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Help me set up FinLab and analyze 3661 世芯-KY. Please read: https://finlab.finance/en/setup?stock=3661

3661

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

strong quality, premium valuation, no active signal today.

This page refreshes daily after the close. Add 世芯-KY to your watchlist to track signal changes on your next visit.
Valuation 20Quality 83Growth 7Momentum 76Chips 13

Is 世芯-KY a buy? Fundamentals and valuation first

  • Top-tier profitability.Operating margin beats ~94% of the market. Latest quarterly ROE ≈ 3.4%.

  • Valuation is high.PE is in the 81th market percentile; within its own history, PE is around the 87th percentile.

  • Foreign investors are net selling.Foreign 20-day net flow ≈ -4.1% of volume (net sell).

Chip flow

Neutral +0.02
BearishNeutralBullish

Institutional rotation, concentration steady — neutral

  • Institutional rotation, concentration steady — neutral
  • 港商麥格理 holds 2,797 lots
  • sellers have 1,576 lots left, ~229 sessions to clear

Window from 2026-01-17 · Price +26% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 港商麥格理 has accumulated 2,797 lots since the start (sold 2%), still adding.
  • Main distributor 台灣摩根士丹利 peaked at 1,146 lots, has sold 40%, 685 left, ~28 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders -1.60pp, mid holders +5, retail -3.41pp — little change.
  • Foreign hedge-desk net short Net short -1,123 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
港商麥格理美林永豐金-匯立元大-忠孝鼎富大和國泰元大-新生
Distributing
台灣摩根士丹利美商高盛港商野村新加坡商瑞銀法銀巴黎元大-土城永寧
Desks
own scale
摩根大通統一國泰證券花旗環球
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 港商麥格理 +2,797
    sold 2%· still adding
  • 美林 +1,236
    sold 15%
  • 永豐金-匯立 +484
    sold 20%· still adding
  • 元大-忠孝鼎富 +115
    sold 0%· still adding
  • 大和國泰 +92
    sold 0%· still adding
  • 元大-新生 +79
    sold 0%· still adding

Distributing

  • 台灣摩根士丹利 685 left
    sold 40%· ~28 sessions to clear
  • 美商高盛 360 left
    sold 59%· ~10 sessions to clear
  • 港商野村 229 left
    sold 57%· ~229 sessions to clear
  • 新加坡商瑞銀 299 left
    sold 43%· paused recently
  • 法銀巴黎 179 left
    sold 43%· ~179 sessions to clear
  • 元大-土城永寧 52 left
    sold 77%· paused recently

Desks

  • 摩根大通 -922
    hedge desk · will cover
  • 統一 -869
    unclassified
  • 國泰證券 -769
    unclassified
  • 花旗環球 -714
    hedge desk · will cover
Still selling 1,576 lots ~229 sessions to bottom at most
Recent buy/sell force +621 absorbed / -760 sold sellers slightly ahead
Hedge-desk net short -922 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)

Mixed direction: big-holder and retail changes are not aligned.

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 88+192.2% +191.9% 100% +171.8%
20-40 97+106.6% +77.6% 100% +61%
40-60 290+175.1% +182.6% 100% +148.7%
60-80 435+101.9% +43% 81.6% +88.4%
80-100 You are here694+65.9% +24% 65.1% +40.3%

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 ≈ 63.32, at the 86.7th 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
+54%
Win rate 100% Excess +45.8%
40d
+71.4%
Win rate 84.7% Excess +58%
281d
Now
+34.8%
Win rate 62.8% Excess +23.6%
794d
60-day momentum down
+31.7%
Win rate 94.6% Excess +11.7%
74d
+52.7%
Win rate 94.3% Excess +40.1%
316d
+19.2%
Win rate 45.7% Excess +9.4%
219d

Currently in “Expensive (own-history top 1/3) × 60-day momentum up”: across 794 historical days, 120-day forward avg gained 34.8%, win rate 62.8%, beat the market by 23.6%.

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.

23 times historically; 60-day forward avg +15.8%, win rate 59.1%, beating the market by +9.79 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).

84 times historically; 60-day forward avg +19.54%, win rate 67.6%, beating the market by +14.62 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.

32 times historically; 60-day forward avg +33.22%, win rate 83.9%, beating the market by +26.09 pts on average.

What does 世芯-KY do? Company profile

半導體業;ASIC/SoC設計服務、IC與封裝設計及量產管理 上市(台灣證券交易所)

Overview

3661 對應證券為世芯-KY,為英屬開曼群島註冊、於台灣證券交易所上市之普通股,非ETF、ETN、權證或特別股。公司中文名稱為世芯電子股份有限公司,英文名稱 Alchip Technologies, Limited,成立於2003年2月27日,2014年10月28日上市,總部/主要營運據點位於台北市內湖區文湖街12號9樓。公司網站投資人頁面列示董事長與執行長為 Johnny Shen(沈翔霖),發言人為 Daniel Wang(王德善);公開股市資料亦列董事長、總經理為沈翔霖。官方2026年資料列資本額約新台幣813,341,480元;其他股市資訊站於2026年6月附近列資本額約新台幣8.21億元、發行股數約82,091,340股,兩者差異可能來自時點或股本變動。2024年報揭露截至2025年3月31日員工595人;2026年3月31日前十大股東包含新制勞工退休基金2.82%、沈翔霖2.30%、Government of Singapore-GOS-EFMC 1.91%、富邦人壽1.89%、元大台灣卓越50基金1.65%、iShares A.I. Innovation and Tech Active ETF 1.62%、安聯台灣科技基金1.29%、Vanguard Total International Stock Index Fund 1.28%、Vanguard Emerging Markets Stock Index Fund 1.21%、Bank SinoPac as Custodian for ACPF B LIMITED Investment Account 1.03%。

Business

世芯-KY是高階ASIC與SoC設計服務及量產管理公司,服務範圍涵蓋前端/後端設計、physical design、NRE、GDS交付後之晶圓製造、封裝、測試與量產管理。商業模式屬fabless ASIC turnkey/設計服務商:客戶多負責系統規格、演算法或部分前端設計,世芯承接後端實作、先進製程導入、IP整合、先進封裝與供應鏈管理,收入來自NRE與量產晶片出貨。2024年報揭露2024年營收結構為ASIC and Chip production新台幣515.86295億元、占99.27%;NRE新台幣3.65751億元、占0.70%;其他新台幣0.16524億元、占0.03%。官方2025全年財報新聞稿揭露2025年營收9.92億美元,較2024年16億美元下滑;2025年應用別HPC占83%、消費性應用占12%、利基與網通合計占4%;製程別2/3奈米占14%、7/5奈米占73%、16/12奈米與更成熟製程占12%;地區別北美占78%、亞太占8%、日本占8%、其他地區占6%。主要終端應用包含AI/HPC/超級電腦、雲端資料中心ASIC、網通設備、手機/消費性電子、娛樂裝置、車用、監控與醫療等。2024年報揭露主要客戶高度集中,2024年Customer A占營收60.16%、Customer B占21.18%,公司未公開客戶真名;2025與2026官方訊息多次提及北美AI/雲端客戶需求與3奈米AI accelerator出貨。

Outlook 2025–2028

2025年為產品交替與量產空窗期:官方新聞稿稱2025年營收下滑主因為limited production shipments,全年營收9.92億美元、EPS新台幣69.2元,但HPC/AI仍為核心,先進製程占比高。2026年展望轉強:官方2026年第一季新聞稿指出,Q1營收1.324億美元、淨利4,510萬美元,3/2奈米占Q1營收21%;沈翔霖表示北美AI相關設計需求強,AI設計由5/3奈米往3/2奈米移轉,2026年第2季動能轉強,第3季起營收與獲利季增可望明顯放大,主要來自北美3奈米AI accelerator出貨,以及年底前預期2奈米accelerator tape-out帶來的NRE。2026至2028中長期成長動能包括:雲端服務商為降低功耗與總持有成本而增加自研AI ASIC;3奈米AI加速器量產爬坡;2奈米設計平台、gate-all-around相關設計方法、2.5D/3DIC、CoWoS/SoIC、chiplet、die-to-die IP、HBM/PCIe/SerDes等高階IP與先進封裝能力;北美市場與AI/HPC需求;車用、網通與其他先進節點專案。2027至2028的具體營收與EPS未由公司正式長期指引量化;部分媒體與法人推估2奈米專案可能於2027後放量、2028形成高峰,但此屬市場推估,非公司保證。主要風險包括客戶集中、晶圓代工與先進封裝/載板產能、tape-out時程遞延、先進製程良率與設計複雜度、NRE認列季節性、匯率、資安與客戶機密保護、全球AI ASIC需求變化、出口管制與地緣政治。2024年報明確揭露主要晶圓來自台積電且未簽長約,若產能支援不足可能有短缺或中斷風險;2024年前兩大客戶合計占營收81.34%,銷售集中度高。

Supply Chain

Upstream
  • 台積電 2330 主要晶圓代工/晶圓供應商;2024年報明確揭露世芯主要原料為晶圓,主要向台灣積體電路製造股份有限公司採購,且與台積電在先進製程、後端設計研發、先進封裝與高階SoC合作密切。
  • 日月光投控 3711 封裝測試/OSAT產業鏈關係企業;世芯官方夥伴頁列封裝、測試為供應鏈合作類別,年報稱會與封裝/測試廠工程團隊早期協作,但未在可查資料中逐一公開廠名;日月光投控為台股上市封測龍頭,此項屬產業鏈推估,非公司點名。
  • 京元電子 2449 測試服務產業鏈關係企業;世芯營運流程需要晶圓探針、初測與終測,官方未點名個別測試廠,此項為台股上市測試服務同業/可能供應鏈關係推估。
  • Arm 矽智財/IP與生態系合作夥伴;世芯已加入Arm Total Design ecosystem,Arm為海外公司且非台股掛牌。
  • Synopsys EDA/IP產業鏈供應商類型;世芯業務高度依賴EDA工具與IP整合,Synopsys為美國上市公司,非台股掛牌;具體採購關係未由本次來源逐筆確認。
  • Cadence EDA/IP產業鏈供應商類型;Cadence為美國上市公司,非台股掛牌;具體採購關係未由本次來源逐筆確認。
Downstream
  • 北美大型雲端/AI客戶(公司未具名) 主要AI/HPC ASIC客戶群;2024年報以Customer A、Customer B匿名揭露,2024年分別占營收60.16%與21.18%;官方2026年Q1新聞稿指出北美AI相關設計需求強,2026下半年動能來自北美3奈米AI accelerator出貨。客戶真名未由公司公開確認。
  • 日本系統公司(公司未具名) HPC/超級電腦ASIC下游客戶類型;2024年報稱世芯已完成數個高效能運算裝置供日本系統公司使用並進入Green500前列,未揭露公司名稱,非台股掛牌資訊。
  • 中國CPU/系統公司(公司未具名) HPC專案客戶類型;2024年報稱公司曾為中國CPU製造商完成多個HPC專案,未揭露名稱,非台股掛牌資訊。
  • d-Matrix AI推論加速器合作/潛在下游客戶;2025年官方新聞稿宣布d-Matrix與世芯合作開發3D DRAM資料中心推論加速器,d-Matrix為未上市或非台股掛牌公司。
  • Ayar Labs AI資料中心CPO/光互連合作夥伴;2025年官方新聞稿宣布Ayar Labs與世芯合作推動co-packaged optics方案,Ayar Labs為未上市或非台股掛牌公司。
  • Astera Labs AI/雲端基礎設施連接晶片生態系合作夥伴;2025年官方新聞稿宣布Astera Labs與世芯策略合作,Astera Labs為美國上市公司,非台股掛牌。

Competitors

  • 創意電子 3443 台股上市ASIC設計服務與SoC設計服務公司,為世芯在先進製程ASIC設計服務、NRE與量產管理領域的主要台灣同業競爭者。
  • 智原科技 3035 台股上市ASIC設計服務與IP公司,成熟/特殊製程與客製化SoC市場競爭者。
  • 力旺電子 3529 台股上櫃矽智財公司,非完整ASIC turnkey同型競爭者,但在IP授權與嵌入式記憶體IP等設計生態系與世芯部分服務領域相關。
  • 聯發科 2454 台股上市IC設計龍頭;主業為標準產品SoC,但在客製化ASIC、AI ASIC與大型客戶客製晶片案上可能形成部分競合。
  • Broadcom 美國上市公司,全球客製化ASIC與AI/網通晶片重要競爭者,非台股掛牌。
  • Marvell Technology 美國上市公司,資料中心、網通與客製化矽晶片供應商,非台股掛牌。
  • Socionext 日本上市SoC/ASIC設計服務公司,非台股掛牌。
Sources(20)

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.