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 3675 德微. Please read: https://finlab.finance/en/setup?stock=3675

No install, open FinLab Studio

3675

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

steady quality, premium valuation.

1 active signal
Revenue ≥20%
This page refreshes daily after the close. Add 德微 to your watchlist to track signal changes on your next visit.
Valuation 19Quality 72Growth 69Momentum 90Chips 49

Is 德微 a buy? Fundamentals and valuation first

  • Above-average profitability.Operating margin is in the 74th market percentile. Latest quarterly ROE ≈ 3.2%.

  • Valuation is high.PE is in the 91th market percentile; within its own history, PE is around the 98th percentile.

  • Foreign investors are net buying.Foreign 20-day net flow ≈ 0.3% of volume (net buy).

  • Strong revenue growth.Latest monthly revenue YoY ≈ 24.4%, 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 +0.58
BearishNeutralBullish

Single-sided accumulation, concentration rising — bullish

  • Single-sided accumulation, concentration rising — bullish
  • 台灣摩根士丹利 holds 1,288 lots
  • sellers have 1,962 lots left, ~200 sessions to clear

Window from 2026-01-17 · Price +115% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 台灣摩根士丹利 has accumulated 1,288 lots since the start (sold 10%), now trimming.
  • Main distributor 美林 peaked at 741 lots, has sold 42%, 431 left, ~14 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders +1.95pp, mid holders +3, retail -3.77pp — concentration shifting upward.
  • Foreign hedge-desk net short Net short -125 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
台灣摩根士丹利新加坡商瑞銀永豐金-敦南香港上海匯豐福勝元大-板橋三民
Distributing
美林摩根大通美商高盛富邦證券元大證券永豐金證券
Desks
own scale
國泰-板橋永豐金-內湖元大-樹林富邦-台北
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 台灣摩根士丹利 +1,288
    sold 10%
  • 新加坡商瑞銀 +597
    sold 8%· still adding
  • 永豐金-敦南 +284
    sold 10%
  • 香港上海匯豐 +180
    sold 0%
  • 福勝 +161
    sold 0%· still adding
  • 元大-板橋三民 +148
    sold 0%· still adding

Distributing

  • 美林 431 left
    sold 42%· ~14 sessions to clear
  • 摩根大通 470 left
    sold 34%· ~20 sessions to clear
  • 美商高盛 344 left
    sold 28%· ~98 sessions to clear
  • 富邦證券 199 left
    sold 47%· ~105 sessions to clear
  • 元大證券 64 left
    sold 76%· ~8 sessions to clear
  • 永豐金證券 179 left
    sold 27%· paused recently

Desks

  • 國泰-板橋 -221
    unclassified
  • 永豐金-內湖 -213
    unclassified
  • 元大-樹林 -176
    unclassified
  • 富邦-台北 -145
    unclassified
Still selling 1,962 lots ~200 sessions to bottom at most
Recent buy/sell force +1,045 absorbed / -1,157 sold sellers slightly ahead
Hedge-desk net short -29 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 24.41%

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

51 historical occurrences (since 2012-06-29)
Average forward return after Monthly revenue YoY ≥ 20% (from filing deadline)。20-day: Win 44.4%, Sample 45, Median -1.29%, Excess +1.19%, Beat mkt rate 40%；60-day: Win 53.3%, Sample 45, Median +0.57%, Excess +5.61%, Beat mkt rate 44.4%；120-day: Win 53.3%, Sample 45, Median +3.93%, Excess +6.69%, Beat mkt rate 40%

120 days after: historical avg +11.55%

20-day +2.08%
60-day +8.74%
120-day +11.55%
20-day
60-day
120-day
Win
44.4%
53.3%
53.3%
Sample
45
45
45
Median
-1.29%
+0.57%
+3.93%
Excess
+1.19%
+5.61%
+6.69%
Beat mkt rate
40%
44.4%
40%

Over 45 occurrences, 120-day forward avg gained 11.55%, beat the market by 6.69 pts; win rate 53.3%.

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 3Insufficient data
20-40 329+45.9% +33.6% 88.4% +18%
40-60 478+9.8% -9.9% 38.5% -7%
60-80 479+29.8% +19.6% 73.9% -2.2%
80-100 You are here653+64.8% +7.5% 55.4% +56.1%

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 ≈ 118.79, at the 98.0th 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
Insufficient data
(10d)
+0.6%
Win rate 43.4% Excess -3.9%
286d
Now
+23.4%
Win rate 61.8% Excess +13.8%
741d
60-day momentum down
+36.4%
Win rate 92.4% Excess +17.6%
145d
+11%
Win rate 54.5% Excess +0.6%
563d
+25.3%
Win rate 62.2% Excess +13.9%
315d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 741 historical days, 120-day forward avg gained 23.4%, win rate 61.8%, beat the market by 13.8%.

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.

23 times historically; 60-day forward avg +14.91%, win rate 59.1%, beating the market by +9.16 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.

37 times historically; 60-day forward avg +7.89%, win rate 48.6%, beating the market by +2.94 pts on average.

What does 德微 do? Company profile

半導體業；功率半導體分離式元件、二極體、晶圓 上櫃（櫃買中心）

Overview

德微科技股份有限公司成立於1995年8月16日，股票代號3675，為台灣上櫃普通股，英文名Eris Technology Corporation。公司總部位於新北市深坑區北深路三段155巷17號6樓，主要工廠包含桃園蘆竹廠。公司官網揭露董事長為張恩傑，實收資本額約新台幣5.31億元，營業項目為二極體、整流器、晶圓；公開資料亦顯示2012年6月29日上櫃。2024年年報載明總經理為張恩傑；2024年底員工合計539人，2025年3月31日為496人。主要股東名單截至2025年3月30日，元大商業銀行受託保管達爾科技Holdings UK持股27,925,357股、51.05%，張恩傑持股2.66%，台灣人壽1.73%，安聯台灣智慧基金專戶1.68%，安聯台灣大壩基金專戶1.28%等。公司早期以二極體晶圓貿易與代理起家，1998年引入德國SeCoS團隊後投入晶片結構設計，2003年起朝二極體專業製造商轉型；2018年併購亞昕科技進入上游晶圓製造供應鏈，2023至2024年完成達爾國際基隆晶圓製造業務與設備整合，並投資喜可士40%股權以強化品牌、客戶與通路。

Business

德微定位為專業分離式功率半導體供應商，核心產品包括蕭特基二極體、整流二極體、超快速整流二極體、穩壓二極體、高效率整流二極體、TVS瞬態抑制二極體、ESD、橋式二極體、MOSFET、SiC Schottky、晶圓與部分LED相關零組件。2024年年報營收結構為二極體及電晶體新台幣21.37857億元、占73.08%；晶圓7.21586億元、占24.66%；其他0.66211億元、占2.26%；合計29.25654億元。商業模式由早期晶圓貿易、二極體ODM與封裝測試，逐步往分離式元件IDM與垂直整合發展，透過上游晶圓製造、封裝測試、品質檢測與客製化設計服務客戶。主要用途為各類電子產品電源整流、電源保護與電源管理，應用於通訊、資訊、消費電子、汽車、航太、醫療、工控、綠能、AI伺服器與AI Edge裝置。2024年銷售區域以亞洲為主，MoneyDJ資料列示2024年台灣占34%、亞洲占65%、歐美洲占1%。年報揭露2024年A客戶占銷貨淨額36.95%、B客戶占14.52%，兩者皆為關係人但未具名；MoneyDJ提及高功率二極體已切入韓系Tyco及Semco等車用顯示器供應鏈；2026年媒體報導則提及德微受惠AI、工控、車用需求與供應鏈轉移，產品切入AI國際大廠供應鏈，並有日本電裝Denso等車用客戶青睞，但具體供貨品項與量產占比仍需以公司正式公告為準。

Outlook 2025–2028

2025至2028年展望可分為五個主軸。第一，功率半導體庫存循環修復：2026年工商時報/IEK轉載報導指出，全球功率元件歷經近三年庫存調整後，庫存回到較健康水位，AI、工控、車用需求同步升溫，德微產能利用率維持滿載，第一波擬向客戶調漲產品報價5%至10%，法人預估毛利率有望站穩四成、營收挑戰歷史新高；此屬媒體與法人預估，非公司財測。第二，AI電源與高壓大電流應用：報導與法說整理指出德微布局AI Server與AI Edge，產品如TVS、ESD、Low VF Bridge、Schottky、HVDC 800V相關元件，受惠AI CPU/GPU/NPU/MCU對瞬態保護、效率、低發熱與穩定電源的要求。第三，OOC與轉單效應：Nexperia事件及全球供應鏈去中化/非中供應鏈需求，可能使日本、韓國、歐美車用與工業客戶導入台灣供應商；但轉單具有事件性，長期仍取決於品質認證、交期、成本與客戶導入週期。第四，產品組合升級：公司年報已揭露從ESD、MOSFET、SiC Diode擴充到Thyristor、Transistor、Diode等產品，並規劃高功率MOSFET、閘流體等高附加價值產品；法說整理亦提及IGBT、軍規產品、低電容ESD、DFN與SLVGPP等新產品，若放量可提高毛利結構。第五，集團架構與亞昕科技：德微透過亞昕科技與基隆晶圓廠整合晶圓製造能力，並透過喜可士加強品牌與通路；2026年法說整理提及亞昕科技獨立IPO與中立晶圓代工平台的策略，有助於拓展外部客戶，但是否、何時完成仍需等待公司正式公告。主要風險包括二極體產業競爭激烈、成熟產品價格壓力、晶圓與封裝供應成本波動、車用與工控認證時間長、AI題材需求落地不確定、主要客戶集中且部分客戶未具名、關係人交易占比較高、匯率與地緣政治風險，以及高評價下營運不如預期的股價波動。

Supply Chain

Upstream
  • 亞昕科技股份有限公司 德微100%持有子公司，4吋/5吋晶圓廠為主，負責上游晶圓製造；未上市櫃。
  • 盧森堡商達爾國際股份有限公司基隆分公司晶圓製造業務 德微於2023年併購/受讓其晶圓製造業務與機台設備，強化4吋/6吋晶圓與高階晶圓能力；屬達爾/Diodes集團相關資產，非台股掛牌公司。
  • Diodes Incorporated／達爾科技集團 德微主要股東達爾科技Holdings UK持股逾五成，Diodes為美國上市公司，與德微具集團與供應鏈關係；非台股掛牌。
  • 晶圓供應商與封裝加工廠 年報揭露公司及子公司主要原料為晶圓，部分二極體封裝委外加工；公司未具名特定供應商，故不臆測台股代號。
Downstream
  • 喜可士股份有限公司 德微2023年以現金投資取得40%股權，業務包含自行研發分離元件產品銷售與電子零組件進出口買賣，可協助德微延伸至國內電子大廠、散熱元件客戶與AI高階運算伺服器ODM客戶；未上市櫃。
  • A客戶 2024年年報揭露A客戶銷貨金額新台幣10.81058億元、占36.95%，為關係人但未揭露名稱。
  • B客戶 2024年年報揭露B客戶銷貨金額新台幣4.24687億元、占14.52%，為關係人但未揭露名稱。
  • Tyco MoneyDJ資料提及德微高功率二極體切入韓系Tyco及Semco等車用顯示器供應鏈；非台股掛牌或未確認台股公司。
  • Semco MoneyDJ資料提及車用顯示器相關客戶；Samsung Electro-Mechanics為韓國上市公司，非台股掛牌。
  • Denso（日本電裝） 2026年媒體報導提及德微高階封裝相關車用產品獲日本電裝青睞；日本上市公司，非台股掛牌，實際供貨與量產細節未由公司正式公告完整揭露。
  • AI伺服器、工控、車用、通訊、消費電子、醫療、航太與綠能客戶 年報與公司官網列示主要終端應用領域，但多數客戶未具名；AI伺服器與AI Edge需求為2026年主要成長題材之一。

Competitors

  • 強茂 2481 台股上市公司，整流二極體、保護元件與功率半導體供應商，與德微在二極體與分離式元件領域競爭。
  • 台半 5425 台股上櫃公司，半導體整流元件與功率元件供應商；MoneyDJ列為國內競爭廠商之一。
  • 麗正 2302 台股上市公司，MoneyDJ列為國內二極體競爭廠商之一；產品與市場重疊程度需依各公司產品線確認。
  • 朋程 8255 台股上櫃公司，車用二極體/整流器與功率模組相關供應商，在車用功率元件市場具競爭關係。
  • Rohm 日本上市功率半導體與分離式元件大廠；非台股掛牌。
  • Vishay 美國上市分離式半導體與被動元件大廠；MoneyDJ列為全球整流二極體主要競爭者之一，非台股掛牌。
  • onsemi 美國上市功率半導體大廠；非台股掛牌。
  • STMicroelectronics 歐洲上市半導體大廠，功率與分離式元件產品線廣；非台股掛牌。
  • Diodes Incorporated 美國上市分離式、類比與功率元件公司；同時與德微具主要股東/集團關係，在全球產品市場亦可能存在產品線重疊，非台股掛牌。
  • Nexperia 荷蘭/中國聞泰科技旗下分離式元件大廠，2026年媒體報導提及其事件帶來轉單效應；非台股掛牌。
Sources（11）

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.