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Help me set up FinLab and analyze 3321 同泰. Please read: https://finlab.finance/en/setup?stock=3321

3321

同泰 Electronic Components As of 2026-06-17 Updated daily after market close

quality needs a look, premium valuation.

This page refreshes daily after the close. Add 同泰 to your watchlist to track signal changes on your next visit.
Valuation 20Quality 7Growth 78Momentum 85Chips 82

Is 同泰 a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 13th market percentile. Latest quarterly ROE ≈ -8.6%.

  • Valuation is high.PE is in the 83th market percentile.

  • Foreign investors are net buying.Foreign 20-day net flow ≈ 6.5% of volume (net buy).

  • Strong revenue growth.Latest monthly revenue YoY ≈ 36.4%, above the 20% growth threshold.

  • Signals are active now.On the latest data, signals such as 252-day price high, Revenue YoY ≥ 20% are active — see the historical forward returns after each occurrence below.

Chip flow

Bullish +0.38
BearishNeutralBullish

Single-sided accumulation, concentration rising — bullish

  • Single-sided accumulation, concentration rising — bullish
  • 群益金鼎-館前 holds 886 lots
  • sellers have 597 lots left, ~145 sessions to clear

Window from 2026-01-17 · Price +16% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 群益金鼎-館前 has accumulated 886 lots since the start (sold 0%), still adding.
  • Main distributor 凱基-台北 peaked at 412 lots, has sold 28%, 296 left, paused recently.
  • TDCC big holders (absolute) >1000-lot holders +1.83pp, mid holders -4, retail +1.77pp — concentration shifting upward.
  • Foreign hedge-desk net short Net short -660 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
群益金鼎-館前台灣摩根士丹利摩根大通元大-路竹群益金鼎-新竹元大-豐原
Distributing
凱基-台北元大-岡山玉山-桃園元大-竹科富邦-新竹中國信託-三重
Desks
own scale
永豐金-萬盛台新-屏東群益金鼎-東門凱基-桃園
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 群益金鼎-館前 +886
    sold 0%· still adding
  • 台灣摩根士丹利 +595
    sold 0%· still adding
  • 摩根大通 +460
    sold 8%· still adding
  • 元大-路竹 +333
    sold 0%· still adding
  • 群益金鼎-新竹 +281
    sold 0%
  • 元大-豐原 +218
    sold 0%· still adding

Distributing

  • 凱基-台北 296 left
    sold 28%· paused recently
  • 元大-岡山 160 left
    sold 45%· ~14 sessions to clear
  • 玉山-桃園 176 left
    sold 30%· paused recently
  • 元大-竹科 29 left
    sold 86%· ~145 sessions to clear
  • 富邦-新竹 25 left
    sold 87%· ~2 sessions to clear
  • 中國信託-三重 98 left
    sold 45%· ~15 sessions to clear

Desks

  • 永豐金-萬盛 -671
    unclassified
  • 台新-屏東 -565
    unclassified
  • 群益金鼎-東門 -319
    unclassified
  • 凱基-桃園 -280
    unclassified
Still selling 597 lots ~145 sessions to bottom at most
Recent buy/sell force +2,728 absorbed / -605 sold buyers slightly ahead
Hedge-desk net short -655 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.

252-day price high (breakout)

Active

Adjusted close makes a new 252-day high; repeats within 20 days counted once.

8 historical occurrences (since 2017-07-20)
Average forward return after 252-day price high (breakout)。20-day: Win 0%, Sample 7, Median -14.01%, Excess -14.53%, Beat mkt rate 0%;60-day: Win 0%, Sample 7, Median -18.42%, Excess -21.93%, Beat mkt rate 0%;120-day: Win 0%, Sample 7, Median -25.13%, Excess -33.88%, Beat mkt rate 0%

120 days after: historical avg -26.75%

20-day -12.13%
60-day -19.22%
120-day -26.75%
20-day
60-day
120-day
Win
0%
0%
0%
Sample
7
7
7
Median
-14.01%
-18.42%
-25.13%
Excess
-14.53%
-21.93%
-33.88%
Beat mkt rate
0%
0%
0%

Over 7 occurrences, 120-day forward avg declined 26.75%, lagged the market by 33.88 pts; win rate 0%.

Monthly revenue YoY ≥ 20% (from filing deadline)

Active · now 36.44%

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

35 historical occurrences (since 2015-12-15)
Average forward return after Monthly revenue YoY ≥ 20% (from filing deadline)。20-day: Win 33.3%, Sample 30, Median -2.3%, Excess -2.54%, Beat mkt rate 33.3%;60-day: Win 26.7%, Sample 30, Median -11.04%, Excess -11.75%, Beat mkt rate 20%;120-day: Win 36.7%, Sample 30, Median -6.29%, Excess -20.14%, Beat mkt rate 13.3%

120 days after: historical avg -8.88%

20-day -1.62%
60-day -8.44%
120-day -8.88%
20-day
60-day
120-day
Win
33.3%
26.7%
36.7%
Sample
30
30
30
Median
-2.3%
-11.04%
-6.29%
Excess
-2.54%
-11.75%
-20.14%
Beat mkt rate
33.3%
20%
13.3%

Over 30 occurrences, 120-day forward avg declined 8.88%, lagged the market by 20.14 pts; win rate 36.7%.

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.

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.

27 times historically; 60-day forward avg -0.72%, win rate 38.5%, beating the market by -5.72 pts on average.

What does 同泰 do? Company profile

電子零組件業;軟性印刷電路板(FPC)/PCB製造 台灣證券交易所上市

Overview

3321 對應證券為同泰,係台灣證券交易所上市普通股。公司成立於1990年11月19日,上市日期為2015年12月15日,統一編號23983947。TWSE開放資料顯示董事長為簡山傑、總經理兼發言人為曾山一,普通股每股面額新台幣10元,實收資本額861,137,690元,已發行普通股數86,113,769股;公司英文簡稱UNIFLEX。年報列示桃園總部位於桃園市桃園區興邦路38號,台中廠區包括台中市大甲區東二街28號、青年路123號、工二路33號,中國同揚廠位於中國江蘇揚州經濟開發區華揚西路77號;TWSE公司基本資料住址為台中市大甲區東二街28號。截至2026年4月27日,集團從業員工合計1,242人,平均年齡35.64歲、平均服務年資6.44年。年報所列主要股東為欣興電子13,234,997股、15.37%,欣揚投資5,950,528股、6.91%,台灣表面黏著科技4,075,105股、4.73%,劉益汶3,615,607股、4.20%,高漢隆2,010,939股、2.34%,陳碧惠1,142,029股、1.33%,曾山一979,086股、1.14%,呂明富924,640股、1.07%,黃榮安789,355股、0.92%,李光偉748,096股、0.87%。公司於2025年8月減資彌補虧損440,460,240元,實收股本降至531,137,690元,並於2026年2月現金增資330,000,000元後回升至861,137,690元。

Business

同泰為專業軟性印刷電路板(Flexible Print Circuit, FPC)製造商,主要從事多層及軟式印刷電路板之製造、加工與買賣,並提供表面零件黏著(SMT)服務。2025年(民國114年)營收淨額2,145,029仟元,其中軟性印刷電路板2,143,229仟元、占99.92%,其他1,800仟元、占0.08%;銷售地區為台灣490,827仟元、占22.88%,中國1,654,202仟元、占77.12%。產品應用包括汽車電子、eReader、eNote、電子貨架標籤ESL、平板、筆記型電腦、Mobile Phone、工控、高速/高頻、元宇宙概念產品、醫療健康與健身、無人機與遊戲機等。公司官網補充軟板應用於資訊產品、通訊產品、消費性電子、車用影音系統/天線/儀表板/車燈,以及醫療內視鏡控制儀器等。商業模式以客製化FPC製造、配合客戶設計與量產、兩岸與海外據點服務客戶為主。2025年主要銷貨客戶以匿名揭露:客戶A銷售652,259仟元、占30.41%,客戶丁354,474仟元、占16.53%,第三大客戶占9.17%;年報稱近二年主要客戶無重大變化,主要銷售對象多為知名大廠但未具名。主要原料為FCCL、覆蓋膜、金鹽及電子元件等,2025年前三大進貨廠商占比分別為9.55%、7.64%、5.73%,未有任一供應商占進貨總額10%以上。2025年營業收入較2024年1,966,140仟元增加9.10%,毛利130,932仟元,稅後淨損180,132仟元,EPS為-3.36元,虧損較2024年縮小但仍未轉盈。

Outlook 2025–2028

2025至2028年展望以復甦、利基應用與財務改善並行。年報指出2025年公司維持eReader、eNote、ESL、PAD、NB、車載CID與車燈等既有產品,並持續佈局智慧眼鏡、機器人靈巧手、AI液冷模組及CPO(Co-Packaged Optics),同時深耕國內外品牌客戶與既有客戶服務,以多元化行銷通路分散風險。技術方向包括高速高頻電路板訊號傳輸、低能耗及高精度軟性電路板製程、自動化製程、測試儀器及新材料新製程評估;2026年預計研發支出約新台幣8,000萬元。產業面,年報引用Prismark等資料稱2025年全球PCB產值約852億美元,2024至2028年PCB產值可望隨AI、高速運算、網通設備、高階HDI及IC載板需求回升,軟板市場則受汽車電子、通訊、穿戴裝置、機器人、無人機、物聯網、AI手機、摺疊機、AI伺服器高速連接與車載顯示/BMS/毫米波雷達需求帶動;年報並引用Grand View Research預期2025至2030年全球FPC市場規模以13.7%複合年成長。供給面,全球FPC產業往東南亞與中國以外據點分散,台日韓中廠商投資高階曝光、精密對位、雷射鑽孔、高頻測試與低損耗材料如LCP/MPI。主要風險包括:公司已連年虧損且獲利體質待改善;FPC低階消費產品面臨中國廠商產能擴張與價格壓力;主要銷貨客戶集中度仍高,2025年前二大客戶合計約46.94%;美元匯率、利率、銅價、FCCL及覆蓋膜等原物料價格波動;地緣政治、客戶China+1要求、供應鏈重組;車用及高頻高速產品需通過客戶認證與量產良率挑戰。公司2025年減資彌補虧損並於2026年現金增資,財務結構已有改善,但2025年仍為淨損,2026至2028能否轉盈取決於車用、AI/高速、高附加價值FPC量產比重與稼動率。

Supply Chain

Upstream
  • FCCL、覆蓋膜、金鹽及電子元件供應商 年報確認為同泰主要原料類別;公司未具名揭露供應商,且2025年無單一供應商占進貨總額10%以上。
  • 台虹科技股份有限公司 8039 台股掛牌軟板材料廠,產品含軟性銅箔基板與覆蓋膜,屬FPC產業上游材料代表;未由同泰年報確認為直接供應商。
  • 達邁科技股份有限公司 3645 台股掛牌聚醯亞胺薄膜材料廠,屬FPC上游PI膜材料鏈;未由同泰年報確認為直接供應商。
  • 金居開發股份有限公司 8358 台股上櫃銅箔廠,屬PCB/FPC上游銅箔材料鏈;未由同泰年報確認為直接供應商。
  • 欣興電子股份有限公司 3037 同泰最大股東,亦為PCB集團與關係企業;同泰年報與官網均顯示其為主要股東,產業上屬PCB製造與集團資源關係,非年報揭露之直接原料供應商。
Downstream
  • 客戶A 2025年同泰最大銷貨客戶,銷售652,259仟元、占全年銷貨淨額30.41%;年報匿名揭露,未揭示公司名稱或是否掛牌。
  • 客戶丁 2025年同泰第二大銷貨客戶,銷售354,474仟元、占全年銷貨淨額16.53%;年報匿名揭露,未揭示公司名稱或是否掛牌。
  • 系統廠及各類電子產品製造廠 年報定義同泰位於FPC中游,下游終端需求廠為系統廠及各類電子產品製造廠,應用包含汽車電子、電子書、電子標籤、筆電、手機、工控、醫療、無人機與遊戲機。
  • 模組廠 年報說明專業軟板供應商常以模組廠作為主要下游客戶,具有彈性生產、快速服務與終端產品應用多元特性;同泰未具名揭露實際模組客戶。

Competitors

Sources(12)

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.