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Help me set up FinLab and analyze 2106 建大. Please read: https://finlab.finance/en/setup?stock=2106

2106

建大 Rubber 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 建大 to your watchlist to track signal changes on your next visit.
Valuation 55Quality 35Growth 29Momentum 25Chips 70

Is 建大 a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 38th market percentile. Latest quarterly ROE ≈ 0.6%.

  • Valuation is high.PE is in the 90th market percentile; within its own history, PE is around the 99th percentile.

  • Foreign investors are net buying.Foreign 20-day net flow ≈ 3.3% of volume (net buy).

Chip flow

Neutral +0.04
BearishNeutralBullish

Institutional rotation, concentration steady — neutral

  • Institutional rotation, concentration steady — neutral
  • 合庫-嘉義 holds 1,170 lots
  • sellers have 891 lots left, ~329 sessions to clear

Window from 2026-01-17 · Price -14% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 合庫-嘉義 has accumulated 1,170 lots since the start (sold 0%), still adding.
  • Main distributor 美林 peaked at 492 lots, has sold 40%, 296 left, ~329 sessions to clear at the recent pace.
  • TDCC big holders (absolute) >1000-lot holders -0.61pp, mid holders +2, retail +0.56pp — little change.
  • Foreign hedge-desk net short Net short -2,519 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
合庫-嘉義新光-新竹台新華南永昌-大甲永豐金-桃園富邦-建國
Distributing
美林富邦-竹東新光永豐金-台中兆豐-員林兆豐-大同
Desks
own scale
兆豐-台中港華南永昌富邦證券新加坡商瑞銀
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 合庫-嘉義 +1,170
    sold 0%· still adding
  • 新光-新竹 +872
    sold 0%
  • 台新 +815
    sold 3%· still adding
  • 華南永昌-大甲 +550
    sold 0%· still adding
  • 永豐金-桃園 +493
    sold 0%
  • 富邦-建國 +455
    sold 0%· still adding

Distributing

  • 美林 296 left
    sold 40%· ~329 sessions to clear
  • 富邦-竹東 255 left
    sold 46%· ~12 sessions to clear
  • 新光 118 left
    sold 57%· ~35 sessions to clear
  • 永豐金-台中 127 left
    sold 50%· paused recently
  • 兆豐-員林 26 left
    sold 89%· ~1 sessions to clear
  • 兆豐-大同 145 left
    sold 26%· paused recently

Desks

  • 兆豐-台中港 -3,597
    unclassified
  • 華南永昌 -1,686
    unclassified
  • 富邦證券 -1,172
    unclassified
  • 新加坡商瑞銀 -1,092
    hedge desk · will cover
Still selling 891 lots ~329 sessions to bottom at most
Recent buy/sell force +2,301 absorbed / -623 sold buyers slightly ahead
Hedge-desk net short -2,277 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)

Weak direction: big-holder share fell while retail share rose.

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 0Insufficient data
20-40 157+9.3% +8.8% 88.5% +2.2%
40-60 396-4.1% -2.5% 37.9% -16.1%
60-80 845-8.5% -17% 28.3% -24.7%
80-100 You are here1377+2.7% +1.3% 53.4% -20.5%

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 ≈ 104.41, at the 98.6th 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)
-3.3%
Win rate 47.9% Excess -8.4%
353d
+4%
Win rate 48.7% Excess -7.1%
1015d
60-day momentum down
Insufficient data
(6d)
-2.3%
Win rate 47.7% Excess -5.2%
616d
Now
-2.2%
Win rate 39.1% Excess -15.8%
905d

Currently in “Expensive (own-history top 1/3) × 60-day momentum down”: across 905 historical days, 120-day forward avg declined 2.2%, win rate 39.1%, lagged the market by 15.8%.

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.

19 times historically; 60-day forward avg +6.49%, win rate 47.4%, beating the market by +1.86 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).

42 times historically; 60-day forward avg +1.22%, win rate 48.7%, beating the market by +1.17 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.

57 times historically; 60-day forward avg +0.62%, win rate 52.6%, beating the market by -3.44 pts on average.

What does 建大 do? Company profile

橡膠工業/輪胎製造 台灣證券交易所上市

Overview

2106 對應證券為建大工業股份有限公司,屬普通股,非 ETF、ETN、權證或特別股。公司成立於 1962/03/30,總部位於彰化縣員林市中山路一段146號,1990/12/20 股票上市。主要經營各類橡膠輪胎之製造、批發、零售。英文名稱為 Kenda Rubber Industrial Co., Ltd.,品牌為 KENDA。依 Yahoo 股市資料,董事長為楊啟仁、總經理為林建良,股本為新台幣 9,548,900,000 元,已發行普通股 954,890,000 股;公司 2026 Q2 法說資料揭露全球員工約 12,500 人,擁有 7 座輪胎生產工廠與 4 座研發中心,研發人員逾 300 人。主要生產基地分布於台灣、中國、越南、印尼;研發中心位於台灣、中國、美國、歐洲。2026/04/05 前十大股東以楊啟仁 9.56%、楊銀明 6.49%、楊敬一 4.82%、楊佳玲 3.15%、楊淑元 3.13%、楊瑩元 3.13%、楊琇雅 2.93%、楊淑婷 2.85%、楊雅婷 2.82%、思瑞投資 2.13% 為主,具家族持股色彩。

Business

建大以自有品牌 KENDA 銷售全球,產品涵蓋自行車內外胎、機車胎、速克達胎、工業用車胎、ATV/UTV 胎、高爾夫球車與割草機胎、農用胎、輕型卡車胎、乘用車輻射層胎、輪圈與相關橡膠製品。商業模式包含自有品牌銷售、替換胎市場、組車/配套胎市場,以及透過歐美輪圈據點提供輪胎加輪圈一條龍組裝服務。2025 年合併營收約新台幣 339.63 億元,年減約 0.7%,2023 至 2025 年大致回穩於 340 億元附近;2025 年地區營收占比約美國 38%、中國 27%、台灣 12%、越南 9%、其他 14%。產品別營收占比方面,2025 年機車/斜交/工業胎約 43%、汽車輻射層胎 PCR 約 38%、自行車胎約 19%;2026 年 1 至 5 月機車/斜交/工業胎占比升至 48%、PCR 降至 33%、自行車胎約 19%。公司財報揭露 2025 年無單一客戶收入達合併營收 10% 以上,表示客戶集中度不高。主要終端應用包括自行車、機車、汽車替換胎與配套胎、北美高爾夫球車/割草機/ATV/UTV、歐美輪圈與車隊替換需求。

Outlook 2025–2028

2025 年營運處於後疫情去庫存後的回穩階段,全年營收約新台幣 339.6 億元、年減 0.7%,但毛利率約 19.2%。2026 年第一季營收約 86.99 億元,1 至 5 月累計營收年增約 0.6%,毛利率回升至 19.8%,營業利益與淨利較 2025 年同期改善。2025 至 2028 年主要成長動能包括:一、機車/斜交/工業胎占比提高,北美高爾夫球車、割草機、ATV/UTV 與工業用車胎需求具支撐;二、PCR 聚焦歐美高價值替換胎,並以北美電動車品牌配套作為提升品牌能見度與技術門檻的機會,公司法說資料提及北美電動車品牌配套預計 2026 Q3 放量;三、台灣、中國、越南、印尼多國產能調度可降低單一產地關稅與貿易壁壘風險,其中越南供應歐洲有助避開中國輸歐輪胎反傾銷壓力;四、AI 模擬輪胎性能、3D 雕刻、大數據製程、NPT 免充氣胎、電動車胎、循環經濟材料等技術與 ESG 差異化可提升附加價值;五、深圳廠都市更新案可分配面積約 14.2 萬平方公尺,已列投資性不動產,後續回遷交付、招商與二期合作若順利,可能帶來非本業資產價值釋放。主要風險包括天然膠、合成膠、碳黑與油價連動導致原料成本波動;美國 232/301/122 等關稅與歐盟反傾銷政策變動;PCR 通路去化及美國市場需求波動;匯率波動;中國與東南亞輪胎同業價格競爭;電動車配套胎放量時程與實際客戶訂單不確定;循環材料與碳足跡法規投入可能增加短期成本。2027 至 2028 年具體財務預測未見公司正式量化指引,因此僅能以產業趨勢與公司策略推估。

Supply Chain

Upstream
  • 台橡股份有限公司 2103 台股上市合成橡膠廠,合成橡膠為輪胎主要原料之一;未查得公開資料確認其為建大直接供應商,列為上游原料類股關係。
  • 國際中橡投資控股股份有限公司 2104 台股上市碳黑與橡膠相關材料企業,碳黑為輪胎補強與耐磨關鍵材料;未查得公開資料確認其為建大直接供應商,列為上游原料類股關係。
  • 台塑石化股份有限公司 6505 台股上市石化上游企業,油品與石化原料價格影響合成橡膠、碳黑與輪胎成本;未查得公開資料確認其為直接供應商。
  • 南亞塑膠工業股份有限公司 1303 台股上市塑化與聚酯材料企業,聚酯纖維/工業材料可應用於輪胎補強材料供應鏈;未查得公開資料確認其為建大直接供應商。
  • 天然橡膠供應商 天然橡膠為輪胎主要原料,通常來自東南亞膠園、加工廠與貿易商;建大未公開逐一揭露主要天然橡膠供應商名稱。
Downstream
  • 巨大機械工業股份有限公司 9921 台股上市自行車品牌與製造商,屬自行車胎終端應用與組車產業鏈代表;未查得公開資料確認其為建大主要客戶。
  • 美利達工業股份有限公司 9914 台股上市自行車品牌與製造商,屬自行車胎終端應用與組車產業鏈代表;未查得公開資料確認其為建大主要客戶。
  • 三陽工業股份有限公司 2206 台股上市機車與汽車製造商,屬機車胎與配套胎可能下游產業代表;未查得公開資料確認其為建大主要客戶。
  • 裕隆汽車製造股份有限公司 2201 台股上市汽車製造商,屬汽車胎配套與替換胎終端應用產業鏈代表;未查得公開資料確認其為建大主要客戶。
  • 北美與歐洲輪胎經銷商、替換胎通路、車隊與電動車品牌客戶 公司營收以美國、中國、台灣、越南及其他海外市場為主,財報揭露無單一客戶占營收 10% 以上;北美電動車品牌配套、歐美替換胎與輪圈通路為公司法說提及的重要下游方向,但未揭露客戶名稱。

Competitors

  • 正新橡膠工業股份有限公司 2105 台股上市大型輪胎廠,品牌 MAXXIS/Cheng Shin,與建大在自行車胎、機車胎、汽車胎、工業胎等多品類競爭。
  • 南港輪胎股份有限公司 2101 台股上市輪胎廠,主要競爭領域包括乘用車胎、SUV/輕卡胎與替換胎市場。
  • 泰豐輪胎股份有限公司 2102 台股上市輪胎廠,與建大同屬台灣橡膠輪胎產業;需留意其營運與交易狀態變動。
  • 華豐橡膠工業股份有限公司 2109 台股上市輪胎與橡膠製品廠,產品涵蓋機車、自行車、農工與特種用途胎,與建大部分產品線重疊。
  • 米其林 Michelin 法國上市全球輪胎龍頭,非台股掛牌,於乘用車胎、高性能胎、商用胎與電動車胎等市場為國際競爭對手。
  • 普利司通 Bridgestone 日本上市全球輪胎龍頭,非台股掛牌,於汽車胎、商用胎與高階替換胎市場競爭。
  • 固特異 Goodyear 美國上市輪胎大廠,非台股掛牌,於北美替換胎、商用胎與乘用車胎市場競爭。
Sources(14)

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.