵入式血糖檢測技術,屬HUSD/NICGM醫療與穿戴應用下游合作方。
  • 訊映 4155 醫材公司;台亞2025年法說會將訊映列為NICGM潛在醫材客戶之一,屬潛在下游而非已確認大量出貨客戶。
  • 台北醫學大學 學研與臨床驗證合作單位,非上市櫃公司;公開資料與法說會指出北醫參與非侵入式血糖監測計畫、IRB與人體/動物研究規劃。
  • 星亞視覺 台亞集團關係企業,公開資料顯示代號7753為興櫃或未上市櫃階段,非臺證所/櫃買中心上市櫃普通股;在NICGM專案中協助sensor board、電路設計與系統整合。
  • 和亞智慧 台亞集團關係企業,公開資料顯示代號7825為興櫃或未上市櫃階段;在非侵入式血糖監測計畫中提供AI或演算法相關能力。
  • 上亞科技 台亞集團合作/關係企業;公開資料提及其參與HUSD特殊鍍膜或光學多層膜製程,是否為上市櫃公司與代號狀態需另查,保守列為非上市櫃。
  • 國際穿戴與消費電子大廠 公司官網稱穿戴健康管理應用受國際大廠認可,法說會也列美、韓、台、中等穿戴大廠為潛在客戶;具體客戶名稱未公開。
  • 伺服器、工控、電動車、充電樁、太陽能與儲能設備客戶 功率元件下游應用族群;公開新聞指出SiC/GaN產品可應用於這些市場,但具體客戶名單未公開。

Competitors

  • 億光 2393 LED封裝、紅外線與光電元件同業,與台亞發射/感測/LED應用部分重疊。
  • 鼎元 2426 LED晶粒與光電半導體同業,與台亞傳統發光元件與光感測領域具競爭或替代關係。
  • 富采 3714 LED與化合物半導體集團,涵蓋晶電、隆達等資源;在LED、車用與化合物半導體布局上與台亞部分重疊。
  • 光鋐 4956 LED磊晶與晶粒廠,與台亞發光元件及部分化合物半導體製程能力重疊。
  • 佰鴻 3031 LED封裝與模組應用同業,與台亞LED與紅外線應用市場部分重疊。
  • 漢磊 3707 功率半導體與化合物半導體代工廠,SiC/GaN布局與台亞集團積亞、冠亞的功率元件平台形成競爭或同業比較。
  • 嘉晶 3016 磊晶與化合物半導體供應鏈公司,與台亞在功率半導體材料、磊晶或代工生態系具同業比較關係。
  • 台半 5425 功率元件與分離式元件廠,在功率半導體應用端與台亞SiC/GaN長期布局具競爭或替代關係。
  • 強茂 2481 二極體與功率元件廠,與台亞功率元件發展方向部分重疊。
  • 茂矽 2342 半導體晶圓與功率元件相關同業,與台亞在功率半導體製造鏈有同業比較關係。
Sources(20)

This company profile is compiled from public sources (annual reports, filings, news and analyst reports), not finlab backtest data; the 2025–2028 outlook contains forward-looking estimates and is for reference only.

Method and limitations

  • All returns use adjusted close (etl:adj_close), already adjusted for dividends and splits.
  • Excess return is measured against the TAIEX total-return index (dividends included).
  • Valuation regime and percentile stats use an expanding own-history window (no future data).
  • Revenue-signal event dates align to the first trading day after the filing deadline, avoiding look-ahead.
  • Event samples may overlap in time; stats describe historical distribution only and are less reliable when samples are few.

This page is historical statistics for educational purposes and is not investment advice. Investing involves risk; past performance does not indicate future results. Assess and bear the risk yourself before trading.