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 6451 訊芯-KY. Please read: https://finlab.finance/en/setup?stock=6451

6451

訊芯-KY Semiconductor As of 2026-06-17 Updated daily after market close

quality needs a look, premium valuation, no active signal today.

This page refreshes daily after the close. Add 訊芯-KY to your watchlist to track signal changes on your next visit.
Valuation 11Quality 15Growth 43Momentum 96Chips 46

Is 訊芯-KY a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 19th market percentile. Latest quarterly ROE ≈ -1.9%.

  • Valuation is high.PE is in the 100th market percentile; within its own history, PE is around the 100th percentile.

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

Chip flow

Bullish +0.50
BearishNeutralBullish

Single-sided accumulation, concentration rising — bullish

  • Single-sided accumulation, concentration rising — bullish
  • 凱基-信義 holds 2,484 lots
  • sellers have 3,938 lots left, ~196 sessions to clear

Window from 2026-01-17 · Price +272% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 凱基-信義 has accumulated 2,484 lots since the start (sold 11%), still adding.
  • Main distributor 摩根大通 peaked at 2,217 lots, has sold 35%, 1,430 left, ~19 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders +3.48pp, mid holders +15, retail -8.32pp — concentration shifting upward.
  • Foreign hedge-desk net short Net short -481 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-信義美商高盛國票-長城宏遠證券新光-台南玉山-城中
Distributing
摩根大通台灣摩根士丹利永豐金證券國泰證券凱基-台北港商野村
Desks
own scale
統一兆豐證券凱基-城中國泰-台中
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 凱基-信義 +2,484
    sold 11%· still adding
  • 美商高盛 +1,475
    sold 9%· still adding
  • 國票-長城 +1,111
    sold 2%
  • 宏遠證券 +801
    sold 6%
  • 新光-台南 +495
    sold 3%
  • 玉山-城中 +487
    sold 8%

Distributing

  • 摩根大通 1,430 left
    sold 35%· ~19 sessions to clear
  • 台灣摩根士丹利 262 left
    sold 88%· ~4 sessions to clear
  • 永豐金證券 1,072 left
    sold 33%· ~26 sessions to clear
  • 國泰證券 903 left
    sold 37%· paused recently
  • 凱基-台北 145 left
    sold 90%· ~3 sessions to clear
  • 港商野村 115 left
    sold 85%· ~10 sessions to clear

Desks

  • 統一 -972
    unclassified
  • 兆豐證券 -678
    unclassified
  • 凱基-城中 -604
    unclassified
  • 國泰-台中 -429
    unclassified
Still selling 3,938 lots ~196 sessions to bottom at most
Recent buy/sell force +1,908 absorbed / -3,139 sold sellers slightly ahead
Hedge-desk net short -392 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 57-5.3% -3.4% 28.1% +6.6%
20-40 151-11% -10.1% 31.1% -6.7%
40-60 259-5% -5.3% 32.8% -40.2%
60-80 414+26.4% +1.2% 51.4% +5.1%
80-100 You are here623+43.3% +47.1% 74.3% +20.3%

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 ≈ 1838.46, at the 99.8th 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
Insufficient data
(14d)
-7.5%
Win rate 30.1% Excess -17.4%
193d
Now
+14.1%
Win rate 61.6% Excess +4.7%
693d
60-day momentum down
-5.8%
Win rate 18.1% Excess -8.8%
127d
-1.9%
Win rate 41.4% Excess -16.9%
215d
+35%
Win rate 80.1% Excess +21.7%
382d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 693 historical days, 120-day forward avg gained 14.1%, win rate 61.6%, beat the market by 4.7%.

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.

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.

14 times historically; 60-day forward avg +5.46%, win rate 42.9%, beating the market by -0.1 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).

44 times historically; 60-day forward avg +2.78%, win rate 52.3%, beating the market by -0.08 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.

39 times historically; 60-day forward avg +9.37%, win rate 53.8%, beating the market by +4.18 pts on average.

What does 訊芯-KY do? Company profile

半導體業;系統級封裝(SiP)、高速光纖收發模組、CPO與各型積體電路模組封裝測試 台灣證券交易所上市

Overview

6451 對應證券為訊芯-KY,為台灣證券交易所上市普通股,非ETF、ETN、權證或特別股。公司全名為訊芯科技控股股份有限公司,英文名 ShunSin Technology Holdings Limited,為鴻海集團旗下系統模組封裝測試公司。公司官網揭露控股公司成立於2008年;中山主要子公司訊芯電子科技(中山)有限公司位於廣東省中山市火炬開發區,原始營運基礎可追溯至1999年。台灣辦公地址為台北市信義區光復南路495號11樓之5;中山廠地址為廣東省中山市火炬開發區建業東路9號。上市日期為2015年1月26日。臺灣證券交易所投資資訊中心揭露實收資本額約新台幣11.2167918億元;鉅亨網公司資料曾列實收資本額約新台幣10.74648億元,兩者時點不同,應以公開資訊觀測站與交易所最新公告為準。董事長為蔣尚義,總經理為徐文一。董事會由7席董事組成,含4席法人董事代表與3席獨立董事。主要股東依公司官網2025年3月31日股東名簿,Foxconn (Far East) Limited 持有63,964,800股、持股59.52%,為最大股東;前十大股東合計持股65.03%。員工規模方面,公司官網未在研究時點揭露合併員工總數;104人力銀行資料顯示英屬開曼群島商訊芯科技台灣分公司頁面載有員工數2000人、訊芸科技頁面載有1000人,因非公司年報正式口徑,僅作參考。

Business

訊芯-KY主要從事系統模組封裝產品及其他各型積體電路模組之封裝、測試及銷售,定位為專業半導體模組封裝測試與光通訊整合製造服務商。公司官網列示產品包含系統級封裝模組(SiP)、光收發模組、CPO、MEMS模組與感測器;中山子公司產品與服務涵蓋射頻功率放大器、WiFi模組、厚膜混合積體電路、汽車電子、人臉辨識模組、聲學產品、智慧標籤、穿戴式系統模組、光感模組、扇出型系統模組、智慧眼鏡模組等。SiP技術是將處理器、記憶體、感測器、被動元件等多顆不同功能元件整合於單一封裝內,應用於4G/5G前端模組、多模多頻功率放大模組、無線網路前端模組、藍牙、GPS、DC-DC轉換器等。測試服務涵蓋CP晶圓測試與FT成品測試,公司官網宣稱FT月產能可達8000萬顆、CP月產能逾4000片,並在光感測器測試具規模優勢。營收結構方面,MoneyDJ整理之2024年產品營收占比為高速光纖收發模組59%、SiP與感測器41%;Treelazy彙整2025年度年報資料顯示高速光纖收發模組約46.36億元、占61.55%,SiP與感測器約28.96億元、占38.45%,但該年報連結與日期需再以公開資訊觀測站原始檔核對。商業模式以客戶委託設計、封裝、測試與量產交付為主,並逐步往光器件、FAU、Transceiver、DPS到CPO整合封裝的一站式Turnkey服務延伸。主要終端應用包括AI資料中心、高速網通、雲端服務供應商CSP基礎設施、智慧手機、穿戴裝置、物聯網、車用電子與光感測應用。主要客戶多未具名;公開新聞僅可確認公司已向中國與北美客戶出貨51.2T CPO,並與終端客戶進行102.4T CPO測試。

Outlook 2025–2028

2025至2028年展望核心在高速光通訊、CPO、SiP與感測器整合封裝。2025年受AI伺服器與雲端資料中心升級推動,400G光收發模組仍為主要出貨規格,產品組合逐步往800G、1.6T與CPO演進。2025年11月法說會新聞指出,51.2T CPO已進入小量量產並開始向中國與北美客戶出貨,102.4T CPO完成NPI並交由終端客戶測試;總經理徐文一表示,受惠AI帶動光纖模組與SiP業務成長,2026年營收有望年增雙位數。公司產能布局採China+1策略,中山、中國其他據點與越南產能互補;公開報導指出越南河內或北江相關廠區供應100G/200G光纖收發模組,光州廠規劃400G/800G光纖收發模組,雲中廠與光州廠亦投入SiP封裝產線。中長期成長動能來自CSP擴大AI基礎建設投資、自研ASIC與LLM算力需求、資料中心由800G往1.6T與CPO升級、CPO高頻寬低功耗趨勢、SiP小型化與高整合度需求、MEMS在智慧穿戴與車用電子擴大,以及PMIC與金屬導線架封裝應用擴張。2027至2028年若CPO完成由小量驗證走向規模量產,公司可能受惠高階光通訊封裝與Turnkey交付需求;但該段屬產業推估,尚待客戶導入速度、良率與產能開出驗證。主要風險包括:CPO標準與技術路線變動、CSP資本支出循環、客戶集中與議價壓力、光通訊模組價格競爭、良率與量產爬坡不確定性、越南新廠折舊與費用壓力、台幣匯率波動、地緣政治與關稅風險、上游光元件與基板供應穩定度,以及公司揭露之主要客戶多未具名導致外部驗證有限。

Supply Chain

Upstream
  • 未揭露之線路板與封裝基板供應商 公司設計中心頁面表示有若干知名線路板供應商,分布於台灣、中國、日本與韓國,可提供層壓板、無核心層薄板、軟板與低溫共燒陶瓷板;未揭露具名供應商。
  • 未揭露之晶片、被動元件與光器件供應商 SiP需整合處理器、記憶體、感測器、電阻、電容等元件;高速光收發與CPO需光器件、FAU、Transceiver、DPS等零組件。公開資料未確認直接供應商名單。
  • 上詮光纖通信股份有限公司 3363 台股上櫃光通訊FAU與光纖陣列相關公司,屬CPO/矽光子產業鏈上游或鄰近光元件環節;未確認為訊芯直接供應商。
  • 聯亞光電工業股份有限公司 3081 台股上櫃InP磊晶、雷射與光通訊元件公司,屬光通訊上游材料與元件環節;未確認為訊芯直接供應商。
  • 鴻海精密工業股份有限公司 2317 鴻海透過Foxconn (Far East) Limited為訊芯最大股東;公開報導指出訊芯可在鴻海集團內找到上下游合作夥伴,並與鴻海在SiP、光收發模組、矽光子與CPO技術上密切合作,關係兼具股東、集團資源與供應鏈協同。
Downstream
  • 北美與中國雲端服務供應商(CSP)及終端客戶 2025年11月法說新聞指出51.2T CPO已小量量產並向中國與北美客戶出貨,102.4T CPO完成NPI並交終端客戶測試;公司未公開客戶名稱。
  • 鴻海精密工業股份有限公司 2317 公開報導指出鴻海從上游材料、半導體製造、封測到下游模組與系統出海口均有布局,訊芯可透過鴻海集團客戶與協力廠商合作;此為集團協同與下游系統出海口關係,不等同已揭露單一銷售客戶。
  • 國際智慧手機、穿戴裝置、物聯網與車用電子客戶 SiP、MEMS、光感測器、PMIC與車用感測器應用所對應終端市場;公司官網稱客戶群遍及美洲、亞洲、歐洲,為眾多國際知名企業合作夥伴,但未揭露具名客戶。
  • AI資料中心與高速網通設備供應鏈 高速光纖收發模組與CPO主要服務AI-HPC、資料中心Scale-up與高速互連需求;實際系統廠或網通設備客戶未完整揭露。

Competitors

Sources(18)

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.