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Help me set up FinLab and analyze 3234 光環. Please read: https://finlab.finance/en/setup?stock=3234

3234

光環 Communications & Internet 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 光環 to your watchlist to track signal changes on your next visit.
Valuation 5Quality 7Growth 56Momentum 88Chips 74

Is 光環 a buy? Fundamentals and valuation first

  • Weak profitability.Operating margin is in the 9th market percentile. Latest quarterly ROE ≈ -4.9%.

  • Valuation is high.PE is in the 98th market percentile; within its own history, PE is around the 98th percentile.

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

Chip flow

Bullish +0.45
BearishNeutralBullish

Single-sided accumulation, concentration rising — bullish

  • Single-sided accumulation, concentration rising — bullish
  • 凱基-信義 holds 3,313 lots
  • sellers have 3,969 lots left, ~1500 sessions to clear

Window from 2026-01-17 · Price +197% · branches to 2026-06-17· TDCC to 2026-06-12

  • Largest holder 凱基-信義 has accumulated 3,313 lots since the start (sold 0%), still adding.
  • Main distributor 凱基 peaked at 2,191 lots, has sold 69%, 676 left, paused recently.
  • TDCC big holders (absolute) >1000-lot holders +5.56pp, mid holders +10, retail -11.21pp — concentration shifting upward.
  • Foreign hedge-desk net short Net short -137 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-信義玉山-新莊康和-仁愛華南永昌-忠孝華南永昌-古亭中國信託-三重
Distributing
凱基台灣摩根士丹利摩根大通凱基-台北美林港商野村
Desks
own scale
元大-忠孝鼎富國泰證券富邦-新竹元大-天母
Price Accumulating & Distributing share one scale (comparable); Desks is independent. Zero is the baseline
Branch details Unit: lots

Accumulating

  • 凱基-信義 +3,313
    sold 0%· still adding
  • 玉山-新莊 +1,519
    sold 0%
  • 康和-仁愛 +1,153
    sold 2%· still adding
  • 華南永昌-忠孝 +1,044
    sold 0%
  • 華南永昌-古亭 +968
    sold 24%· still adding
  • 中國信託-三重 +920
    sold 0%· still adding

Distributing

  • 凱基 676 left
    sold 69%· paused recently
  • 台灣摩根士丹利 302 left
    sold 86%· ~2 sessions to clear
  • 摩根大通 527 left
    sold 71%· ~6 sessions to clear
  • 凱基-台北 1,182 left
    sold 25%· ~30 sessions to clear
  • 美林 497 left
    sold 62%· ~7 sessions to clear
  • 港商野村 300 left
    sold 61%· paused recently

Desks

  • 元大-忠孝鼎富 -961
    unclassified
  • 國泰證券 -734
    unclassified
  • 富邦-新竹 -669
    unclassified
  • 元大-天母 -610
    unclassified
Still selling 3,969 lots ~1500 sessions to bottom at most
Recent buy/sell force +2,205 absorbed / -4,922 sold sellers slightly ahead
Hedge-desk net short -2 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 41-58.5% -59% 0% -156.1%
20-40 41+1.2% -45.7% 14.6% -17.8%
40-60 124+53.5% +22.2% 54% +48.2%
60-80 161+167.6% +189.5% 94.4% +169.8%
80-100 You are here169+50.8% -2.2% 47.9% +45.4%

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 ≈ 302.0, at the 98.0th 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
(20d)
+72.4%
Win rate 76.2% Excess +72.6%
164d
+33.6%
Win rate 78% Excess +35%
218d
60-day momentum down
-31.6%
Win rate 0% Excess -70.4%
116d
-6.1%
Win rate 18.6% Excess -17.6%
59d
Now
+37.6%
Win rate 100% Excess +35.1%
52d

Currently in “Expensive (own-history top 1/3) × 60-day momentum down”: across 52 historical days, 120-day forward avg gained 37.6%, win rate 100%, beat the market by 35.1%.

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.

24 times historically; 60-day forward avg +13.39%, win rate 54.5%, beating the market by +10.53 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).

55 times historically; 60-day forward avg +10.29%, win rate 57.4%, beating the market by +9.12 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.

55 times historically; 60-day forward avg +11.21%, win rate 66%, beating the market by +6.82 pts on average.

What does 光環 do? Company profile

通信網路業/光通訊與光電半導體元件 上櫃

Overview

光環科技股份有限公司,統一編號16211142,成立於1997年9月1日,總部位於新竹科學園區新竹市展業一路21號,英文名稱 TrueLight Corporation。櫃買中心與公開股市資料顯示其為上櫃公司,股票代號3234,掛牌日為2011年3月24日,屬通信網路業普通股。董事長為陳立惇,總經理為朱美彥,發言人為吳承儒。實收資本額約新台幣1,114,746,920元,已發行普通股111,474,692股。主要股東方面,公司官網2026年3月31日資料揭露:台灣光罩股份有限公司持有13,500,000股、持股比率12.11%,為最大股東;其後包括林玉華1.45%、安大略資本股份有限公司1.35%、洪瑞榮1.16%等。員工規模公開來源不完全一致;Goodinfo揭露2024年非主管職員工人數268人,徵才網站曾揭露較高員工數,故本研究採「約數百人規模」並在 notes 標示不確定性。

Business

光環是光通訊與光電半導體元件廠,核心能力涵蓋光電元件設計、晶粒、測試、TO-CAN封裝、光電轉換組件、COB與部分代工服務。主要產品包括VCSEL、FP/DFB雷射二極體、PIN/APD Photodiode、PINTIA、APD、Laser Diode、光學次組件、OSA、PD/PD array、VCSEL array、OE engine、AOC cable、晶圓與晶粒加工代工等。終端應用包括光纖通訊、4G/5G基地台、AI資料中心高速傳輸、雲端資料中心、3D感測、智慧手機光感測、工業檢測、光動力療法、車用資料傳輸、機器人與工業自動化感測。依公開年報彙整頁揭露之114年度營收分布,應用別約為:雲端資料中心矽光應用代工服務40.2%、光通訊數據傳輸應用34.5%、智慧感測應用18.7%、高功率元件應用3.3%、其他3.3%;產品別約為晶粒及其零組件63%、光電轉換組件28%、其他9%。2025年合併營收約新台幣683,276千元,年增約19.09%,但全年仍虧損,經濟日報報導歸屬母公司業主淨損約1.6億元、EPS約-1.4元。

Outlook 2025–2028

2025至2028年的核心觀察是光環能否由傳統光通訊與感測元件供應商,轉向AI資料中心高速光通訊、矽光子、CPO、CW Laser相關代工與封裝平台。公司官網里程碑顯示,2025年已成功開發660nm VCSEL醫療感測元件、高精度先進封裝與矽光子相關光機電軟韌體整合代工技術、400G QSFP56-DD SR8、800G QSFP-DD SR8/1.6T系列產品、PCIe 5.0可插拔光收發模組、112G高速短距離傳輸VCSEL/PD、980nm 25G車規VCSEL/PD;2026年則揭露已開發1310nm 100G APD核心器件、矽光子耦光COB封裝平台、矽光子固態LiDAR即時展示平台。MoneyDJ報導指出,公司2025年前三季因產品組合優化,毛利率提升至15.2%,優於前一年同期2.8%,代工業務向上,2026年上半年損益改善審慎樂觀;未來營運鎖定光通訊、智慧感測、機器人與代工服務四大面向,且預期2026年代工營收比重將超越2025年。成長動能包括AI伺服器與資料中心升級帶動800G/1.6T光模組、矽光子、CPO、高速VCSEL/PD array需求;車用高速資料傳輸、機器人感測、工業自動化與醫療感測亦可能形成中期新應用。主要風險包括:公司仍處虧損修復期且累積虧損已達實收資本額二分之一;高速光通訊產品需通過客戶驗證並量產才會反映營收;矽光子與CPO技術路線變化快,若良率、成本、交期或客戶設計導入不如預期,營運改善可能延後;資本支出、設備更新與產能擴充會增加現金流壓力;客戶集中、價格競爭、外匯、半導體與光通訊景氣循環亦是挑戰。2027至2028展望屬推估:若AI資料中心持續往高速光互連升級,光環具備晶粒、封裝、COB與代工服務整合能力,可能受惠;但實際成長幅度仍取決於大客戶量產導入與財務體質改善。

Supply Chain

Upstream
  • 聯亞光電工業股份有限公司 3081 同屬光通訊主動元件/磊晶與雷射二極體供應鏈;市場資料常將聯亞定位於光通訊磊晶與雷射上游,與光環之直接採購關係未由公司正式完整揭露,故列為產業上游關係而非確認供應商。
  • 全新光電科技股份有限公司 2455 砷化鎵/磷化銦等化合物半導體磊晶供應鏈業者,屬光通訊雷射與檢光元件可能上游材料環節;未查得光環正式揭露其為直接供應商。
  • 台灣光罩股份有限公司 2338 光環最大股東且經媒體報導為私募可能參與對象;屬策略股東與半導體製程/光罩經驗合作資源,非典型原料供應商。
  • 外延片、晶圓、化合物半導體材料、封裝設備與測試設備供應商 光環產品需使用GaAs/InP等化合物半導體外延材料、晶圓製程、封裝與測試設備;個別供應商名單未於可查公開資料完整揭露。
Downstream
  • 華星光通科技股份有限公司 4979 光通訊模組與資料中心高速光傳輸供應鏈公司,屬光環元件可能下游應用端或同一供應鏈夥伴;直接客戶關係未由光環正式確認。
  • 聯鈞光電股份有限公司 3450 光通訊元件與模組供應鏈公司,屬AI資料中心光通訊下游模組/次系統環節;直接交易關係未公開確認。
  • 波若威科技股份有限公司 3163 光通訊被動元件與高速資料中心供應鏈公司,屬光通訊下游應用與同族群公司;直接客戶關係未公開確認。
  • 光聖科技股份有限公司 6442 光通訊元件與資料中心應用供應鏈公司,屬下游模組/系統應用環節;直接交易關係未公開確認。
  • 眾達科技股份有限公司 4977 光收發模組與資料中心網通供應鏈公司,屬高速光通訊下游模組環節;直接客戶關係未公開確認。
  • AI資料中心、雲端服務商、通訊設備商、手機與工業感測客戶 終端應用包含AI資料中心高速傳輸、雲端、5G基地台、消費性電子、車用、機器人與工業自動化;具體客戶多未公開。

Competitors

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.