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Help me set up FinLab and analyze 3308 聯德. Please read: https://finlab.finance/en/setup?stock=3308
3308
quality needs a look, premium valuation, no active signal today.
Is 聯德 a buy? Fundamentals and valuation first
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Weak profitability.Operating margin is in the 1th market percentile. Latest quarterly ROE ≈ 0.1%.
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Valuation is high.PE is in the 94th market percentile; within its own history, PE is around the 100th percentile.
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Foreign investors are net buying.Foreign 20-day net flow ≈ 2.7% of volume (net buy).
Chip flow
Institutional rotation, concentration steady — bullish
Window from 2026-01-17 · Price -21% · branches to 2026-06-17· TDCC to 2026-06-12
- Largest holder 統一-城中 has accumulated 346 lots since the start (sold 0%), still adding.
- Main distributor 中國信託-嘉義 peaked at 280 lots, has sold 36%, 180 left, paused recently.
- TDCC big holders (absolute) >1000-lot holders +0.00pp, mid holders +0, retail +0.00pp — little change.
- Foreign hedge-desk net short Net short -139 lots (inferred from branch profile, mostly hedging — not necessarily bearish, not case-confirmed).
Accumulating
- 統一-城中 +346
- 元大-高雄 +224
- 富邦-台南 +196
- 玉山-台南 +134
- 元大-南勢角 +121
- 元大-善化 +81
Distributing
- 中國信託-嘉義 180 left
- 凱基-台北 93 left
- 群益金鼎-大安 35 left
- 致和證券 41 left
- 凱基-三多 17 left
- 新光-台中 6 left
Desks
- 元大-忠孝 -158
- 國票-中正 -157
- 凱基-城中 -144
- 群益金鼎-東大 -142
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 band | Sample days | 240-day avg return | Median | Win rate | Avg excess (vs index) |
|---|---|---|---|---|---|
| 0-20 | 152 | -59.3% | -59.1% | 0% | -96.9% |
| 20-40 | 29 | Insufficient data | |||
| 40-60 | 29 | Insufficient data | |||
| 60-80 | 18 | Insufficient data | |||
| 80-100 You are here | 53 | -26.9% | -23.8% | 0% | -68% |
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 ≈ 174.17, at the 99.5th 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.
(19d)
(15d)
Currently in “Expensive (own-history top 1/3) × 60-day momentum down”: across 129 historical days, 120-day forward avg gained 10.9%, win rate 64.3%, lagged the market by 20.1%.
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)
PendingAdjusted close makes a new 252-day high; repeats within 20 days counted once.
21 times historically; 60-day forward avg +0.15%, win rate 33.3%, beating the market by -4.25 pts on average.
Monthly revenue YoY ≥ 20% (from filing deadline)
PendingMonthly revenue YoY ≥ 20%; event date is the first trading day after the filing deadline (no look-ahead).
37 times historically; 60-day forward avg +20.62%, win rate 63.9%, beating the market by +17.58 pts on average.
Foreign net buying for 5 straight days
PendingForeign net flow (ex-dealer) positive for 5 straight days; event on day 5; repeats within 20 days counted once.
27 times historically; 60-day forward avg +9.3%, win rate 42.3%, beating the market by +4.54 pts on average.
What does 聯德 do? Company profile
Overview
3308 對應證券為聯德電子股份有限公司普通股，簡稱聯德，英文簡稱 BESTEC，市場別為上市。公司成立於 1988/02/02，股票於 2008/03/12 在台灣證券交易所上市，先前於 2004/09/03 興櫃、2003/07/29 公開發行。總部位於桃園市龜山區科技一路69號，總機為 03-3286800，統一編號 22749711，簽證會計師事務所為勤業眾信。實收資本額依 2026 年可查資料約新台幣 6.00 億元，普通股約 60,000,000 股，特別股 0 股。董事長為陳銘智；2026/06/02 公告總經理鄧瑞玲解任，新任者遺缺待補，由董事長暫為代理職務及業務執行。主要股東／內部人持股依富聯網 2026/05 資料包括金運國際股份有限公司 18.77%、陳宜汶 12.55%、陳頌哲 9.97%、陳銘智 8.04%、陳銘智配偶及未成年子女 7.14%、鄧瑞玲 1.53%。公開可查資料未能穩定確認最新員工總人數；富聯網揭露 2026Q1 平均每人營業收入約 13.07 萬元，Goodinfo 揭露 2025 年全體員工平均年薪約 94.8 萬元。
Business
聯德主要經營交換式電源供應器、無停電裝置、變壓器、電子零件、電機儀器、科學儀表、半導體裝置與有無線電通訊機件之加工、製造、買賣、修護與裝配，近年亦有租賃等相關業務。MoneyDJ 2025/06/23 更新資料指出，2024 年產品營收結構為電源轉換器約 96%、其他與材料約 4%；銷售地區為亞洲 100%。其電源供應器主要應用於個人桌上型電腦，電源轉換器主要應用於印表機、通訊產品；另曾開發或布局多功能事務機、掃描器、電動車、伺服器／雲端、手機充電、LED 室內外照明與 LED 電源驅動器等應用。主要客戶資料可查到 DELL、EPSON 等國內外品牌或系統／EMS 供應鏈，但最新年度個別客戶營收占比未能公開確認。公司 2023 年營收 5.39 億元、EPS 5.94 元，2024 年營收降至 0.68 億元、EPS 1.00 元，2025 年營收降至 0.08 億元、EPS 0.68 元；2026 年 1-5 月累計營收約 260 萬元、年減 5.28%。2025 年 3 月營收快訊註記為「客戶暫停拉貨」，顯示目前本業接單／出貨能見度偏低。
Outlook 2025–2028
2025-2028 展望需分為產業機會與公司個別執行風險兩部分。產業面，交換式電源供應器與電源轉換器受高效率電源、雲端伺服器、AI/HPC 基礎建設、5G/通訊設備、電動車、LED 照明與節能法規推動，長期仍有規格升級與高效率、高功率密度產品需求；若聯德能重新取得穩定客戶拉貨、切入伺服器／雲端、電競高功率、IoT 雲端伺服器電源、無線充電器或 LED 驅動器等較高成長應用，營收基期已低，彈性可能較大。公司面，2024 至 2026 年營收規模急劇萎縮，2025 年全年營收僅約 802.2 萬元，2026 年前 5 月累計營收約 260 萬元，營業利益率呈大幅負值，代表固定成本吸收不足、客戶集中或拉貨中斷風險極高。2026/06/02 總經理解任且職缺待補，短期經營穩定性與轉型執行力需觀察。2025-2028 的關鍵觀察指標包括：是否公告新任總經理、主要客戶是否恢復拉貨、月營收是否回到千萬元以上級距、產品是否重新取得伺服器／雲端／通訊／LED 等應用訂單、毛利率能否轉化為正營業利益、是否處分或出租資產支撐業外獲利、以及公司治理與重大訊息揭露是否改善。主要風險包括客戶集中與訂單流失、規模過小導致營業虧損、同業價格競爭、零組件成本與匯率波動、技術認證週期長、AI 伺服器電源市場由大型供應商主導、管理階層異動、以及 2024 年曾因重大訊息延遲揭露被交易所課違約金所反映的治理風險。
Supply Chain
- 外殼、線材、電容、耗材、變壓器等原物料供應商 MoneyDJ 揭露聯德重要原物料類別包括外殼、線材、電容、耗材、變壓器；未能查得聯德最新指定供應商名單，因此不填具體公司與台股代號。
- DELL 主要客戶之一；美國上市公司，非台股掛牌。資料指出聯德與 DELL 等歐美、亞洲主要系統或 EMS 廠商搭配，產品應用於 PC、電源供應器與相關電源轉換需求。
- EPSON 主要客戶之一；日本上市集團，非台股掛牌。資料指出聯德電源轉換器應用於印表機等產品，並與 EPSON 等客戶或供應鏈搭配。
- PC、印表機、通訊、伺服器／雲端、LED 照明、電動車與手機充電等終端應用客戶 下游應用領域；其中具體客戶除 DELL、EPSON 外，最新公開資料未能確認個別公司名單。
Competitors
- 首利 1471 台股上市；電源供應器相關競爭同業。
- 光寶科 2301 台股上市；電源供應器與電源管理相關大型同業。
- 台達電 2308 台股上市；全球電源與散熱、電源管理龍頭，為聯德在電源供應器領域的重要競爭者。
- 飛宏 2457 台股上市；電源供應器與充電相關同業。
- 環科 2413 台股上市；電子零組件與電源相關同業。
- 新巨 2420 台股上市；電源供應器同業。
- 全漢 3015 台股上市；電源供應器同業。
- 偉訓 3032 台股上市；電源供應器與機殼相關同業。
- 僑威 3078 台股上櫃；電源供應器同業。
- 勝德 3296 台股上市；電源、連接與電子零組件相關同業。
- 幸康 3332 台股上櫃；電源供應器相關同業。
- 曜越 3540 台股上市；電競與電源供應器相關同業。
- 亞元 6109 台股上櫃；電源供應器同業。
- 康舒 6282 台股上市；電源供應器、能源與電動車電源相關同業。
- 群電 6412 台股上市；電源供應器與電源轉換器同業。
- 博大 8109 台股上櫃；工業電源模組與電源供應器相關同業。
- Emerson、Tyco、Invensys/Lambda、Artesyn、Astec MoneyDJ 列示之國際主要競爭者；多為海外公司或品牌，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.