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 3588 通嘉. Please read: https://finlab.finance/en/setup?stock=3588

No install, open FinLab Studio

3588

通嘉 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 通嘉 to your watchlist to track signal changes on your next visit.
Valuation 32Quality 43Growth 66Momentum 67Chips 76

Is 通嘉 a buy? Fundamentals and valuation first

  • Above-average profitability.Operating margin is in the 44th market percentile. Latest quarterly ROE ≈ 1.3%.

  • Valuation is high.PE is in the 89th market percentile; within its own history, PE is around the 97th percentile.

  • Foreign investors are net buying.Foreign 20-day net flow ≈ 4.7% of volume (net buy).

  • Strong revenue growth.Latest monthly revenue YoY ≈ 21.7%, 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

Bullish +0.78
BearishNeutralBullish

Single-sided accumulation, concentration rising — bullish

  • Single-sided accumulation, concentration rising — bullish
  • 凱基-台北 holds 565 lots
  • sellers have 883 lots left, ~650 sessions to clear

Window from 2026-01-17 · Price +10% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 凱基-台北 has accumulated 565 lots since the start (sold 20%), now trimming.
  • Main distributor 美商高盛 peaked at 618 lots, has sold 39%, 376 left, ~57 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders +1.85pp, mid holders +2, retail -3.20pp — concentration shifting upward.
  • Foreign hedge-desk net short Net short -150 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-台北凱基-大直統一-三重摩根大通永豐金-敦北華南永昌-南京
Distributing
美商高盛國票證券新加坡商瑞銀港商野村國泰-台中凱基-和平
Desks
own scale
國泰-高雄國泰證券富邦-新竹華南永昌-大安
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 凱基-台北 +565
    sold 20%
  • 凱基-大直 +430
    sold 0%· still adding
  • 統一-三重 +328
    sold 0%· still adding
  • 摩根大通 +314
    sold 24%
  • 永豐金-敦北 +293
    sold 1%· still adding
  • 華南永昌-南京 +186
    sold 0%

Distributing

  • 美商高盛 376 left
    sold 39%· ~57 sessions to clear
  • 國票證券 179 left
    sold 34%· ~85 sessions to clear
  • 新加坡商瑞銀 130 left
    sold 27%· ~650 sessions to clear
  • 港商野村 79 left
    sold 36%· paused recently
  • 國泰-台中 51 left
    sold 55%· ~57 sessions to clear
  • 凱基-和平 66 left
    sold 31%· paused recently

Desks

  • 國泰-高雄 -211
    unclassified
  • 國泰證券 -137
    unclassified
  • 富邦-新竹 -112
    unclassified
  • 華南永昌-大安 -109
    unclassified
Still selling 883 lots ~650 sessions to bottom at most
Recent buy/sell force +601 absorbed / -235 sold buyers slightly ahead
Hedge-desk net short -65 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 21.71%

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

57 historical occurrences (since 2009-08-14)
Average forward return after Monthly revenue YoY ≥ 20% (from filing deadline)。20-day: Win 53.6%, Sample 56, Median +1.3%, Excess +0.29%, Beat mkt rate 46.4%；60-day: Win 49.1%, Sample 55, Median -0.33%, Excess +1.49%, Beat mkt rate 45.5%；120-day: Win 40%, Sample 55, Median -3.61%, Excess +3.76%, Beat mkt rate 38.2%

120 days after: historical avg +11.91%

20-day +1.78%
60-day +6.07%
120-day +11.91%
20-day
60-day
120-day
Win
53.6%
49.1%
40%
Sample
56
55
55
Median
+1.3%
-0.33%
-3.61%
Excess
+0.29%
+1.49%
+3.76%
Beat mkt rate
46.4%
45.5%
38.2%

Over 55 occurrences, 120-day forward avg gained 11.91%, beat the market by 3.76 pts; win rate 40%.

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)
0-20 576+21.6% +20.7% 82.1% -4.6%
20-40 234+5.9% +10.2% 65% -4.4%
40-60 341-7.6% -13.7% 29% -22.7%
60-80 498-23.3% -26.3% 12.4% -38.5%
80-100 You are here1233+49.8% +29% 59.1% +33.4%

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 ≈ 96.33, 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
+12.4%
Win rate 55.5% Excess +1.8%
220d
-5%
Win rate 21.2% Excess -13.2%
203d
Now
+17.4%
Win rate 61.4% Excess +8.7%
1066d
60-day momentum down
+7.3%
Win rate 53.6% Excess +0.9%
522d
-6.6%
Win rate 31.8% Excess -17.5%
381d
+7.1%
Win rate 47.9% Excess -2.8%
610d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 1066 historical days, 120-day forward avg gained 17.4%, win rate 61.4%, beat the market by 8.7%.

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.

19 times historically; 60-day forward avg +14.21%, win rate 72.2%, beating the market by +7.51 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 +4.23%, win rate 53.7%, beating the market by -0.1 pts on average.

What does 通嘉 do? Company profile

半導體業；類比 IC／電源管理 IC 設計 上市

Overview

3588 對應通嘉科技股份有限公司，為台灣證券交易所上市普通股，產業別為半導體業。公司成立於 2002 年 9 月 18 日，上市日期為 2009 年 8 月 14 日，總部位於新竹縣竹北市台元二街 1 號 4F-1（新竹台元科技園區）。公開資訊觀測站上市公司基本資料顯示，董事長為高育坤，總經理為祁亨忠，發言人為余淑薇，統一編號 80254357，實收資本額為新台幣 619,931,820 元，已發行普通股 61,993,182 股。公司 2025 年 Q1 法說會揭露，截至 2025 年 5 月資本額約 6.04 億元、員工總人數 186 名；2024 年度年報文字可抽取內容顯示截至 2024 年 3 月 30 日員工約 180 人，研發人員約 97 人。公司官網 2026 年 3 月 30 日前十大股東資料顯示，主要股東包括捷能投資股份有限公司持有 4,977,635 股、持股 8.03%，李皓民持有 2,520,715 股、持股 4.07%，謝忠偉持有 1,931,000 股、持股 3.12%，戴圳家持有 1,529,939 股、持股 2.47%，東圳資產股份有限公司持股 1.46%，戴湘綺持股 1.22%，陳一峯持股 1.08%，褚珂真持股 1.04%，花旗託管柏克萊資本 SBL/PB 投資專戶持股 0.80%，台新銀行受託保管通嘉科技員工持股 0.68%。

Business

通嘉是無晶圓廠 IC 設計公司，專注 AC/DC 中大功率電源管理 IC，官網定位為提供 AC/DC 中大功率完整解決方案的電源管理 IC 設計公司。主要產品包括 Hi-Power 控制器、Mid-Power 控制器、同步整流控制器、USB PD & Type C 控制器、LED 應用產品；年報列示主要產品為 AC/DC converter、USB-PD/QC4.0+ total solution、LED driver for lighting field。產品應用涵蓋電視／顯示器、適配器、網通、LED 照明，以及 NB／平板／螢幕／印表機／POS／PC、Mobile／Accessory、TV／Lighting／Game／智慧家電／鋰電池充電系統／Speaker、醫療、電動工具、工業電源等。商業模式為完成電源管理 IC 設計後，委由晶圓代工、封裝、測試廠生產，再透過代理商或通路銷售至電源供應器廠、品牌客戶與終端系統供應鏈。2024 年度法說會與第三方資料均顯示產品營收高度集中於電源管理 IC；2025 Q1 合併財報顯示 2026 年第一季客戶合約收入皆為積體電路銷售，營收 397,055 仟元、年增約 15.2%，毛利率約 34%，EPS 0.37 元。依地區別，2026 年第一季中國大陸 197,537 仟元、台灣 194,660 仟元、美國 4,696 仟元、韓國 162 仟元。公司 2023 年年報揭露 2023 年前三大客戶以匿名方式列示，分別占銷貨淨額 27.71%、12.71%、11.00%，另 2023 年營收地區以台灣 598,364 仟元與中國大陸 534,307 仟元為主。

Outlook 2025–2028

2025 至 2028 年展望重點在中大功率 AC/DC total solution、USB PD 3.1／3.2 高功率快充、GaN／高壓整合、PFC／LLC／AHB、高效率與高整合度產品，以及 AI PC、NB、5G、網通、TV、醫療、工控、Mini LED／LED 照明、電動工具等應用擴張。公司年報已揭露持續投入 AI 效率演算法、高頻化、耐高壓、智能化、高功率、高集成 total solution，並投入 PD3.1 EPR、48V 輸出與 240W PD 完整解決方案；官網新聞亦揭露 USB-C Power Delivery 3.2 控制晶片最高支援 48V／240W 應用。2025 Q1 法說會顯示公司仍以 AC/DC 相關電源管理 IC 為主，2025 年上半年受惠庫存逐步合理化、部分客戶提前備貨與高階 total solution 導入，但毛利率仍受產品組合、匯率與競爭影響。2025 年底市場法說整理資料指出，2025 Q3 受全球需求疲弱、補貨力道轉弱、中國同業削價與新台幣升值影響，毛利率與營業利益承壓；但 NB 完整解決方案、醫療、Mini LED 等高功率利基市場可能支撐 2026 年出貨成長。2026 至 2028 年中期機會包括：歐盟 USB Type-C 規格普及、筆電與行動裝置高瓦數快充升級、AI PC 與資料中心周邊電源效率需求提高、網通與高速網路設備電源升級、能源法規推動低待機功耗與高效率電源設計。主要風險包括：電源管理 IC 技術跟進快且規格可能商品化、中國成熟製程與同業價格競爭、晶圓代工／封測供應集中、主要客戶與代理商銷售集中、終端消費電子需求波動、美元與人民幣銷售計價下的新台幣升值壓力、GaN／高壓製程良率與安規認證時程、以及公司未逐項揭露主要客戶與供應商造成的能見度限制。

Supply Chain

Upstream
  • 甲供應商 年報匿名揭露之主要進貨供應商；2023 年占進貨淨額 85.28%，公司未揭露真實名稱。依年報描述，通嘉屬 IC 設計公司，晶圓製造、封裝及測試均委外，該供應商可能屬晶圓代工或相關製程供應鏈，但不可確定。
  • 乙供應商 年報匿名揭露之主要進貨供應商；2023 年占進貨淨額 9.50%，公司未揭露真實名稱。
  • 晶圓代工廠 公司年報明確說明產品設計後需委由晶圓代工廠加工製造，且會依製程能力、產能、價格、品質良率與交期選擇合作對象；未揭露個別廠名。
  • 封裝測試廠 公司年報明確說明封裝及測試委外生產，但未揭露個別廠商名稱。
Downstream
  • 甲客戶 年報匿名揭露之主要銷貨客戶；2023 年占銷貨淨額 27.71%，公司未揭露真實名稱。年報另說明公司銷貨透過代理商再銷售予終端客戶，主要代理商多為上市公司或上市公司 100% 持有子公司。
  • 乙客戶 年報匿名揭露之主要銷貨客戶；2023 年占銷貨淨額 12.71%，公司未揭露真實名稱。
  • 丙客戶 年報匿名揭露之主要銷貨客戶；2023 年占銷貨淨額 11.00%，公司未揭露真實名稱。
  • 電源供應器廠與品牌客戶供應鏈 公司產品透過代理商導入各類電源供應器與品牌終端應用，包括 NB、手機快充、網通、TV、智慧家電、醫療、工控、LED 照明、電動工具等；公司未逐名揭露終端客戶。

Competitors

  • 偉詮電 2436 台股上市 IC 設計公司，產品涵蓋電源管理與 USB／Type-C 相關控制 IC，為通嘉在電源管理與快充控制領域的可比同業。
  • 虹冠電 3257 台股上櫃電源管理 IC 設計公司，聚焦 AC/DC、PWM、PFC 等電源控制 IC，與通嘉產品定位相近。
  • 茂達 6138 台股上櫃類比 IC／電源管理 IC 供應商，產品涵蓋電源管理、馬達驅動等，屬可比同業。
  • 矽力*-KY 6415 台股上市電源管理 IC 公司，產品線廣、規模較大，與通嘉在部分 PMIC／電源管理應用競爭。
  • 致新 8081 台股上櫃類比與電源管理 IC 公司，產品涵蓋 DC/DC、LDO、電源開關等，與通嘉部分電源管理市場重疊。
  • 力智 6719 台股上市電源管理 IC 公司，聚焦電源轉換、電源管理與相關控制 IC，屬台灣 PMIC 可比同業。
  • Power Integrations 美國上市公司，提供高壓電源轉換與 AC/DC 電源 IC，年報與市場報導常將其視為高階 AC/DC 電源 IC 的國際競爭者。
  • onsemi 美國上市半導體公司，產品涵蓋電源管理、功率半導體與控制 IC，在高功率電源與工業應用與通嘉部分產品方向競爭。
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.