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6129

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

quality needs a look, premium valuation.

1 active signal
Revenue ≥20%
This page refreshes daily after the close. Add 普誠 to your watchlist to track signal changes on your next visit.
Valuation 27Quality 12Growth 71Momentum 52Chips 26

Is 普誠 a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 12th market percentile. Latest quarterly ROE ≈ -1.7%.

  • Valuation is high.PE is in the 88th market percentile; within its own history, PE is around the 82th percentile.

  • Foreign investors are net selling.Foreign 20-day net flow ≈ -1.5% of volume (net sell).

  • Strong revenue growth.Latest monthly revenue YoY ≈ 27.0%, 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 +0.15
BearishNeutralBullish

Institutional rotation, concentration steady — bullish

  • Institutional rotation, concentration steady — bullish
  • 摩根大通 holds 534 lots
  • sellers have 1,556 lots left, ~119 sessions to clear

Window from 2026-01-17 · Price +5% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 摩根大通 has accumulated 534 lots since the start (sold 0%), still adding.
  • Main distributor 凱基-台北 peaked at 686 lots, has sold 46%, 372 left, ~44 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders +0.00pp, mid holders +0, retail -0.06pp — little change.
  • Foreign hedge-desk net short Net short -252 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
摩根大通元大-松江元富-大裕永豐金-板盛凱基-士林元大-花蓮
Distributing
凱基-台北新加坡商瑞銀台灣摩根士丹利亞東-板橋台新元大證券
Desks
own scale
合庫-桃園元富-彰化玉山-台南美商高盛
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 摩根大通 +534
    sold 0%· still adding
  • 元大-松江 +183
    sold 0%· still adding
  • 元富-大裕 +181
    sold 0%
  • 永豐金-板盛 +149
    sold 0%
  • 凱基-士林 +142
    sold 7%· still adding
  • 元大-花蓮 +126
    sold 0%· still adding

Distributing

  • 凱基-台北 372 left
    sold 46%· ~44 sessions to clear
  • 新加坡商瑞銀 454 left
    sold 27%· ~49 sessions to clear
  • 台灣摩根士丹利 282 left
    sold 43%· paused recently
  • 亞東-板橋 202 left
    sold 51%· ~119 sessions to clear
  • 台新 63 left
    sold 82%· ~7 sessions to clear
  • 元大證券 181 left
    sold 28%· ~44 sessions to clear

Desks

  • 合庫-桃園 -413
    unclassified
  • 元富-彰化 -327
    unclassified
  • 玉山-台南 -235
    unclassified
  • 美商高盛 -187
    hedge desk · will cover
Still selling 1,556 lots ~119 sessions to bottom at most
Recent buy/sell force +1,352 absorbed / -629 sold buyers slightly ahead
Hedge-desk net short -211 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

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 26.96%

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

47 historical occurrences (since 2007-04-23)
Average forward return after Monthly revenue YoY ≥ 20% (from filing deadline)。20-day: Win 55.6%, Sample 45, Median +1.37%, Excess +4.61%, Beat mkt rate 51.1%；60-day: Win 58.1%, Sample 43, Median +4.55%, Excess +10.39%, Beat mkt rate 53.5%；120-day: Win 51.2%, Sample 41, Median +1.49%, Excess +7.54%, Beat mkt rate 39%

120 days after: historical avg +13.14%

20-day +6.21%
60-day +13.69%
120-day +13.14%
20-day
60-day
120-day
Win
55.6%
58.1%
51.2%
Sample
45
43
41
Median
+1.37%
+4.55%
+1.49%
Excess
+4.61%
+10.39%
+7.54%
Beat mkt rate
51.1%
53.5%
39%

Over 41 occurrences, 120-day forward avg gained 13.14%, beat the market by 7.54 pts; win rate 51.2%.

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 0Insufficient data
20-40 35+179.3% +170.1% 97.1% +51.9%
40-60 192-5.3% -2.5% 39.6% -29.4%
60-80 306+17.2% -5.9% 39.5% -7.1%
80-100 You are here339+142.7% +34.6% 66.1% +80.2%

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 ≈ 73.03, at the 81.9th 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
(0d)
+0.7%
Win rate 35.5% Excess -9.8%
169d
+64.7%
Win rate 53.9% Excess +35.3%
271d
60-day momentum down
Insufficient data
(14d)
-1.8%
Win rate 36.5% Excess -9.6%
285d
Now
+61.9%
Win rate 64% Excess +29%
253d

Currently in “Expensive (own-history top 1/3) × 60-day momentum down”: across 253 historical days, 120-day forward avg gained 61.9%, win rate 64%, beat the market by 29%.

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.

16 times historically; 60-day forward avg +14.26%, win rate 50%, beating the market by +11.02 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.

58 times historically; 60-day forward avg +6.44%, win rate 49.1%, beating the market by +2.24 pts on average.

What does 普誠 do? Company profile

半導體業／IC設計 上櫃（櫃買中心）

Overview

普誠科技股份有限公司為台灣上櫃普通股，股票代號6129，英文名稱 Princeton Technology Corporation，英文簡稱 PTC。公司成立於1986年5月15日，2001年12月25日上櫃，總部位於新北市新店區寶橋路233-1號2樓；主要營業項目為消費性IC之設計、製造與銷售，實收資本額新台幣1,809,436,750元，已發行普通股180,943,675股。公開資料顯示董事長為姜長安，總經理為李國維，發言人為胡玉珍。公司官網與人力銀行資料顯示，普誠為專業IC設計公司，設有台灣研發據點，並為服務亞洲市場設立深圳、成都子公司及日本辦事處。主要股東與持股方面，公開股市資料顯示董監持股約10.24%至10.27%；董事長姜長安曾揭露持股11,557,256股，董事泰芯股份有限公司曾揭露持股6,546,000股，但最新完整前十大股東名單未能在公開可檢索來源中逐項確認。員工規模未在本次可查公開資料中取得可靠數字。

Business

普誠定位為車用與消費性IC設計業者，採Fabless模式，核心活動為IC研發設計、委外晶圓製造、封裝測試與銷售。公司官網列示產品包含顯示器驅動IC、MCU、馬達驅動IC、LED驅動IC、電源管理IC、RF、多媒體音訊、編解碼、遙控與ASIC等；應用涵蓋車用儀表板、HUD、車燈、車用多媒體、空調執行器、消費影音、數位相機、監控攝影機、家電、工具機、馬達控制、照明與電源管理等。2022年法說／新聞資料曾揭露產品線營收占比約為顯示器驅動晶片48%、馬達驅動晶片26%、音頻晶片10%、照明驅動晶片6%，當時車用占比約四成且以日本客戶為主；2023年MoneyDJ報導指出LCD驅動IC約67%、馬達驅動IC約17%、LED照明驅動IC約7%，應用以車用為主，日本與中國市場為主要方向。2024年公司受日本HUD客戶庫存調整影響，合併營收約新台幣11.46億元、年減約31%，其中普誠本體約7.7億元、子公司啟臣約3.76億元，啟臣主要為電源管理IC並以中國市場為主。2025年全年合併營收公開月營收資料約11.159億元、年減約3.04%；2026年前5月月營收年增多數轉正，顯示需求有低基期修復跡象。

Outlook 2025–2028

2025至2028年展望可分為修復、產品轉型與車用長線三部分。成長動能方面，車用LED照明、HUD、車用顯示、馬達控制、MCU與電源管理IC仍是主要題材；公司過去已量產車用LED頭燈／尾燈驅動IC、車用儀表板LED驅動IC、DC馬達驅動IC，並曾與日本客戶開發HUD面板驅動與馬達驅動IC。若日本車用客戶庫存於2025至2026年逐步去化，車用拉貨恢復將是最直接的營收修復來源。新產品方面，公司官網2026年MCU產品頁顯示近年聚焦微控制器及相關應用晶片，應用於工控、家電、車用與消費電子；電源管理產品亦涵蓋AC-DC、DC-DC、電池管理、LDO與保護元件，可補強既有顯示／馬達／照明產品組合。產業趨勢方面，電動車與智慧座艙推升車用顯示、HUD、LED車燈與馬達控制數量，家電與工具機電動化亦有利BLDC與馬達驅動IC；但成熟製程IC競爭激烈，車用認證時間長、客戶集中與庫存週期會造成營收波動。主要風險包括：日本HUD客戶庫存調整時間超預期、消費性電子復甦不穩、中國車市價格競爭導致IC議價壓力、晶圓代工與封測成本變動、匯率波動、研發費用率偏高造成轉盈壓力，以及中小型IC設計公司在產品規模與客戶分散度上的限制。2027至2028年若MCU、車用LED與電源管理產品擴大導入，營收結構有機會由單一顯示驅動依賴轉向顯示、馬達、照明、MCU與電源管理較均衡；但此屬依既有產品路線與產業趨勢推估，尚未取得公司對2027至2028年的量化財測。

Supply Chain

Upstream
  • 台灣多家晶圓代工廠 公司曾揭露投片包含台灣多家代工廠，使用6吋、8吋製程並開始少量12吋設計；公開報導未具名，因此不填特定股票代號。
  • 日本晶圓代工廠 公司曾揭露投片對象包含一家日本廠商；未公開具名，推定為成熟製程晶圓代工供應鏈。
  • 封裝測試供應夥伴 公開報導指出公司因應晶圓代工、封測產能吃緊而多元化封測供應夥伴；未取得直接供應商名單。
  • EDA／IP與半導體設計服務供應商 IC設計公司一般需使用EDA工具、IP與測試驗證服務；本次未查得普誠具名供應商，列為產業鏈關係而非確認直接供應商。
Downstream
  • 日本車用電子客戶 公司歷史法說與新聞資料指出車電以日本客戶為主，曾有日本客戶貢獻營收占比約36%；產品包括HUD、車用顯示與車燈相關IC，客戶名稱未公開。
  • 中國車用大燈與前裝供應鏈客戶 報導指出普誠車用LED驅動IC打入中國大型車用大燈與前裝供應鏈；未公開具名。
  • 成都啟臣微電子股份有限公司 普誠持股之中國子公司／轉投資，產品以電源管理IC為主，銷售市場集中於中國；非台股掛牌。
  • 消費性電子、家電、工具機與監控設備客戶 公司產品應用於數位電視、家庭影音、數位相機、監控攝影機、家電、工具機與馬達控制設備；終端客戶多未公開具名。

Competitors

  • 聯詠 3034 台股上市IC設計公司，主要競爭於顯示驅動IC與面板相關控制IC。
  • 矽創 8016 台股上櫃IC設計公司，產品涵蓋顯示驅動IC、感測與車用／工控相關IC，與普誠部分產品線重疊。
  • 天鈺 4961 台股上市驅動IC與電源管理IC設計公司，於顯示驅動與PMIC領域具競爭關係。
  • 瑞鼎 3592 台股上市顯示驅動IC設計公司，主要聚焦面板顯示驅動，屬顯示IC同業。
  • 敦泰 3545 台股上市IC設計公司，產品含觸控與顯示整合晶片，屬顯示相關IC同業。
  • 晶宏 3141 台股上櫃顯示驅動IC設計公司，與普誠在中小尺寸與特定顯示驅動領域有同業比較關係。
  • 茂達 6138 台股上櫃類比／電源管理與馬達驅動IC公司，與普誠馬達驅動、電源管理產品部分重疊。
  • 盛群 6202 台股上市MCU設計公司，與普誠新推MCU及家電、工控、消費電子應用有部分競爭。
  • 凌通 4952 台股上市MCU與消費性IC設計公司，與普誠消費IC、控制IC應用部分重疊。
  • 聚積 3527 台股上櫃LED驅動IC公司，與普誠LED照明／車用LED驅動產品有同業比較關係。
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.