Skip to main content
Free trial

Ask AI to review this stock

Copy the prompt to get recent events, historical reactions, and a short research brief.

Tell your AI:

Help me set up FinLab and analyze 3455 由田. Please read: https://finlab.finance/en/setup?stock=3455

3455

由田 Optoelectronics 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 由田 to your watchlist to track signal changes on your next visit.
Valuation 21Quality 8Growth 56Momentum 92Chips 8

Is 由田 a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 5th market percentile. Latest quarterly ROE ≈ -2.0%.

  • Valuation is high.PE is in the 92th market percentile; within its own history, PE is around the 97th percentile.

  • Foreign investors are net selling.Foreign 20-day net flow ≈ -6.4% of volume (net sell).

Chip flow

Bullish +0.60
BearishNeutralBullish

Single-sided accumulation, concentration rising — bullish

  • Single-sided accumulation, concentration rising — bullish
  • 元大-大天母 holds 499 lots
  • sellers have 2,099 lots left, ~820 sessions to clear

Window from 2026-01-17 · Price +88% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 元大-大天母 has accumulated 499 lots since the start (sold 6%), still adding.
  • Main distributor 美商高盛 peaked at 2,002 lots, has sold 33%, 1,351 left, paused recently.
  • TDCC big holders (absolute) >1000-lot holders +4.50pp, mid holders +2, retail -3.21pp — concentration shifting upward.
  • Foreign hedge-desk net short Net short -583 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
元大-大天母國泰證券玉山證券元大-蘆洲國泰-敦南國票-安和
Distributing
美商高盛凱基-台北摩根大通統一美林華南永昌
Desks
own scale
永豐金證券統一-板橋台新證券元大-內湖
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 元大-大天母 +499
    sold 6%· still adding
  • 國泰證券 +279
    sold 0%· still adding
  • 玉山證券 +224
    sold 4%
  • 元大-蘆洲 +208
    sold 0%· still adding
  • 國泰-敦南 +202
    sold 10%
  • 國票-安和 +168
    sold 0%

Distributing

  • 美商高盛 1,351 left
    sold 33%· paused recently
  • 凱基-台北 923 left
    sold 38%· ~83 sessions to clear
  • 摩根大通 302 left
    sold 72%· ~16 sessions to clear
  • 統一 159 left
    sold 83%· ~4 sessions to clear
  • 美林 104 left
    sold 84%· ~9 sessions to clear
  • 華南永昌 49 left
    sold 82%· paused recently

Desks

  • 永豐金證券 -672
    unclassified
  • 統一-板橋 -414
    unclassified
  • 台新證券 -244
    unclassified
  • 元大-內湖 -230
    unclassified
Still selling 2,099 lots ~820 sessions to bottom at most
Recent buy/sell force +1,118 absorbed / -1,090 sold buyers slightly ahead
Hedge-desk net short -573 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)

Direction matches: big-holder share rose while retail share fell.

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)
0-20 548+21.3% +5.3% 58.4% -7.8%
20-40 435+32.1% +30% 79.8% +26.6%
40-60 507+37% +40.2% 79.1% +19.5%
60-80 377+34.6% +8.5% 56.8% +13%
80-100 You are here458+16.7% +14.3% 62.4% -5.3%

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 ≈ 128.09, at the 96.9th 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
+5%
Win rate 51% Excess -3.1%
365d
+21.9%
Win rate 74.5% Excess +14.3%
521d
Now
+15.4%
Win rate 70.3% Excess +3.3%
606d
60-day momentum down
+5.1%
Win rate 56.5% Excess -2.5%
503d
+25.5%
Win rate 73.8% Excess +17.8%
237d
+31.9%
Win rate 54.7% Excess +9.2%
212d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 606 historical days, 120-day forward avg gained 15.4%, win rate 70.3%, beat the market by 3.3%.

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.

25 times historically; 60-day forward avg +14.28%, win rate 54.2%, beating the market by +10.23 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).

76 times historically; 60-day forward avg +6.98%, win rate 64%, beating the market by +4.27 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.

60 times historically; 60-day forward avg +10.94%, win rate 61%, beating the market by +5.38 pts on average.

What does 由田 do? Company profile

光電業;自動光學檢測設備、半導體檢測設備、PCB/IC載板與面板檢測設備 上櫃 / 櫃買中心

Overview

3455 對應證券為由田新技股份有限公司普通股,簡稱由田,英文名 UTECHZONE Co., Ltd.,在櫃買中心上櫃交易,產業別為光電業,主要營業項目為檢測系統及設備。公司成立於1992年5月23日,股票於2007年12月27日上櫃,官方沿革亦稱其為台灣首家股票上櫃 IPO 的 AOI 設備公司。總部位於新北市中和區連城路268號10樓之1,另有南科分公司、平鎮製造中心、昆山子公司/生產基地等據點。董事長為鄒嘉駿,總經理為張文杰。公開資訊彙整資料顯示實收資本額約新台幣5.985075億元、已發行普通股約59,850,750股。員工規模方面,104人力銀行公司頁揭露全球員工超過350人,研發及機構工程師團隊達一百多人;LinkedIn 顯示公司規模為201-500名員工,故本研究採「超過350人」作為較具體但仍需以公司最新年報確認的描述。主要股東名單基準日為2025年4月27日,前十大包括台新人壽保險股份有限公司3.00%、匯豐託管坎布里亞新興股東收益ETF 2.70%、鄒嘉駿1.85%、葉惠德1.69%、曾繼輝1.67%、瑞泉文嘉股份有限公司1.67%、三葉股份有限公司1.48%、林芳隆1.39%、隆華群資投資股份有限公司1.33%、張文杰1.21%。

Business

由田以機器視覺 Machine Vision 為核心,整合光學取像、CCD/鏡頭/光源、影像處理與演算法、機構設計、精密機械、運動控制、PLC/PC Base 控制等,提供自動光學檢測 AOI 設備及完整視覺檢測解決方案,取代人工目檢並提升製程良率。主要產品線包括印刷電路板 PCB 檢測設備、IC載板檢測設備、卷對卷檢測設備、LCD/LCM/OLED/觸控面板檢測設備、半導體自動光學檢測設備、COF檢測設備及其他檢測設備。MoneyDJ 引述公司資料指出,2024年產品營收結構約為 PCB/IC載板檢測系統39%、LCD檢測系統39%、半導體檢測設備17%,銷售地區為內銷32%、外銷68%。商業模式以專案型設備研發、製造、客製化整合、交機驗收與售後服務為主,營收認列受設備交期、客戶驗收進度與產業資本支出週期影響。主要客戶與終端應用涵蓋 IC載板、PCB、TFT-LCD、OLED/觸控面板、先進封裝與半導體檢測;公開資料列示客戶包括日月光、南電、景碩、富士康、欣興、友達、群創、京東方、天馬、華星光電、中電熊貓、惠科、TPK-KY、雅士等。近年半導體應用重點轉向 CoWoS/類CoWoS、RDL黃光製程檢測、Fan-out、Bumping、FOPLP面板級封裝、巨觀 OM 檢測、晶圓級與Unit形式檢測等,並由傳統面板/PCB設備廠逐步轉型為半導體檢測設備商。

Outlook 2025–2028

2025年主要成長動能來自半導體檢測設備轉型,公開新聞指出公司受惠半導體設備本土化、封測大廠 CoWoS 與類CoWoS 採購訂單、RDL黃光製程檢測、FOPLP 檢測設備與巨觀 OM 檢測設備訂單,並於平鎮廠進行擴廠,土木與機電工程金額合計約新台幣1.35億元。2025年8月報導指出,公司定調2025年為半導體營收元年,半導體營收占比預計近五成,首度超越載板、顯示器等原主要營收來源;2026年1月報導進一步稱2025年前三季半導體營收比重已達45%-55%,年成長逾100%,第三季毛利率約59.5%,半導體設備較高毛利有助抵銷面板與IC載板設備毛利率下滑。2026年展望方面,報導稱公司認為2026年營運將優於2025年,半導體營收有望倍增,因半導體設備交期約5-6個月,營收認列高峰可能落在2026年第二季之後,並預計打入三家晶圓客戶,代表產品由後段封裝向前段晶圓廠延伸。2027-2028年屬推估區間,若 AI/HPC 帶動先進封裝產能擴充、CoWoS/類CoWoS、FOPLP、RDL黃光檢測、晶圓級與面板級封裝檢測需求延續,由田有機會維持半導體設備占比提升、產品組合改善與毛利率支撐;同時 PCB/IC載板與面板景氣若復甦,可形成第二層動能。主要風險包括設備訂單與驗收遞延、半導體資本支出循環反轉、FOPLP量產速度不如預期、客戶集中與認證週期長、日韓中競爭者價格壓力、關鍵零組件交期與成本波動、匯率與中國市場需求波動、股價已先反映轉型題材而財報驗證落後等。

Supply Chain

Upstream
  • 電腦系統設備供應商 由田產品主要原料之一;公開資料僅揭露原料類別,未確認特定供應商,可能涵蓋工業電腦、控制主機與運算平台。
  • 線性滑軌及螺桿供應商 由田產品主要原料之一,用於精密機械與運動控制模組;公開資料未揭露特定供應商。
  • 燈源與攝影機供應商 由田產品主要原料之一,對應 AOI 光學取像系統;公開資料未揭露特定供應商,可能包含國內外光源、鏡頭、相機與影像擷取零組件廠。
  • PLC、運動控制與機電零組件供應商 由田 AOI 設備需整合電控系統、PLC、PC Base 控制與運動控制;此為依產品技術架構推定的上游類別,未確認特定供應商。
Downstream
  • 日月光投控 3711 IC載板與半導體先進封裝/封測檢測設備相關客戶;日月光為台股上市封測龍頭,公開資料列為 IC載板檢測設備客戶。
  • 南電 8046 IC載板檢測設備客戶;台股上市櫃 IC載板廠。
  • 景碩 3189 IC載板檢測設備客戶;台股上市櫃 IC載板廠。
  • 鴻海 / 富士康 2317 公開資料列為 IC載板與 PCB 檢測設備客戶;富士康為鴻海集團體系。
  • 欣興 3037 PCB 檢測設備客戶;台股上市 PCB/IC載板廠。
  • 友達 2409 TFT-LCD 檢測設備客戶;台股上市面板廠。
  • 群創 3481 TFT-LCD 與觸控面板檢測設備客戶;台股上市面板廠。
  • TPK-KY 3673 公開資料列為觸控面板檢測設備客戶,資料中稱 F-TPK;台股上市觸控模組廠。
  • 京東方 TFT-LCD 檢測設備客戶;中國大陸上市面板廠,非台股掛牌。
  • 天馬 TFT-LCD 檢測設備客戶;中國大陸上市面板廠,非台股掛牌。
  • 華星光電 TFT-LCD 檢測設備客戶;TCL集團旗下中國大陸面板廠,非台股掛牌。
  • 中電熊貓 TFT-LCD 檢測設備客戶;中國大陸面板廠,非台股掛牌。
  • 惠科 TFT-LCD 檢測設備客戶;中國大陸面板廠,非台股掛牌。

Competitors

  • 牧德 3563 台股上櫃 AOI/PCB 檢測與半導體相關設備同業;MoneyDJ 列為台灣競爭廠商,新聞亦列為先進封裝設備擴產受惠設備廠。
  • 聯策 6658 台股上櫃設備廠;MoneyDJ 列為台灣競爭廠商,亦被新聞列入半導體設備擴產鏈相關廠商。
  • 迅得 6438 台股上市自動化設備廠;新聞列為半導體設備訂單釋出與擴產受惠廠商,與由田在部分設備/自動化需求上具競合關係。
  • 群翊 6664 台股上櫃設備廠;新聞列為半導體設備訂單釋出與擴產受惠廠商,與由田同屬電子/半導體設備供應鏈。
  • Inspec 日本 AOI/檢測設備競爭廠商,非台股掛牌。
  • Shirai 日本檢測設備競爭廠商,非台股掛牌。
  • Takano 日本檢測設備競爭廠商,非台股掛牌。
  • Kubotek 日本檢測設備競爭廠商,非台股掛牌。
  • V-technology 日本顯示器/半導體相關檢測與製程設備廠,非台股掛牌。
  • ATI / Advanced Technology Inc. 韓國檢測設備競爭廠商,非台股掛牌。
  • Ajuhitek 韓國檢測設備競爭廠商,非台股掛牌。
  • 中導光電 中國大陸 AOI/檢測設備競爭廠商,非台股掛牌。
  • 南京協力 中國大陸檢測設備競爭廠商,非台股掛牌。
  • 武漢精測 中國大陸上市檢測設備競爭廠商,非台股掛牌。
Sources(16)

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.