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2478

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

steady quality, premium valuation.

1 active signal
252d high
This page refreshes daily after the close. Add 大毅 to your watchlist to track signal changes on your next visit.
Valuation 24Quality 63Growth 60Momentum 99Chips 63

Is 大毅 a buy? Fundamentals and valuation first

  • Above-average profitability.Operating margin is in the 70th market percentile. Latest quarterly ROE ≈ 2.2%.

  • Valuation is high.PE is in the 80th market percentile; within its own history, PE is around the 98th percentile.

  • Foreign investors are net buying.Foreign 20-day net flow ≈ 2.1% of volume (net buy).

  • Signals are active now.On the latest data, signals such as 252-day price high are active — see the historical forward returns after each occurrence below.

Chip flow

Bullish +0.95
BearishNeutralBullish

Single-sided accumulation, concentration rising — bullish

  • Single-sided accumulation, concentration rising — bullish
  • 台灣摩根士丹利 holds 4,173 lots
  • sellers have 1,051 lots left, ~62 sessions to clear

Window from 2026-01-17 · Price +215% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 台灣摩根士丹利 has accumulated 4,173 lots since the start (sold 0%), still adding.
  • Main distributor 美商高盛 peaked at 2,600 lots, has sold 72%, 721 left, ~9 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders +11.14pp, mid holders +12, retail -10.86pp — concentration shifting upward.
  • Foreign hedge-desk net short Net short -1,337 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
台灣摩根士丹利摩根大通凱基-台北新光國票-安和元大證券
Distributing
美商高盛凱基-站前統一台新國泰-敦南群益金鼎-台北
Desks
own scale
美林富邦-桃園兆豐-忠孝康和-板橋
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 +4,173
    sold 0%· still adding
  • 摩根大通 +4,055
    sold 0%· still adding
  • 凱基-台北 +3,525
    sold 13%· still adding
  • 新光 +2,091
    sold 0%· still adding
  • 國票-安和 +1,537
    sold 0%· still adding
  • 元大證券 +1,146
    sold 0%· still adding

Distributing

  • 美商高盛 721 left
    sold 72%· ~9 sessions to clear
  • 凱基-站前 196 left
    sold 89%· paused recently
  • 統一 129 left
    sold 85%· paused recently
  • 台新 152 left
    sold 74%· paused recently
  • 國泰-敦南 125 left
    sold 77%· paused recently
  • 群益金鼎-台北 115 left
    sold 66%· ~6 sessions to clear

Desks

  • 美林 -1,102
    hedge desk · will cover
  • 富邦-桃園 -1,046
    unclassified
  • 兆豐-忠孝 -1,039
    unclassified
  • 康和-板橋 -951
    unclassified
Still selling 1,051 lots ~62 sessions to bottom at most
Recent buy/sell force +16,171 absorbed / -1,139 sold buyers slightly ahead
Hedge-desk net short -1,337 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.

252-day price high (breakout)

Active

Adjusted close makes a new 252-day high; repeats within 20 days counted once.

22 historical occurrences (since 2009-07-24)
Average forward return after 252-day price high (breakout)。20-day: Win 50%, Sample 22, Median +2.52%, Excess +5.61%, Beat mkt rate 54.5%；60-day: Win 50%, Sample 20, Median -0.89%, Excess +5.58%, Beat mkt rate 40%；120-day: Win 63.2%, Sample 19, Median +4.74%, Excess +20.81%, Beat mkt rate 36.8%

120 days after: historical avg +32.69%

20-day +9.23%
60-day +11.75%
120-day +32.69%
20-day
60-day
120-day
Win
50%
50%
63.2%
Sample
22
20
19
Median
+2.52%
-0.89%
+4.74%
Excess
+5.61%
+5.58%
+20.81%
Beat mkt rate
54.5%
40%
36.8%

Over 19 occurrences, 120-day forward avg gained 32.69%, beat the market by 20.81 pts; win rate 63.2%.

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)
0-20 718+9.3% +4.2% 57.4% -3.8%
20-40 770+25.4% +17.1% 76.2% +0.8%
40-60 760+50% +3.5% 59.7% +29.5%
60-80 278+21.2% +23.9% 60.4% +12.9%
80-100 You are here481-7.3% +0.5% 51.6% -14.8%

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 ≈ 61.32, at the 98.4th 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
+5.7%
Win rate 57.5% Excess -4.2%
494d
+27.7%
Win rate 61.6% Excess +13.7%
717d
Now
+10%
Win rate 42.7% Excess +6.9%
386d
60-day momentum down
+9.8%
Win rate 59.7% Excess +1.7%
803d
+6.7%
Win rate 49.3% Excess +2.3%
454d
+4.8%
Win rate 56% Excess -1.4%
273d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 386 historical days, 120-day forward avg gained 10%, win rate 42.7%, beat the market by 6.9%.

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.

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).

60 times historically; 60-day forward avg +2.32%, win rate 35%, beating the market by +0.58 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.

70 times historically; 60-day forward avg +9.09%, win rate 52.9%, beating the market by +4.86 pts on average.

What does 大毅 do? Company profile

電子零組件業；被動元件、晶片電阻與保護元件 台灣證券交易所上市

Overview

2478 對應證券為大毅，為台灣證券交易所上市普通股，非 ETF、ETN、權證或特別股。公司成立於 1989 年 12 月 28 日，1999 年 9 月 20 日上櫃，2001 年 9 月 17 日上市；總部位於桃園市蘆竹區南山路三段 17 巷 4 號。董事長與總經理均為江財寶，發言人為劉俐妏。實收資本額約新台幣 14.473 億元，已發行普通股約 144,731,339 股。2024 年集團營收為新台幣 5,031,284 仟元，年報揭露 2024 年稅後淨利 454,622 仟元。員工規模依 2025 年年報為 2024 年底 1,438 人、截至 2025 年 5 月 7 日 1,519 人；2024 永續報告另以南山、長興、蘇州、東莞廠統計員工總人數 1,236 人，兩者統計範圍不同。主要營運據點包括台灣桃園長興廠、南山廠，中國蘇州、東莞，馬來西亞檳城，越南海陽，以及美國洛杉磯辦事處。主要股東依 2025 年年報包括燦天投資、江財寶、玉山商業銀行受託大毅科技員工持股會信託財產專戶、金恆星投資、王金榮、林秋松、林泰山、金桂冠投資、劉俐妏、弘崴投資等。

Business

大毅主要從事厚膜晶片電阻、厚膜晶片排阻、厚膜電阻網路、厚膜積體電路、表面黏著裝配等電子零組件製造、加工與買賣，並代理國內外廠商產品報價投標及經銷。2024 年合併營收結構為晶片電阻新台幣 4,567,711 仟元、占 90.79%，其他或保護元件約 463,573 仟元、占 9.21%；永續報告亦揭露 2024 年晶片電阻占 91%、保護元件占 9%。產品線包括厚膜晶片電阻、厚膜晶片排阻、薄膜晶片電阻、晶片保險絲、厚膜高壓電阻、電流感測元件、低阻抗晶片電阻、熱敏電阻、靜電抑制器、高功率晶片電阻等；計畫開發薄型與高功率電流感測器、超低與高電流保護元件、薄膜式電子點火晶片、三端保險絲等。商業模式以自有製造、客製化規格、利基型產品、高可靠度產品與海外營運據點服務客戶；主要應用涵蓋汽車、工業、替代能源、消費電子、PC、手機、平板、伺服器、通訊基地台、AI 伺服器、5G/6G、高速運算、醫療、穿戴與智慧家電。2024 年銷售地區為台灣 15.17%、亞洲不含台灣 80.66%、其他地區 4.17%。年報揭露最近二年度無單一銷貨客戶超過銷貨總額 10%，因此未揭露主要客戶名稱。

Outlook 2025–2028

2025 至 2028 年展望以產品組合升級、AI 與車用需求、海外產能布局為核心。公司 2025 年經營方針為聚焦利基型產品與高規格特殊品，朝高精密微型與高可靠度電阻開發，擴展 AI、5G 與車用領域；生產策略聚焦車用抗硫化電阻、低溫度係數與低阻值電流感測電阻。年報指出 2025 年越南海陽新廠加入營運，有助於服務亞洲客戶、提高供應鏈彈性並降低地緣政治與關稅風險。近期法說會新聞指出，2026 年公司目標將電阻與保護元件比重由約 55:45 進一步調整到各 50%，AI 營收比重預估由 2025 年約 8%提升至 2026 年約 12%，車用約由 17%微升至 18%；這代表高階電阻、保護元件、電流感測與 ESD 類產品將是毛利率改善重點。2027 至 2028 年未見公司量化財測，合理推估成長動能仍來自 AI 伺服器、AI PC、AI 手機、資料中心、電動車、自動駕駛、5G/6G、工業控制、人形機器人與無人機等高功率、高精度、高可靠度需求；但此部分屬產業趨勢推估，非公司正式財測。主要風險包括標準型晶片電阻價格競爭、終端需求景氣循環、原物料仰賴進口、匯率波動、銀等貴金屬與金屬原料價格上漲、人工成本、地緣政治與供應鏈重組、客戶對車規與高精密規格要求提高，以及新產品認證與量產進度不如預期。

Supply Chain

Upstream
  • 陶瓷基板、基板供應商 主要原物料之一；年報與永續報告僅揭露類別，未揭露供應商真名，且部分供應商因契約以 A、B、C 代號揭露。
  • 塗料、導電漿、金屬與貴金屬材料供應商 主要原物料包括塗料、金屬、基板；公司指出金屬類原物料受供應鏈與價格波動影響較大，採多供應商策略。
  • 錫球、鎳塊等電鍍與製程材料供應商 年報列為採購成本受貴金屬價格影響的材料類別；未揭露具名供應商。
  • 自動化與製程設備供應商 公司推動工業 4.0、自動化生產、MIS、EDI、ERP 與線上簽核，相關設備與系統供應商未具名揭露。
Downstream
  • 消費電子、PC、手機、平板與智慧家電品牌及代工客戶 晶片電阻與保護元件終端應用；年報揭露無單一客戶占銷貨超過 10%，未揭露具名客戶。
  • 伺服器、AI 伺服器、資料中心與高速運算客戶 2025 年後 AI 應用被公司列為成長動能，帶動高階電阻、保護元件與電流感測需求；客戶未具名。
  • 車用電子、電動車與自動駕駛供應鏈客戶 公司開發車用抗硫化電阻、低阻值電流感測電阻與通過 AEC-Q200、IATF 16949 相關車規認證產品；客戶未具名。
  • 工業控制、通訊基地台、醫療、穿戴與替代能源客戶 產品用於工業控制、感測器、通訊基地台、醫療與穿戴等應用；客戶未具名。

Competitors

  • 國巨 2327 台股上市，被動元件大廠，與大毅在電阻、MLCC、保護元件等被動元件領域競爭。
  • 華新科 2492 台股上市，被動元件大廠，產品涵蓋電阻、MLCC、保護元件等。
  • 光頡科技 3624 台股上櫃，薄膜、厚膜電阻與電流感測元件等產品，與大毅部分產品線競爭。
  • 天二科技 6834 台股掛牌公司，電阻與被動元件同業；掛牌市場與狀態請以交易所最新資料為準。
  • 興勤電子 2428 台股上市，保護元件、熱敏電阻、壓敏電阻等同業，與大毅保護元件布局部分重疊。
  • KOA 日本上市公司，全球電阻器競爭者，非台股掛牌。
  • Kyocera 日本上市公司，電子元件與被動元件競爭者，非台股掛牌。
  • Murata Manufacturing 日本上市公司，全球被動元件大廠，非台股掛牌。
  • Taiyo Yuden 日本上市公司，全球被動元件大廠，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.