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6588

東典光電 Communications & Internet As of 2026-06-17 Updated daily after market close

quality needs a look, premium valuation.

1 active signal
Revenue ≥20%
This page refreshes daily after the close. Add 東典光電 to your watchlist to track signal changes on your next visit.
Valuation 11Quality 22Growth 96Momentum 64Chips 29

Is 東典光電 a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 23th market percentile. Latest quarterly ROE ≈ -0.3%.

  • Valuation is high.PE is in the 95th market percentile.

  • Foreign investors are net selling.Foreign 20-day net flow ≈ -1.3% of volume (net sell).

  • Strong revenue growth.Latest monthly revenue YoY ≈ 160.0%, 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

Bearish -0.48
BearishNeutralBullish

Distribution to retail — bearish

  • Distribution to retail — bearish
  • 永豐金-台中 holds 323 lots
  • sellers have 277 lots left, ~490 sessions to clear

Window from 2026-01-17 · Price +118% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 永豐金-台中 has accumulated 323 lots since the start (sold 0%), still adding.
  • Main distributor 富邦-仁愛 peaked at 708 lots, has sold 45%, 388 left, paused recently.
  • TDCC big holders (absolute) >1000-lot holders -9.27pp, mid holders -5, retail +15.65pp — drifting down to retail.
  • Foreign hedge-desk net short Net short -300 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
永豐金-台中國泰-敦南國泰-台中元大-北屯元富-大昌永豐金-板新
Distributing
富邦-仁愛新加坡商瑞銀永豐金-敦北台新-桃園統一-南京統一-士林
Desks
own scale
兆豐證券台中銀-高雄元富德信-和平
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 永豐金-台中 +323
    sold 0%· still adding
  • 國泰-敦南 +261
    sold 0%· still adding
  • 國泰-台中 +211
    sold 3%
  • 元大-北屯 +204
    sold 0%· still adding
  • 元富-大昌 +171
    sold 0%
  • 永豐金-板新 +159
    sold 2%· still adding

Distributing

  • 富邦-仁愛 388 left
    sold 45%· paused recently
  • 新加坡商瑞銀 66 left
    sold 85%· ~13 sessions to clear
  • 永豐金-敦北 29 left
    sold 87%· paused recently
  • 台新-桃園 19 left
    sold 85%· paused recently
  • 統一-南京 77 left
    sold 37%· paused recently
  • 統一-士林 14 left
    sold 88%· paused recently

Desks

  • 兆豐證券 -1,083
    unclassified
  • 台中銀-高雄 -966
    unclassified
  • 元富 -955
    unclassified
  • 德信-和平 -550
    unclassified
Still selling 277 lots ~490 sessions to bottom at most
Recent buy/sell force +388 absorbed / -206 sold buyers slightly ahead
Hedge-desk net short -187 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)

Weak direction: big-holder share fell while retail share rose.

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 159.98%

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

45 historical occurrences (since 2020-07-01)
Average forward return after Monthly revenue YoY ≥ 20% (from filing deadline)。20-day: Win 31.6%, Sample 19, Median -2.47%, Excess -6.82%, Beat mkt rate 26.3%；60-day: Win 29.4%, Sample 17, Median -7.22%, Excess -8.44%, Beat mkt rate 35.3%；120-day: Win 31.2%, Sample 16, Median -18.46%, Excess +6.21%, Beat mkt rate 18.8%

120 days after: historical avg +15.01%

20-day -5%
60-day -4.79%
120-day +15.01%
20-day
60-day
120-day
Win
31.6%
29.4%
31.2%
Sample
19
17
16
Median
-2.47%
-7.22%
-18.46%
Excess
-6.82%
-8.44%
+6.21%
Beat mkt rate
26.3%
35.3%
18.8%

Over 16 occurrences, 120-day forward avg gained 15.01%, beat the market by 6.21 pts; win rate 31.2%.

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 +30.48%, win rate 28.6%, beating the market by +20.63 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.

9 times historically; 60-day forward avg +18.46%, win rate 25%, beating the market by +6.15 pts on average.

What does 東典光電 do? Company profile

通信網路業 櫃買中心上櫃

Overview

6588 對應證券為東典光電科技股份有限公司普通股，市場別為上櫃，非 ETF、ETN、特別股或權證。公司成立於 2000-05-15，總部位於宜蘭縣五結鄉利工一路二段70號，董事長為孫正強，總經理為蘇立群，2020-07-01 上櫃掛牌。公司英文簡稱 EOC，官網揭露資本額為新台幣347,008,250元，主要產品為光通訊薄膜濾光片。2025年度合併財報顯示年底股本為新台幣347,008千元、資產總額1,193,951千元、歸屬母公司業主權益765,209千元；2025年度營收173,202千元、營業淨損62,376千元、稅前淨損67,821千元、歸屬母公司淨損61,311千元、EPS為-1.77元。2023年度官方財報揭露員工人數101人；2025法說摘要來源稱員工人數約86人，但仍以官方年報或財報可查數字為準。主要股東方面，2024公開說明書揭露東南實業股份有限公司持有9,316,297股、持股34.89%，但後續現金增資後最新持股比率需以公開資訊觀測站最新股東名簿確認。

Business

東典光電以光學鍍膜技術為核心，主要從事光通訊薄膜濾光片、客製化光學濾光片與光學元件鍍膜開發製造；公司定位屬光通訊元件上游，產品用於光通訊主動元件、被動元件、雲端資料中心傳輸模組，以及其他客製化濾光片。2025年度營收結構為濾光片130,398千元、約75.29%；物聯網商品42,804千元、約24.71%，顯示公司已透過麥樂斯科技等投資或併購切入通訊網路與物聯網商品。2025年度銷售地區以中國大陸107,777千元為最大，占約62.23%，其次香港32,904千元、約19.00%，南韓11,122千元、約6.42%，台灣6,963千元、約4.02%，斯洛伐克6,834千元、約3.95%，其他國家7,602千元、約4.39%。公司收入認列以產品交付、控制權移轉為主；客戶多為光通訊、網通與科技產業客戶，官方財報未揭露實際客戶名稱，僅揭露2025年底應收帳款餘額73%由4家客戶組成，存在客戶集中度風險。

Outlook 2025–2028

2025至2028年展望可分為三條主線：第一，AI資料中心、高速運算、雲端服務與電信升級帶動高速光通訊與分波多工需求，對DWDM、CWDM、高階濾光片、小型化傳輸模組濾片與資料中心用濾光片形成中長期需求支撐。第二，公司短期開發方向包括雲端機房小型化傳輸模組高階濾片、AI數據中心傳輸用濾光片、生醫檢測用光學濾光片與光學元件鍍膜代工；中長期方向包括6G Network濾光片、生醫螢光濾光片、半導體元件鍍膜代工、CPO/LPO元件、機器視覺光學機構與環境偵測光學元件。第三，2025年已出現產品組合調整：濾光片仍為主力，但物聯網商品貢獻約四分之一營收；轉投資包含麥樂斯科技、東凱先進科技、雷大光電、東峰先進科技與科沃斯先進，顯示公司嘗試由單一濾光片供應商向光學、網通、AI、雷射、半導體材料或化學製造等多技術整合方向移動。主要風險包括公司2024與2025仍為虧損、固定資產占資產比重高且有減損評估壓力、存貨因科技快速變遷可能呆滯、應收帳款集中於少數客戶、上游主要供應商集中、外銷比重高導致匯率風險，以及高階光通訊產品規格快速演進造成設備與研發投入壓力。2026至2028若AI資料中心與800G/1.6T光模組、CPO/LPO、矽光子及低軌衛星通訊需求持續放大，東典有機會受惠；但是否轉為穩定獲利仍取決於新產品驗證、產能良率、客戶導入速度與物聯網商品毛利改善。

Supply Chain

Upstream
  • 玻璃基板供應商 東典公開說明書揭露主要原料包含玻璃基板，但未揭露具名供應商；屬光學濾光片基材上游。
  • 金屬靶材與鍍膜材料供應商 東典公開說明書揭露主要原料包含金屬靶材，並表示向國內外多家供應商採購；具名供應商未公開。
  • 鍍膜、後加工與高精密量測設備供應商 高階薄膜濾光片需鍍膜、冷加工與量測設備；公司規劃提高研發費用並與其他廠商共同研發設備，具名供應商未公開。
Downstream
  • 光通訊模組與光通訊設備客戶 東典產品供國內外客戶光通訊產品應用，終端涵蓋雲端資料中心、電信網路、5G、FTTx、WDM模組等；官方未揭露實際客戶名稱。
  • 雲端服務商、網路內容服務商與資料中心終端需求 多數屬間接終端應用需求來源，AI資料中心與高速運算帶動高階濾光片需求；非公司已公開具名直接客戶。
  • 麥樂斯科技股份有限公司 東典2025年合併財報揭露持股75.84%子公司，主要營業項目為通訊網路之貿易買賣，涉及路由器、物聯網等無線通訊產品業務，未上市櫃。

Competitors

  • 統新光訊股份有限公司 6426 台股上市公司，與東典同為光通訊與精密光學用薄膜濾光片、TFF、DWDM相關光學鍍膜元件廠商。
  • Coherent Corp. 美國上市公司，原II-VI，為全球光通訊與光學元件供應商；東典公開說明書列為國外競爭廠商。
  • Iridian Spectral Technologies 加拿大光學濾光片廠商，非台股掛牌；東典公開說明書列為國外競爭廠商。
Sources（14）

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.