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3666

光耀 Optoelectronics As of 2026-06-17 Updated daily after market close

quality needs a look, fair valuation.

1 active signal
Revenue ≥20%
This page refreshes daily after the close. Add 光耀 to your watchlist to track signal changes on your next visit.
Valuation 30Quality 6Growth 87Momentum 32Chips 12

Is 光耀 a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 4th market percentile. Latest quarterly ROE ≈ -3.1%.

  • Valuation is neutral.PE is in the 70th market percentile; within its own history, PE is around the 55th percentile.

  • Foreign investors are net selling.Foreign 20-day net flow ≈ -4.3% of volume (net sell).

  • Strong revenue growth.Latest monthly revenue YoY ≈ 64.3%, above the 20% growth threshold.

  • Signals are active now.On the latest data, signals such as Revenue YoY ≥ 20% are active — see the historical forward returns after each occurrence below.

Chip flow

Bullish +0.50
BearishNeutralBullish

Single-sided accumulation, concentration rising — bullish

  • Single-sided accumulation, concentration rising — bullish
  • 華南永昌-南京 holds 650 lots
  • sellers have 141 lots left, ~40 sessions to clear

Window from 2026-01-17 · Price -13% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 華南永昌-南京 has accumulated 650 lots since the start (sold 0%), still adding.
  • Main distributor 國泰-板橋 peaked at 119 lots, has sold 27%, 87 left, ~35 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders +0.25pp, mid holders +2, retail -1.19pp — concentration shifting upward.
  • Foreign hedge-desk net short Net short -83 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
華南永昌-南京統一永豐金-南京凱基-敦北玉山證券大昌-新竹
Distributing
國泰-板橋國泰證券國泰-敦南統一-中壢台灣摩根士丹利台新-西松
Desks
own scale
兆豐證券元大-新盛永豐金-南投中國信託-忠孝
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 華南永昌-南京 +650
    sold 0%· still adding
  • 統一 +615
    sold 11%
  • 永豐金-南京 +383
    sold 0%· still adding
  • 凱基-敦北 +355
    sold 0%· still adding
  • 玉山證券 +95
    sold 0%· still adding
  • 大昌-新竹 +95
    sold 5%

Distributing

  • 國泰-板橋 87 left
    sold 27%· ~35 sessions to clear
  • 國泰證券 15 left
    sold 75%· paused recently
  • 國泰-敦南 25 left
    sold 40%· paused recently
  • 統一-中壢 26 left
    sold 35%· paused recently
  • 台灣摩根士丹利 6 left
    sold 81%· paused recently
  • 台新-西松 6 left
    sold 76%· ~6 sessions to clear

Desks

  • 兆豐證券 -701
    unclassified
  • 元大-新盛 -138
    unclassified
  • 永豐金-南投 -98
    unclassified
  • 中國信託-忠孝 -75
    unclassified
Still selling 141 lots ~40 sessions to bottom at most
Recent buy/sell force +454 absorbed / -57 sold buyers slightly ahead
Hedge-desk net short -18 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

Signals active now

These signals are true on the latest data, with this stock's own historical forward-return stats after each occurrence.

Monthly revenue YoY ≥ 20% (from filing deadline)

Active · now 64.27%

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

56 historical occurrences (since 2014-12-04)
Average forward return after Monthly revenue YoY ≥ 20% (from filing deadline)。20-day: Win 44.1%, Sample 34, Median -2.83%, Excess +1.78%, Beat mkt rate 38.2%；60-day: Win 35.3%, Sample 34, Median -6.68%, Excess -2.57%, Beat mkt rate 32.4%；120-day: Win 38.2%, Sample 34, Median -7.12%, Excess +7.04%, Beat mkt rate 23.5%

120 days after: historical avg +18.93%

20-day +2.71%
60-day +3.12%
120-day +18.93%
20-day
60-day
120-day
Win
44.1%
35.3%
38.2%
Sample
34
34
34
Median
-2.83%
-6.68%
-7.12%
Excess
+1.78%
-2.57%
+7.04%
Beat mkt rate
38.2%
32.4%
23.5%

Over 34 occurrences, 120-day forward avg gained 18.93%, beat the market by 7.04 pts; win rate 38.2%.

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 0Insufficient data
20-40 82+168.8% +161.1% 100% +128.2%
40-60 You are here15Insufficient data
60-80 151+112.2% +47.4% 51.7% +67.8%
80-100 117+84.1% +116.1% 70.9% +39.9%

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 ≈ 23.4, at the 54.6th percentile of its own history (40-60 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
Insufficient data
(16d)
Insufficient data
(8d)
+116.2%
Win rate 61.5% Excess +92.5%
174d
60-day momentum down
-19.2%
Win rate 3.6% Excess -27.4%
138d
Now
-43%
Win rate 0% Excess -45.1%
63d
+98%
Win rate 94.2% Excess +69.1%
86d

Currently in “Mid × 60-day momentum down”: across 63 historical days, 120-day forward avg declined 43%, win rate 0%, lagged the market by 45.1%.

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.

Does this signal hold up across the market

Over the past 242 months, on average ~404 stocks per month met “monthly revenue YoY ≥ 20%”; their adjusted-close return over the next 60 trading days averaged 6.94% (equal-weighted), beating the market by 2.37 points on average, and outperformed the TAIEX total-return index in 64.5% of months.

Each month, equal-weighted 60-day forward adjusted return of all signal-matching stocks, then averaged across months; excess vs the TAIEX total-return index.

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.

8 times historically; 60-day forward avg +12.04%, win rate 37.5%, beating the market by +3.07 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.

38 times historically; 60-day forward avg +8.96%, win rate 50%, beating the market by +4.56 pts on average.

What does 光耀 do? Company profile

光電業；LCD 背光模組光學膜／稜鏡片 櫃買中心上櫃

Overview

3666 為光耀科技股份有限公司，英文名 Optivision Technology Inc.，證券類型為上櫃普通股。公司成立於 2004/07/13，股票於 2014/12/04 在櫃買中心上櫃，總部及主要營運據點位於新竹科學園區新竹市力行六路 1 號 3 樓。董事長為黃宗元，總經理為何秉海。依 2025 年報截至 2026/04/30 資料，流通在外普通股 138,949,850 股，實收股本約新台幣 1,389,498,500 元；此數字高於部分舊版股市網站仍顯示的 58,945,850 股，應以年報與較新公司資料為準。員工規模依年報截至 2026/03/31 為 146 人，其中製造及作業 126 人、研發 7 人、業務及管理 13 人；2025 年底為 151 人。主要股東依年報基準日 2026/04/20 為佳峻投資 16.71%、元德投資 13.94%、黃宗元 5.08%、元翔國際開發 2.97%、曲苡雯 2.88%、鳳凰酒店 2.47%、欣義達 2.26%、黃造蓉 2.21%、黃鈴茹 2.21%、陳建富 2.12%。2025/09/09 元德投資及佳峻投資透過私募取得股份，成為大股東。

Business

光耀是專業光學膜研究、設計、開發、製造與銷售公司，主要產品為 TFT-LCD 背光模組用標準稜鏡片、增亮膜 BEF、多功能稜鏡片、整合型擴散稜鏡片、微結構光學擴散片、高輝度微結構擴散片、集光型逆稜鏡片等。產品功能是增加背光模組亮度、減少光能散失、調整可視角，應用於功能手機、智慧手機、平板、筆記型電腦、車載顯示器、工控與醫療級顯示器等。2025 年營收新台幣 475,422 仟元，年減 25.98%，稅後淨損 250,410 仟元，EPS -3.45 元。2025 年營收結構為中尺寸 91.66%、小尺寸 7.98%、其他 0.36%；銷售區域以外銷亞洲為主，2025 年外銷亞洲 96.56%。商業模式為向 PET 膜、UV 膠、保護膜等材料供應商採購，經塗佈、微結構成形、貼合與裁切等製程，供應 TFT-LCD 面板廠、背光模組廠及裁切廠；年報列示其為群創、友達、京東方、天馬、龍騰、華星光電、惠科等面板廠，以及中光電、瑞儀、京東方、三協、達運、燦曜、璨宇、博晶等背光模組廠之認證合格廠商。2024 年公司自行統計市占率約為手機用 LCD 稜鏡片 0.52%、平板 5.9%、車載 6.6%、筆電 22.2%；因 AMOLED/OLED 侵蝕手機市場，公司自 2023 年起逐步退出智慧手機市場，營運重心移向筆電、車載與高階應用。

Outlook 2025–2028

2025 年營運基調偏弱，主因全球消費性電子需求保守、手機與筆電主要應用缺乏突破性終端產品、通膨推升原材料與人工成本，加上 LCD 光學膜面臨 OLED/AMOLED 替代與中國同業削價競爭。2026 年公司明確以輕資產、重研發、談夥伴為主軸，聚焦車載顯示、高階筆電、高效率與環保型光學膜，並優化成本結構。具體動能包括：一、車載顯示器用高輝度、大視角、低收縮率、抗 UV 黃化、耐高低溫震動及高增益複合型稜鏡片，爭取高階車載與陸系品牌車載機種導入；二、高階筆電用高輝度、薄型化、高解析度與窄視角產品，提升附加價值；三、增亮膜及擴散膜導入 PET 材料、導入具競爭力新供應商，改善材料性價比；四、無 VOC 光學微結構擴散膜已於高階筆電量產，未來推向平板與車載；五、與材料供應商及客戶合作回收再生材料驗證，因應碳中和與客戶永續要求；六、深化中國大陸市場，除寧波子公司外，策略結盟成立揚州公司以改善原經營模式並尋求獲利契機。2027-2028 展望屬推估：若車載、高階筆電、MiniLED 或新世代顯示用光學膜導入順利，毛利率與產品組合有機會改善；但 OLED 面板持續滲透平板、車載與筆電，中國大陸廠商技術追趕與價格競爭、終端需求波動、材料成本、客戶驗證時程、產能利用率偏低及公司持續虧損，仍是主要挑戰。公司亦提及在穩健核心事業下評估與優質夥伴參與營建與不動產開發相關投資，以活化資金與資產配置，此部分與本業綜效尚不明確，需持續追蹤。

Supply Chain

Upstream
  • HANMARK UV 膠供應商；年報列為主要供應商之一，非台股上市櫃公司或未確認台股掛牌。
  • KOLON PET 膜供應商；韓國企業，非台股上市櫃。
  • SK microworks PET 膜供應商；韓國企業，非台股上市櫃。
  • 張家港康得新 PET 膜供應商；中國大陸企業，非台股上市櫃；2025 年報提及 2025 年引進其 PET。
  • 台灣積水 正面保護膜與背面保護膜供應商；未確認為台股上市櫃。
  • 科揚 正面保護膜與背面保護膜供應商；2025 年度第一大供應商，未確認為台股上市櫃。
  • 奇陽 背面保護膜供應商；未確認為台股上市櫃。
Downstream
  • 中強光電 5371 背光模組廠；年報列為主要背光模組廠及公司認證合格合作對象之一。
  • 瑞儀光電 6176 背光模組廠；年報列為主要背光模組廠及公司認證合格合作對象之一。
  • 達運精密 6120 背光模組相關廠；年報列為主要背光模組廠及公司認證合格合作對象之一。
  • 群創光電 3481 TFT-LCD 面板廠；年報列為認證合格合作對象之一，MoneyDJ 亦稱其為光耀主要大客戶。
  • 友達光電 2409 TFT-LCD 面板廠；年報列為認證合格合作對象之一。
  • 京東方 中國大陸面板與顯示供應鏈企業，非台股上市櫃；年報列為面板廠及背光模組相關客戶/合作對象之一。
  • 天馬 中國大陸面板廠，非台股上市櫃；年報列為認證合格合作對象之一。
  • 龍騰 中國大陸面板廠，非台股上市櫃；年報列為認證合格合作對象之一。
  • 華星光電 中國大陸面板廠，非台股上市櫃；年報列為認證合格合作對象之一，名稱不應與台股華星光 4979 混同。
  • 惠科 中國大陸面板廠，非台股上市櫃；年報列為認證合格合作對象之一。

Competitors

  • 友輝光電 4933 台股上櫃光電業，主要業務為 LCD 背光模組零組件聚光片；年報列為台灣稜鏡片競爭同業。
  • 3M 美國上市公司，為光學膜/聚光片國際競爭者；非台股上市櫃。
  • LMS 韓國稜鏡片競爭者；非台股上市櫃。
  • LGE 韓國系競爭者；年報列為華東中尺寸稜鏡片競爭者之一，非台股上市櫃。
  • 康得新 中國大陸光學膜/材料競爭者與 PET 來源之一，非台股上市櫃。
  • 聚飛 中國大陸稜鏡片競爭者，非台股上市櫃。
  • 激智 中國大陸稜鏡片競爭者，非台股上市櫃。
  • 維奇 中國大陸稜鏡片競爭者，非台股上市櫃。
  • 樂凱 中國大陸稜鏡片競爭者，非台股上市櫃。
  • 光志 中國大陸稜鏡片競爭者，非台股上市櫃。
Sources（10）

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.