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Help me set up FinLab and analyze 6290 良維. Please read: https://finlab.finance/en/setup?stock=6290

6290

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

strong quality, fair valuation, no active signal today.

This page refreshes daily after the close. Add 良維 to your watchlist to track signal changes on your next visit.
Valuation 31Quality 85Growth 49Momentum 88Chips 46

Is 良維 a buy? Fundamentals and valuation first

  • Top-tier profitability.Operating margin beats ~83% of the market. Latest quarterly ROE ≈ 5.7%.

  • Valuation is neutral.PE is in the 67th market percentile; within its own history, PE is around the 96th percentile.

  • Foreign investors are net buying.Foreign 20-day net flow ≈ 0.1% of volume (net buy).

Chip flow

Bullish +0.58
BearishNeutralBullish

Single-sided accumulation, concentration rising — bullish

  • Single-sided accumulation, concentration rising — bullish
  • 富邦-陽明 holds 1,126 lots
  • sellers have 5,565 lots left, ~100 sessions to clear

Window from 2026-01-17 · Price +83% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 富邦-陽明 has accumulated 1,126 lots since the start (sold 0%), holding.
  • Main distributor 富邦證券 peaked at 5,871 lots, has sold 32%, 3,980 left, ~100 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders +2.18pp, mid holders +7, retail -3.23pp — concentration shifting upward.
  • Foreign hedge-desk net short Net short -1,899 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
富邦-陽明凱基-站前永豐金-中正台新證券永豐金-復興永豐金-新竹
Distributing
富邦證券凱基-台北凱基-信義港商野村宏遠證券康和
Desks
own scale
永豐金證券國泰證券元大證券統一
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 富邦-陽明 +1,126
    sold 0%
  • 凱基-站前 +875
    sold 18%
  • 永豐金-中正 +842
    sold 0%· still adding
  • 台新證券 +629
    sold 3%
  • 永豐金-復興 +565
    sold 0%· still adding
  • 永豐金-新竹 +555
    sold 9%

Distributing

  • 富邦證券 3,980 left
    sold 32%· ~100 sessions to clear
  • 凱基-台北 461 left
    sold 84%· ~22 sessions to clear
  • 凱基-信義 962 left
    sold 38%· paused recently
  • 港商野村 209 left
    sold 80%· ~7 sessions to clear
  • 宏遠證券 499 left
    sold 39%· paused recently
  • 康和 250 left
    sold 62%· paused recently

Desks

  • 永豐金證券 -2,729
    unclassified
  • 國泰證券 -2,540
    unclassified
  • 元大證券 -2,378
    unclassified
  • 統一 -1,107
    unclassified
Still selling 5,565 lots ~100 sessions to bottom at most
Recent buy/sell force +1,372 absorbed / -1,522 sold sellers slightly ahead
Hedge-desk net short -1,651 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

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+77.3% +63.6% 97% +54.2%
20-40 621+22.8% +14.1% 81.2% +2.1%
40-60 673+35.6% +17.9% 77.9% +17.7%
60-80 744+30.3% +16.4% 68.5% +14.2%
80-100 You are here640+14.7% +10.9% 62.7% +7.3%

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 ≈ 35.47, at the 96.5th 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
+25.2%
Win rate 55.6% Excess +11.9%
241d
+20.7%
Win rate 66.7% Excess +10.4%
663d
Now
+13.7%
Win rate 58.1% Excess +4.8%
898d
60-day momentum down
+15.7%
Win rate 60.6% Excess +4.8%
546d
+8.5%
Win rate 73.1% Excess +4.4%
431d
+20.7%
Win rate 63.9% Excess +18.7%
380d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 898 historical days, 120-day forward avg gained 13.7%, win rate 58.1%, beat the market by 4.8%.

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.

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.

29 times historically; 60-day forward avg +15.2%, win rate 59.3%, beating the market by +8.81 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).

52 times historically; 60-day forward avg -0.7%, win rate 41.7%, beating the market by -5.34 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.

64 times historically; 60-day forward avg +10.3%, win rate 62.9%, beating the market by +5.71 pts on average.

What does 良維 do? Company profile

電子零組件業;電源線、訊號線、連接線組與高電流電源線 櫃買中心上櫃

Overview

6290 對應證券為良維科技股份有限公司,英文名稱 LONGWELL COMPANY,為櫃買中心上櫃普通股。公司成立於 1972/09/05,掛牌上櫃日期為 2005/06/03,總部位於台北市中山區長安東路一段36號10樓,董事長及總經理均為李淳正,發言人為李博宇,統一編號 11298247。公開資料顯示實收資本額約新台幣16.94至16.95億元、已發行普通股約1.69億股;股務代理為中國信託商業銀行,簽證會計師事務所為資誠聯合會計師事務所。員工規模方面,104人力銀行揭露約4000人,屬集團或公司徵才口徑,與年報正式員工數可能不同。主要股東方面,公開網頁可確認董監持股資訊包含董事長李淳正約3384張、持股約1.99%,世聯投資股份有限公司約2600張、持股約1.53%,金立紘股份有限公司約1797張;鉅亨網資料顯示前十大持股約7.63%,但完整前十大股東名單未逐筆由官方年報驗證。

Business

良維是電纜與電子元件供應商,核心產品包括 AC 電源傳輸線組、DC 訊號傳輸線組、轉接頭、Type-C/資料線、電動車與充電站線材、資料中心與伺服器用高電流電源線及機櫃/機架間跳線。公司商業模式以客製化線材設計、安規認證、垂直整合製造與全球產地供應為主,產品屬安規部品,客戶切換供應商的認證成本與時間較高。原物料包含銅線、無鹵塑膠料、塑膠粒、端子/銅片、內模/插頭、塑膠件、五金件;生產基地包括台灣、廣西、泰國,並規劃印度布局。2025年前10月應用別營收比重由法說新聞揭露為資料中心與伺服器36%、電腦周邊設備45%、影音視聽設備12%、物聯網與家電4%、電動車與充電站3%;2024年資料中心與伺服器約24%,顯示 AI 資料中心高電流產品成為主要成長來源。銷售地區方面,MoneyDJ整理2024年為亞洲62%、美洲25%、歐洲10%、內銷3%。主要客戶與終端應用包括全球 CSP、AI資料中心、伺服器、PC/NB、品牌電子、影音家電、電動車與充電基礎設施;新聞揭露 AWS 為重要/最大客戶之一,並提及與 NVIDIA Vera Rubin、Dell、Microsoft、Google、HP、Lenovo、Apple、ChargePoint、Lucid、SpaceX/Starlink 等供應鏈或終端品牌有不同程度合作、認證、出貨或歷史供應關係,但部分客戶細節受保密協定限制。

Outlook 2025–2028

2025至2028年展望以 AI 資料中心高電流電源線為核心。2025年受 AI 伺服器與 CSP 資本支出推動,前11月營收93.06億元、年增28.49%,全年營收挑戰百億元;2025年全年稅後純益14.06億元、EPS 8.73元,創新高,毛利率31.42%,優於2024年的24.86%。2026年管理層與新聞資料指出,下半年 AWS 新平台切換、NVIDIA Vera Rubin 相關產品開始出貨,高單價 AI 大電源線占比提高,ASP 預估提升約15%,AI產品營收比重有機會由第一季約2成提高至下半年約5成,全年營收及獲利目標為雙位數成長。產能方面,泰國產能比重預計2026年突破4成,泰國第三廠規劃2026年第4季動工、目標2027年底投產;印度據點聚焦當地市場、安規取得及未來出口能力。2027至2028年的中期成長動能來自 AI 資料中心持續擴建、伺服器功耗提升帶動高安培/高規格電源線單價上升、非中國產能需求、更多 CSP 認證與量產機會,以及公司嘗試切入伺服器內部線束/高速訊號傳輸領域。主要風險包括 CSP 資本支出循環與客戶集中度、AI伺服器平台轉換時程、泰國/印度擴產執行與良率、匯率與關稅、銅價及塑膠料價格波動、EV需求競爭激烈、國際大廠如 Amphenol/Molex 及台廠競爭、客戶保密導致外部能見度不足。

Supply Chain

Upstream
  • 華新麗華 1605 銅線、銅材屬良維主要原料類別;華新麗華為台股上市銅材/線纜材料供應商之一,未由良維公開資料確認為直接供應商。
  • 大亞電線電纜 1609 電線電纜與銅導體產業上游關聯公司;未由良維公開資料確認為直接供應商。
  • 台塑 1301 PVC/塑膠原料為線材上游材料之一;台塑為台股上市塑化原料公司,未由良維公開資料確認為直接供應商。
  • 台聚 1304 塑膠粒與樹脂類材料屬線材上游材料;台聚為台股上市塑化材料公司,未由良維公開資料確認為直接供應商。
  • 端子、銅片、插頭、塑膠件、五金件供應商 良維主要原料包含端子/銅片、內模/插頭、塑膠件、五金件;公開資料未查得完整直接供應商名單。
Downstream
  • Amazon / AWS 美國上市公司 Amazon 旗下 AWS;新聞揭露為良維 AI 資料中心大電流電源線最大或重要客戶之一,2026下半年新機種切換帶動 ASP 與出貨。
  • NVIDIA 美國上市公司;良維大電源線通過 NVIDIA Vera Rubin 相關認證並為主要供應商之一,預計2026下半年開始出貨。
  • Dell Technologies 美國上市公司;新聞與產業資料提及為良維伺服器/AI線材供應鏈客戶或終端品牌。
  • Microsoft 美國上市公司;新聞提及良維與主要CSP包含 Microsoft 有專案或訂單/供應鏈接觸,細節受保密協定限制。
  • Alphabet / Google 美國上市公司;新聞提及良維與主要CSP包含 Google 有不同合作進度,細節受保密協定限制。
  • HP 美國上市公司;歷史品牌電子/電腦周邊客戶之一,屬電腦周邊與電源線下游。
  • Lenovo 香港上市公司;歷史品牌電子/電腦周邊客戶之一,屬電腦周邊與電源線下游。
  • Apple 美國上市公司;市場資料提及良維供應高階線材/Type-C相關產品,細節未完全公開。
  • ChargePoint 美國上市公司;市場資料提及為電動車充電線/充電基礎設施相關客戶。
  • Lucid 美國上市公司;市場資料提及為電動車相關品牌客戶。
  • SpaceX / Starlink 未上市公司;新聞提及 Starlink 對部分產品非中國生產有要求,良維因此加速泰國產能與供應鏈布局。

Competitors

  • 貿聯-KY 3665 台股上市連接線束與互連解決方案公司,AI資料中心與EV線束領域與良維部分重疊。
  • 良得電 2462 台股上市電源線、電線電纜與連接線廠,為良維在電源線與線材市場的同業。
  • 信邦 3023 台股上市連接線束與連接器模組廠,工業、車用、醫療與通訊應用與良維部分重疊。
  • 鴻碩 3092 台股上櫃連接線與線材廠,屬連接線材同業。
  • 今皓 3011 台股上市連接器與線材廠,屬良維同業競爭者之一。
  • 維熹 3501 台股上市電源線與連接器相關公司,市場資料列為轉接頭/電源線競爭者。
  • Amphenol 美國上市國際連接器大廠;新聞明確提及為國際競爭對手之一。
  • Molex Koch集團旗下未上市連接器與線材大廠;市場資料提及在轉接頭與高階線材領域曾為競爭者。
Sources(17)

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.