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8109

博大 Electronic Components As of 2026-06-17 Updated daily after market close

strong quality, fair valuation.

1 active signal
Revenue ≥20%
This page refreshes daily after the close. Add 博大 to your watchlist to track signal changes on your next visit.
Valuation 51Quality 90Growth 67Momentum 73Chips 24

Is 博大 a buy? Fundamentals and valuation first

  • Top-tier profitability.Operating margin beats ~96% of the market. Latest quarterly ROE ≈ 4.8%.

  • Valuation is neutral.PE is in the 41th market percentile; within its own history, PE is around the 97th percentile.

  • Foreign investors are net selling.Foreign 20-day net flow ≈ -1.8% of volume (net sell).

  • Strong revenue growth.Latest monthly revenue YoY ≈ 22.7%, 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

Neutral -0.07
BearishNeutralBullish

Institutional rotation, concentration steady — neutral

  • Institutional rotation, concentration steady — neutral
  • 凱基-中港 holds 888 lots
  • sellers have 204 lots left, ~180 sessions to clear

Window from 2026-01-17 · Price +8% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 凱基-中港 has accumulated 888 lots since the start (sold 0%), still adding.
  • Main distributor 永豐金-板新 peaked at 289 lots, has sold 62%, 111 left, ~7 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders -1.63pp, mid holders +1, retail -0.45pp — little change.
  • Foreign hedge-desk net short Net short -95 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
凱基-中港台灣摩根士丹利統一-台中華南永昌中國信託港商麥格理
Distributing
永豐金-板新新加坡商瑞銀元大證券富邦-台中元大-小港國票-南科
Desks
own scale
美林凱基兆豐-台中港國票-台東
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 凱基-中港 +888
    sold 0%· still adding
  • 台灣摩根士丹利 +813
    sold 9%· still adding
  • 統一-台中 +273
    sold 0%· still adding
  • 華南永昌 +207
    sold 0%· still adding
  • 中國信託 +116
    sold 0%· still adding
  • 港商麥格理 +114
    sold 0%

Distributing

  • 永豐金-板新 111 left
    sold 62%· ~7 sessions to clear
  • 新加坡商瑞銀 141 left
    sold 42%· paused recently
  • 元大證券 169 left
    sold 26%· paused recently
  • 富邦-台中 36 left
    sold 36%· ~180 sessions to clear
  • 元大-小港 24 left
    sold 37%· paused recently
  • 國票-南科 20 left
    sold 47%· paused recently

Desks

  • 美林 -247
    hedge desk · will cover
  • 凱基 -209
    unclassified
  • 兆豐-台中港 -136
    unclassified
  • 國票-台東 -129
    unclassified
Still selling 204 lots ~180 sessions to bottom at most
Recent buy/sell force +484 absorbed / -194 sold buyers slightly ahead
Hedge-desk net short -24 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)

Mixed direction: big-holder and retail changes are not aligned.

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 22.72%

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

70 historical occurrences (since 2007-04-23)
Average forward return after Monthly revenue YoY ≥ 20% (from filing deadline)。20-day: Win 51.8%, Sample 56, Median +0.23%, Excess +0.43%, Beat mkt rate 44.6%；60-day: Win 72.2%, Sample 54, Median +4.06%, Excess +2.48%, Beat mkt rate 48.1%；120-day: Win 80.8%, Sample 52, Median +10.33%, Excess +5.49%, Beat mkt rate 61.5%

120 days after: historical avg +13.12%

20-day +1.54%
60-day +7.63%
120-day +13.12%
20-day
60-day
120-day
Win
51.8%
72.2%
80.8%
Sample
56
54
52
Median
+0.23%
+4.06%
+10.33%
Excess
+0.43%
+2.48%
+5.49%
Beat mkt rate
44.6%
48.1%
61.5%

Over 52 occurrences, 120-day forward avg gained 13.12%, beat the market by 5.49 pts; win rate 80.8%.

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)
0-20 420+13.8% +14.7% 85.5% -12.2%
20-40 876+8.9% +6.9% 62.7% -9.9%
40-60 529+21.5% +21.1% 81.3% +8.1%
60-80 722+23.6% +21.6% 89.6% +15.6%
80-100 You are here496+18.9% +15.4% 98.8% -1.1%

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 ≈ 18.69, at the 96.8th 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
+6.9%
Win rate 65.4% Excess -2.2%
509d
+13.3%
Win rate 81.1% Excess +8.5%
650d
Now
+7.2%
Win rate 73.9% Excess -1.3%
898d
60-day momentum down
+6.3%
Win rate 68.2% Excess -1.8%
471d
+10.1%
Win rate 80.1% Excess -1%
407d
+7.2%
Win rate 83.3% Excess -5.6%
228d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 898 historical days, 120-day forward avg gained 7.2%, win rate 73.9%, lagged the market by 1.3%.

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.

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.

43 times historically; 60-day forward avg +2.79%, win rate 64.3%, beating the market by +0.62 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 +4.93%, win rate 65.5%, beating the market by +0.31 pts on average.

What does 博大 do? Company profile

電子零組件業；利基型電源供應器／電源轉換器 上櫃

Overview

8109 對應櫃買中心上櫃公司博大科技股份有限公司，英文全名 P-DUKE Technology Co., Ltd.，普通股，每股面額新台幣10元。公司成立於1992年6月16日，公開發行日為2001年6月28日，興櫃日為2003年1月27日，上櫃日為2005年3月22日。總部與主要廠址位於台中市南屯區工業區22路36號。董事長與總經理均為廖本崇，發言人為吳忠原。實收資本額為821,612,360元，已發行普通股82,161,236股，無特別股。2026年3月31日合併員工565人，平均年齡39.64歲，平均年資9.87年；2025年底員工523人。2026年3月30日前十大股東包括廖本崇7.39%、陳連興7.25%、蔡正大4.65%、博紳投資3.54%、喬福機械2.73%、陳桂香2.70%、張宏豪1.49%、張宏愷1.48%、楊德華1.40%、蔡妙珍1.34%。2025年度董事會決議配發每股現金股利4元及資本公積現金0.5元，合計每股4.5元。

Business

博大是以自有品牌 P-DUKE 為主的利基型交換式電源供應器廠，核心業務為 AC/DC 電源供應器、DC/DC 電源轉換器、客製化電源解決方案及相關系統產品設計、製造、OEM/ODM 與銷售。2025年合併營收1,742,551千元，年增15.04%；其中電源供應器收入1,713,649千元，占98.34%，其他收入28,902千元，占1.66%。2025年毛利860,353千元，稅後淨利508,006千元，EPS 6.18元，稅後淨利年減4.53%，主要受匯率與業外收益變動影響。產品用途涵蓋資訊、通訊、工業量測、工業控制、高階工業、交通運輸、醫療、國防、航空、新能源、儲能、精密儀器等。公司產品特色為少量多樣、高可靠度、寬輸入電壓、高功率密度、低雜訊、高絕緣、耐候與國際安規認證；鐵道產品涵蓋3W至300W DC/DC，通過EN 50155/EN45545-2等標準；醫療電源涵蓋1W至60W DC/DC與15W至450W AC/DC，並具IEC/EN 60601-1等認證。商業模式上，公司透過全球代理商、OEM/終端客戶、DigiKey與Chip1Stop等電子零件電商平台、官網SEO與專業媒體推廣自有品牌。年報揭露2025年客戶集中度高，客戶A占營收51.42%，客戶B占10.09%，客戶名稱因契約未揭露；區域上歐洲仍是主要市場，其次為大中華、泛亞洲與美洲。

Outlook 2025–2028

2025年公司營收自2024年低基期回升，全年營收17.43億元、年增15.04%，但獲利受新台幣匯率、業外收益與投資建廠期費用影響而小幅下滑。2026年公司年報估計電源轉換器銷售量約5,003千件；2026年第1季自結營收473,164千元，年報揭露客戶A與B仍分別占54.2%與10.34%。截至2026年初，外部新聞指出鐵道、工業、醫療客戶動能平均，2025年底新增15%產能到位，2026年1月營收1.71億元、年增41%，5月營收174,677千元、年增22.73%，顯示短期訂單仍優於淡季水準。2025至2028年主要成長動能包括：一、醫療、鐵道、高階工業、國防、航空、無人機、新能源與儲能等利基應用擴張；二、產品朝高功率密度、高效率、超寬輸入、低雜訊、高絕緣、耐候、小型化與模組化發展；三、客製化電源縮短客戶系統設計時間，提高議價能力；四、台中新廠與越南廠擴充供應彈性，台灣偏高階研發與新產品，越南可承接成熟或較大量產品以降低地緣政治與關稅風險；五、透過DigiKey、Chip1Stop、專業媒體、展會與CRM強化全球品牌曝光。主要風險包括：客戶集中度高且客戶A逾半數營收、歐洲市場比重高、匯率波動、關稅與保護主義、原物料與電子零件交期、醫療/鐵道/國防認證週期長、新廠良率與產能爬坡、與台達電、光寶科、明緯、國際DC/DC模組廠的競爭，以及AI以外工業景氣循環。2027至2028未見公司正式量化指引，以上為依公司年報策略、產品開發方向與公開新聞推估。

Supply Chain

Upstream
  • 文曄科技股份有限公司 3036 年報列示 WT 為IC與電晶體供應商之一，推定為文曄科技；屬台股上市電子零組件通路商。
  • 威健實業股份有限公司 3033 年報列示 WEIKENG 為電晶體供應商之一；屬台股上市半導體通路商。
  • 偉詮電子股份有限公司 2436 年報列示 WELTREND 為二極體供應商之一；屬台股上市IC設計公司。
  • 光頡科技股份有限公司 3624 年報列示 VIKING 為電阻供應商之一；屬台股上櫃被動元件公司。
  • 大毅科技股份有限公司 2478 年報列示 TA-I 為電阻供應商之一；屬台股上市被動元件公司。
  • Arrow Electronics, Inc. 年報列示 Arrow 為IC供應商之一；美國上市電子零件通路商，非台股掛牌。
  • LI GER、INSIGHT 年報列示為PCB供應商；未能確認為台股上市櫃公司。
  • FUH BANG、HIGHLAND、PSA、TRUMP 年報列示為電容供應商；未能確認為台股上市櫃公司。
  • KROM、PROMATE、STAR、G-Chen、Zepu 年報列示為二極體、電感或變壓器供應商；未能確認為台股上市櫃公司。
Downstream
  • 客戶A（年報代碼） 2025年占博大營收51.42%，2026年第1季占54.2%；年報因契約或交易對象限制未揭露實名，非關係人。
  • 客戶B（年報代碼） 2025年占博大營收10.09%，2026年第1季占10.34%；年報因契約或交易對象限制未揭露實名，非關係人。
  • DigiKey 全球電子零件電商平台與銷售通路，協助樣品與標準品全球銷售；未上市公司，非台股掛牌。
  • Chip1Stop 電子零件電商平台與銷售通路；日本平台，非台股掛牌。
  • 鐵道、工業、醫療、通訊、國防、航空、新能源與儲能客戶 終端應用產業與系統廠，年報與官網描述為主要應用方向，但未逐一揭露客戶名稱。

Competitors

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.