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Help me set up FinLab and analyze 3363 上詮. Please read: https://finlab.finance/en/setup?stock=3363

3363

上詮 Communications & Internet 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 上詮 to your watchlist to track signal changes on your next visit.
Valuation 5Quality 7Growth 9Momentum 54Chips 21

Is 上詮 a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 6th market percentile. Latest quarterly ROE ≈ -2.6%.

  • Valuation is high.PE is in the 100th market percentile; within its own history, PE is around the 98th percentile.

  • Foreign investors are net selling.Foreign 20-day net flow ≈ -2.4% of volume (net sell).

Chip flow

Bearish -0.52
BearishNeutralBullish

Distribution to retail — bearish

  • Distribution to retail — bearish
  • 永豐金證券 holds 1,024 lots
  • sellers have 1,319 lots left, ~86 sessions to clear

Window from 2026-01-17 · Price +70% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 永豐金證券 has accumulated 1,024 lots since the start (sold 12%), still adding.
  • Main distributor 台灣摩根士丹利 peaked at 1,585 lots, has sold 69%, 497 left, ~17 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders -2.60pp, mid holders -1, retail +3.79pp — drifting down to retail.
  • Foreign hedge-desk net short Net short -2,957 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
永豐金證券香港上海匯豐統一-仁愛國泰-敦南元大-龍潭新光
Distributing
台灣摩根士丹利新加坡商瑞銀元大-忠孝鼎富台新證券港商野村國票-敦北法人
Desks
own scale
美商高盛摩根大通美林元大-新竹經國
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 永豐金證券 +1,024
    sold 12%· still adding
  • 香港上海匯豐 +374
    sold 0%
  • 統一-仁愛 +349
    sold 16%
  • 國泰-敦南 +198
    sold 16%· still adding
  • 元大-龍潭 +189
    sold 18%· still adding
  • 新光 +131
    sold 0%· still adding

Distributing

  • 台灣摩根士丹利 497 left
    sold 69%· ~17 sessions to clear
  • 新加坡商瑞銀 300 left
    sold 62%· ~54 sessions to clear
  • 元大-忠孝鼎富 76 left
    sold 83%· paused recently
  • 台新證券 260 left
    sold 33%· paused recently
  • 港商野村 57 left
    sold 84%· paused recently
  • 國票-敦北法人 106 left
    sold 63%· paused recently

Desks

  • 美商高盛 -1,461
    hedge desk · will cover
  • 摩根大通 -650
    hedge desk · will cover
  • 美林 -521
    hedge desk · will cover
  • 元大-新竹經國 -414
    unclassified
Still selling 1,319 lots ~86 sessions to bottom at most
Recent buy/sell force +1,039 absorbed / -690 sold buyers slightly ahead
Hedge-desk net short -2,680 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

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)
0-20 361+47% +6% 57.9% +29.1%
20-40 113-17.9% -20.5% 13.3% -54.1%
40-60 387-0.1% -5.6% 45.7% -8.1%
60-80 355+59.5% +15.5% 77.7% +41%
80-100 You are here815+143.9% +9% 59.3% +118%

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 ≈ 5331.25, at the 97.6th 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
-10.7%
Win rate 19.4% Excess -20.5%
134d
-8.1%
Win rate 26.7% Excess -12.9%
206d
Now
+86.8%
Win rate 61.9% Excess +69.5%
777d
60-day momentum down
-2.4%
Win rate 30.6% Excess -6.3%
324d
+5.2%
Win rate 42.3% Excess -5.4%
298d
+53.1%
Win rate 75.2% Excess +42.6%
412d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 777 historical days, 120-day forward avg gained 86.8%, win rate 61.9%, beat the market by 69.5%.

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.

21 times historically; 60-day forward avg +22.85%, win rate 70%, beating the market by +14.09 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).

69 times historically; 60-day forward avg +12.7%, win rate 59.7%, beating the market by +7.43 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.

56 times historically; 60-day forward avg +11.88%, win rate 63%, beating the market by +7.62 pts on average.

What does 上詮 do? Company profile

通信網路業 上櫃

Overview

3363 對應證券為上詮,為櫃買中心上櫃普通股,非 ETF、ETN、權證或特別股。公司成立於 1995 年 6 月 14 日,總部位於新竹市科學工業園區展業二路十八號,統一編號 84149462;上櫃日期為 2011 年 2 月 25 日。董事長為林松福,總經理為胡頂達。公開資料顯示 2026 年前後實收資本額約新台幣 11.36 億元、已發行普通股約 113,640,567 股;公司 2024 年報刊印日 2025 年 3 月 25 日員工數為 863 人,2024 年底為 648 人。公司關係企業包含 FIOPTEC INC.、上海上詮電信科技有限公司、江西上詮通信科技有限公司、中山上詮通信科技有限公司等,主要涵蓋投資控股與光通訊業務。年報揭露董事法人股東美好實業股份有限公司,其主要股東包含尚鏵股份有限公司、台灣苯乙烯工業股份有限公司等;完整前十大股東需以公開資訊觀測站/公司最新股東專欄為準。

Business

上詮主要從事光纖通信相關產品之研發、設計、製造與銷售,為國內早期投入光纖熔燒 FBT 與平面光波導 PLC 相關產品研製的廠商之一。主要產品包括光纖被動元件、光纖跳接線、光纖連接器、光纖耦合器、光分歧器、波長多工器、光隔離器、光循環器、準直器、固定/可調式衰減器、光收發模組、AOC 主動式光纜、光纖陣列 FA/FAU、矽光封裝 SiPh package 與 Co-Packaged Optics 相關模組。2024 年營收結構為:光纖跳接線約新台幣 10.502 億元、占 77.00%;光纖耦合產品約 0.688 億元、占 5.05%;光纖連結器約 0.569 億元、占 4.17%;其他光纖被動元件約 0.882 億元、占 6.47%;微光學光纖元件約 0.444 億元、占 3.26%;其他約 0.447 億元、占 3.28%;租賃收入約 0.105 億元、占 0.77%。地區別方面,2024 年外銷美洲約占 77.77%,內銷約 12.16%,中國大陸約 3.06%,其他地區約 7.01%。商業模式以 OEM/ODM、客製化光纖被動元件與整合模組供應為主,客戶多為國內外光纖通訊模組製造商、光纖通訊設備製造商、經銷商與高階資料中心/半導體封裝相關客戶。2024 年最大客戶以匿名 C 公司揭露,銷售占比約 71.56%,顯示客戶集中度高。

Outlook 2025–2028

2025 至 2028 年的核心展望在於 AI 資料中心頻寬升級、3.2T 以上高階資料傳輸、矽光子與 CPO 共同封裝光學的商業化。公司年報指出,光通訊應用正由可插拔式光模組逐步往系統端與 CPO 發展,CPO 可降低功耗、提升熱效率並縮小尺寸;公司已推出符合半導體封裝環境需求的光纖陣列連接器產品,2024 年成功試產,並與國際級客戶討論量產時程。2025 年公開報導指出,公司預期矽光產品於 2025 年完成驗證後小量出貨,2026 年起放量生產;公司也規劃擴建無塵室、增加設備投資、導入產線數位化與智能化,並依客戶需求評估第三地生產基地。2026 至 2028 年產業面若 AI 光學互連與 CPO 採用率提高,上詮的 FA/FAU、ReLFACon、保偏光纖陣列與矽光封裝能力可能成為主要成長動能;外部券商與媒體亦將 2026 年視為 CPO 起飛關鍵年,並看好 2027 至 2028 年 AI 光學互連需求擴大。主要風險包括:CPO 量產時程延後、客戶驗證不如預期、最大客戶集中度過高、產品良率與自動化進度、台灣人力成本與人才競爭、廠房與無塵室投資壓力、匯率變動、地緣政治造成供應鏈遷移,以及中國大陸生產環境與美中科技管制變化。

Supply Chain

Upstream
  • US Conec 年報列為光纖被動元件主要供應商,非台股掛牌公司。
  • Senko 年報列為光纖被動元件與 SiPh 元件供應商,非台股掛牌公司。
  • Corning 年報列為光纖、光纜與光學元件供應商,美國上市公司,非台股掛牌。
  • 統新光訊 6426 年報列為光學元件供應商,為台股上櫃公司。
  • 鴻海精密 2317 年報列為金屬車件、彈片、陶瓷套頭等其他零組件供應商之一,為台股上市公司。
  • Broadcom 年報列為光主動產品元件供應商,美國上市公司,非台股掛牌。
  • Coherent / II-VI 年報列為光主動產品元件供應商,美國上市公司,非台股掛牌。
  • MACOM 年報列為光主動產品元件供應商,美國上市公司,非台股掛牌。
  • 奇景光電 年報列為 SiPh 元件供應商;奇景光電為美國掛牌公司,非台股掛牌。
Downstream
  • 匿名 C 公司 2024 年報揭露為最大銷貨客戶但未公布名稱,2024 年銷售占比約 71.56%;無法確認是否為台股公司。
  • 國內外光纖通訊模組製造商 年報描述之主要銷售對象類型,含非上市與海外公司,未逐一揭露名稱。
  • 國內外光纖通訊設備製造商 年報描述之主要銷售對象類型,產品用於通訊設備、資料中心與高速傳輸。
  • Verizon 年報指出部分產品通過 Telcordia GR-326 認證,成為北美電信營運商 Verizon 佈建通訊設備所需光纖通訊被動元件的少數合格供應商之一;Verizon 為美國上市公司,非台股掛牌。
  • 台積電 2330 媒體與法人報導將其列為矽光子/CPO 生態系重要關聯公司;公司年報僅稱深化與半導體大廠及國際級客戶合作,未直接官方揭露台積電為客戶。
  • NVIDIA 媒體與法人報導將其列為 AI/CPO 終端需求與潛在生態系關聯公司;NVIDIA 為美國上市公司,非台股掛牌,且非公司年報直接揭露客戶。

Competitors

  • 波若威 3163 台股上櫃光通訊與網通零組件廠,於光纖連接、資料中心高速傳輸供應鏈具競爭/比較關係。
  • 光聖 6442 台股上市光通訊元件與資料中心光通訊供應鏈公司,屬高階光通訊/CPO 題材同業比較標的。
  • 華星光 4979 台股上櫃光通訊模組與收發器相關廠商,終端應用與資料中心需求具重疊。
  • 聯亞 3081 台股上櫃光通訊磊晶/雷射相關公司,位於光通訊上游但常被列為矽光子與高速光通訊同業比較。
  • 眾達-KY 4977 台股上市光通訊收發模組廠,於高速資料中心光模組市場具同業比較關係。
  • 前鼎 4908 台股上櫃光通訊設備與光模組相關公司,屬光通訊產業同業。
  • 訊芯-KY 6451 台股上市半導體封裝與光通訊封裝相關公司,於矽光子/光通訊封裝議題具部分競爭或供應鏈比較關係。
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.