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United Microelectronics Corp (UMC) stock

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NYSE: UMC NYSE Semiconductors Next results ~January 27, 2027

B Fundamentals grade

United Microelectronics Corp is a US-listed company in the semiconductors industry. Its financial year ends in December.

Stock price today

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Third-party market data · may be delayed

Fair value per share

Under review: our cash-flow value ($3.64) is 0.22x the share price ($16.59) and 0.48x the median of our other models ($7.55); the other models don't support a gap this wide.

Price vs value

Under review: our cash-flow value ($3.64) is 0.22x the share price ($16.59) and 0.48x the median of our other models ($7.55); the other models don't support a gap this wide. We'll show the comparison once resolved.

United Microelectronics Corp valuation: adjust assumptions and compare models →

Who’s trading

What company insiders, investment funds and members of Congress have been doing with the stock, from their own filings.

  • Insiders0 buying, 3 selling0 purchases and 5 sales by directors and officers, last 12 monthsInsider trades
  • Funds212 adding, 147 cuttingOf 38 active managers that changed their stake, 14 added; quarter to June 30, 2026Fund buyers and sellers

Value diary

Our note on each quarter United Microelectronics files

Where United Microelectronics stands after its latest Filing

Revenue for the twelve months was $7.64bn, up 5.5% on a year earlier, faster than the 1.3% growth a quarter earlier. Free-cash-flow margin rose to 20.7% from 19.0% a year earlier. Operating margin narrowed to 18.5% from 24.3%. Against its peers on growth, profitability, cash generation and balance sheet, it grades B. It passes 6 of our 7 financial-health checks.

Our model value for United Microelectronics is under review, so past values are not shown until it is resolved.

Written from the company's filings and our models when each quarter's report arrives. Figures in older notes are as published at the time. Not investment advice.

The Fundamentalytics view

Next results ~January 27, 2027 (estimated)

United Microelectronics Corp's trailing-twelve-month revenue grew 5.5% year on year, with a free-cash-flow margin of 20.7%. Where it stands out: stock pay as % of revenue of 0.2% ranks 5 of 74 semiconductor companies we cover.

Our discounted-cash-flow model values the business at ~$3.6 per share in the base case (~$2.8–$4.7 across growth scenarios) — model values under stated assumptions, not a price target.

Current signal Free cash flow diverging from earnings: TTM free cash flow grew 1904.3% while net income fell 14.6%: a 1919pp divergence.

Assembled from SEC-filed figures — the full workings are on this page and in our methodology. Observations, not recommendations.

Highlights

How we pick these

Strengths

  • Growth speeding up. The growth rate is 4.2 points higher than a quarter earlier.
  • Strong cash generation. 20.7% of revenue turned into free cash flow, against a median of 9.6% for semiconductor companies we cover.
  • Net cash. Cash exceeds long-term debt by $2.4bn.

Things to watch

  • Margins narrowing. Operating margin is down 3.7 points on a year ago.
  • Insiders selling. 3 insiders sold $526M of stock over the past 365 days and none bought (0% under pre-set trading plans).
  • Gross margin slipping. Gross margin is down 3.6 points on a year ago.

Latest results

Earnings per share
$0.52 against an average estimate of $0.16: beat by 228.5%
Next report
January 27, 2027

United Microelectronics' figures from its SEC filings and results release; estimates are the analysts' average. Not a recommendation.

Price chart

  • 1 day-1.7%
  • 1 week-14.5%

Closing prices to 2026-11-02. Price change only, dividends excluded.

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Third-party market data · may be delayed

At a glance

Trailing twelve months, from SEC filings

Profitability

Revenue (TTM)
$7.6B
Operating margin
18.5%
Net margin
17.0%
EPS (TTM, diluted)
$0.53

Growth

Revenue growth
+5.5%
Change in growth rate
+4.2 pts
Share count change
−0.2%

Cash

Free cash flow (TTM)
$1.6B
FCF margin
20.7%
Stock pay % of revenue
0.2%

News & updates

Updated November 2, 2026

Company announcements, filed results and changes that matter to shareholders.

  1. Insider trade
  2. Insider trade
  3. Insider trade
  4. Insider trade

Refreshed hourly when new source data is available. Summaries are checked against company releases and SEC filings. Company announcement headlines are labelled when a checked summary is unavailable.

Valuation

United Microelectronics Corp valuation models and calculator

Fundamentalytics rating

model v1.6 · 2026-11-03

Not rated: held for review: our cash-flow value ($3.64) is 0.22x the share price ($16.59) and 0.48x the median of our other models ($7.55); the other models don't support a gap this wide.

Our value per share comes from a discounted-cash-flow model of United Microelectronics Corp's free cash flow after stock-based pay ( $478M, FY2025 Q4 TTM, with after-tax interest added back): growth for five years as below (the first two years from forecasts, guidance and the company's record), fading to 2.5%, discounted at 8.5%, then cash added and debt and other claims subtracted. These are model values under stated assumptions, not price targets or recommendations.

The inputs used by the models below have passed source checks. Individual model values are available below and in the interactive valuator. Their differences are shown explicitly; the platform combined value and recommendation remain withheld.

Valuation models

We value United Microelectronics Corp as an operating company, with every model that fits that kind of business. Cost of equity 12.7%: the 10-year Treasury yield (4.9%) plus a beta of 1.72 times a 4.5% equity risk premium.

Value per share by model
Model Value per share In the combined value?
Cash-flow model (DCF) Free cash flow to the firm (after stock pay, with after-tax interest added back), grown then faded to 2.5%, discounted at 8.5% as the firm rate, less debt and other claims. ~$3.6 ~$2.8–$4.7 Primary model, counts double
Price-to-earnings vs peers Earnings per share times peers' typical (harmonic-mean) price-to-earnings. ~$4.2 ~$9.2–$22 Included
Residual income Book value plus the present value of returns above the cost of equity, fading over ten years. ~$7.6 ~$6.0–$9.6 Included
Justified price-to-book Book value times (return on equity - growth) / (cost of equity - growth): steady-state returns. ~$7.7 ~$7.0–$8.5 Included
Combined value Individual source-checked model scenarios are available. The platform combined value and recommendation remain withheld. — Combined value withheld. Review the individual models and their assumptions.

Different models fail in different ways, so where several apply we average them rather than trust one. Peer-based models compare United Microelectronics Corp with Semiconductors in our coverage, using third-party market data. Model values are estimates under stated assumptions, updated as new filings arrive; not price targets or investment advice. How each model works.

Moat

Not assessed: fewer than five years of comparable figures in the filings. AI disruption exposure for this industry: Low.

A rules-based reading of reported figures, not a forecast and not investment advice. How the score is built: methodology.

Forecasts and guidance

Next results: January 27, 2027, before the open.

Analysts' consensus

No analyst estimates are published for United Microelectronics Corp: too few analysts cover it.

Earnings against estimates

Quarter toEstimateActualSurprise
Jun 2026 $0.16 $0.52 +228.5%
Mar 2026 $0.13 $0.20 +56.4%
Dec 2025 $0.13 $0.13 −1.4%

Adjusted EPS as companies report it, against the average analyst estimate.

Analyst recommendations

4 analysts, Nov 2026
Buy125%
Hold00%
Sell375%

Monthly trend

  1. Nov 2026134
  2. Oct 2026134

Counts of recommendations published by analysts covering United Microelectronics Corp, by month. Source: Aggregated broker recommendations (third-party data). Aggregated counts only: we do not reproduce any firm's recommendation or price target, and these are not Fundamentalytics ratings.

Positioning

Short interest
1.3%
of tradable shares
Days to cover
2.57
at average volume
Short interest, 1 month
−21%
to October 15, 2026
Held by institutions
7%
of shares
Held by insiders
0.0%
of shares
Employees
20,000
full time

Consensus figures average analysts' published estimates (third-party data); guidance is the company's own. Neither is our forecast. Short interest is reported twice a month and lags. Market data may be delayed.

This section is general information, not investment advice or a personal recommendation, and it does not take account of your objectives or circumstances. Forecasts and guidance are estimates, not promises: companies miss their own guidance and analysts' figures are often revised. Prices can fall as well as rise, and you can lose money. See our disclaimer.

Share-price performance

Market data may be delayed

Recent prices are available. Older price history and the statistics that need it are being loaded in the background.

Price behaviour

52-week range
Not enough history
From 52-week high
—
vs 50-day average
—
vs 200-day average
—
Volatility (1 year)
—
Beta vs S&P 500
—

Volatility is the annualised standard deviation of daily returns. Beta 1.5 means the shares typically moved 1.5% for each 1% move in the S&P 500 over the past year. Prices to November 2, 2026.

United Microelectronics Corp in five measures

Fundamentals grade B
Growth Profitability Cash Balance sheet

Growth, profitability, cash generation and balance sheet are percentiles against the companies we cover in the same industry, from SEC filings (100 = best). Value compares the share price with our modelled value range (50 = at our base value; higher = cheaper). A description of reported data and our model — not a quality score or advice.

Fundamentals

Revenue (TTM) United Microelectronics Corp
$4B $6B $8B $10B FY15 Q4 FY17 Q4 FY19 Q4 FY21 Q4 FY23 Q4 FY25 Q4 Revenue (TTM), FY15 Q4: $4.6B Revenue (TTM), FY16 Q4: $4.6B Revenue (TTM), FY17 Q4: $4.9B Revenue (TTM), FY18 Q4: $5B Revenue (TTM), FY19 Q4: $4.8B Revenue (TTM), FY20 Q4: $6B Revenue (TTM), FY21 Q4: $7.6B Revenue (TTM), FY22 Q4: $9.4B Revenue (TTM), FY23 Q4: $7.1B Revenue (TTM), FY24 Q4: $7.2B Revenue (TTM), FY25 Q4: $7.6B $7.6B

Source: SEC EDGAR filings. Retrieved November 1, 2026.

View chart data
Period Revenue (TTM)
FY15 Q4 $4.6B
FY16 Q4 $4.6B
FY17 Q4 $4.9B
FY18 Q4 $5B
FY19 Q4 $4.8B
FY20 Q4 $6B
FY21 Q4 $7.6B
FY22 Q4 $9.4B
FY23 Q4 $7.1B
FY24 Q4 $7.2B
FY25 Q4 $7.6B
Revenue growth, TTM YoY United Microelectronics Corp
-40% -20% 0% 20% 40% FY16 Q4 FY18 Q4 FY20 Q4 FY22 Q4 FY25 Q4 Revenue growth, TTM YoY, FY16 Q4: 0.6% Revenue growth, TTM YoY, FY17 Q4: 7.0% Revenue growth, TTM YoY, FY18 Q4: 2.3% Revenue growth, TTM YoY, FY19 Q4: -4.5% Revenue growth, TTM YoY, FY20 Q4: 25.2% Revenue growth, TTM YoY, FY21 Q4: 27.0% Revenue growth, TTM YoY, FY22 Q4: 22.9% Revenue growth, TTM YoY, FY23 Q4: -23.7% Revenue growth, TTM YoY, FY24 Q4: 1.3% Revenue growth, TTM YoY, FY25 Q4: 5.5% 5.5%

Source: SEC EDGAR filings. Retrieved November 1, 2026.

View chart data
Period Revenue growth, TTM YoY
FY16 Q4 0.6%
FY17 Q4 7.0%
FY18 Q4 2.3%
FY19 Q4 -4.5%
FY20 Q4 25.2%
FY21 Q4 27.0%
FY22 Q4 22.9%
FY23 Q4 -23.7%
FY24 Q4 1.3%
FY25 Q4 5.5%
Operating margin (TTM) United Microelectronics Corp
0% 10% 20% 30% 40% FY15 Q4 FY17 Q4 FY19 Q4 FY21 Q4 FY23 Q4 FY25 Q4 Operating margin (TTM), FY15 Q4: 7.5% Operating margin (TTM), FY16 Q4: 4.2% Operating margin (TTM), FY17 Q4: 4.4% Operating margin (TTM), FY18 Q4: 3.8% Operating margin (TTM), FY19 Q4: 3.3% Operating margin (TTM), FY20 Q4: 12.4% Operating margin (TTM), FY21 Q4: 24.3% Operating margin (TTM), FY22 Q4: 37.4% Operating margin (TTM), FY23 Q4: 26.0% Operating margin (TTM), FY24 Q4: 22.2% Operating margin (TTM), FY25 Q4: 18.5% 18.5%

Source: SEC EDGAR filings. Retrieved November 1, 2026.

View chart data
Period Operating margin (TTM)
FY15 Q4 7.5%
FY16 Q4 4.2%
FY17 Q4 4.4%
FY18 Q4 3.8%
FY19 Q4 3.3%
FY20 Q4 12.4%
FY21 Q4 24.3%
FY22 Q4 37.4%
FY23 Q4 26.0%
FY24 Q4 22.2%
FY25 Q4 18.5%
FCF margin (TTM) United Microelectronics Corp
-40% -20% 0% 20% 40% FY15 Q4 FY17 Q4 FY19 Q4 FY21 Q4 FY23 Q4 FY25 Q4 FCF margin (TTM), FY15 Q4: -1.2% FCF margin (TTM), FY16 Q4: -31.6% FCF margin (TTM), FY17 Q4: 4.7% FCF margin (TTM), FY18 Q4: 20.2% FCF margin (TTM), FY19 Q4: 24.3% FCF margin (TTM), FY20 Q4: 21.1% FCF margin (TTM), FY21 Q4: 19.0% FCF margin (TTM), FY22 Q4: 22.6% FCF margin (TTM), FY23 Q4: -3.6% FCF margin (TTM), FY24 Q4: 1.1% FCF margin (TTM), FY25 Q4: 20.7% 20.7%

Source: SEC EDGAR filings. Retrieved November 1, 2026.

View chart data
Period FCF margin (TTM)
FY15 Q4 -1.2%
FY16 Q4 -31.6%
FY17 Q4 4.7%
FY18 Q4 20.2%
FY19 Q4 24.3%
FY20 Q4 21.1%
FY21 Q4 19.0%
FY22 Q4 22.6%
FY23 Q4 -3.6%
FY24 Q4 1.1%
FY25 Q4 20.7%

Data: SEC EDGAR XBRL company facts (as filed in 10-K/10-Q); forms 20-F. Generated November 3, 2026. Definitions in our methodology.

Where the money goes

FY2025, from the 10-K

Each dollar United Microelectronics took in during FY2025, followed through to profit: what it cost to make, what went on research and running the business, and what was left after tax.

  1. Revenue $7.6B
  2. Other income $139M · 1.8%
  3. Cost of revenue $5.4B · 71.0%
  4. Gross profit $2.2B · 29.0%
  5. Research and development $570M · 7.5%
  6. Other operating costs $232M · 3.0%
  7. Operating income $1.4B · 18.5%
  8. Income tax $254M · 3.3%
  9. Net income $1.3B · 17.0%

Shares of revenue. Source: United Microelectronics's 10-K for FY2025, as filed with the SEC. "Other" lines are what the reported lines leave unexplained. Other income is income outside operations, such as investment gains.

Financial statements

US$ millions unless shown otherwise. Fiscal years, plus the last twelve months (LTM) when newer.

Fiscal year 2015 Dec 2015 2016 Dec 2016 2017 Dec 2017 2018 Dec 2018 2019 Dec 2019 2020 Dec 2020 2021 Dec 2021 2022 Dec 2022 2023 Dec 2023 2024 Dec 2024 2025 Dec 2025
Income
Revenue 4,565 4,590 4,912 5,023 4,796 6,006 7,625 9,372 7,147 7,237 7,635
Gross profit 1,001 943 890 758 690 1,325 2,579 4,229 2,497 2,357 2,215
EBITDA 1,773 1,803 1,958 1,911 1,748 2,397 3,526 4,984 3,153 3,104 3,313
Operating income 342 192 216 189 158 745 1,850 3,507 1,859 1,608 1,413
Net income 418 268 318 255 264 776 1,834 3,009 1,917 1,520 1,297
Diluted EPS $0.16 $0.10 $0.12 $0.10 $0.11 $0.32 $0.75 $1.20 $0.77 $0.61 $0.53
Growth (year on year)
Revenue — +0.6% +7.0% +2.3% −4.5% +25.2% +27.0% +22.9% −23.7% +1.3% +5.5%
EBITDA — +1.7% +8.6% −2.4% −8.5% +37.1% +47.1% +41.3% −36.7% −1.5% +6.7%
Operating income — −43.7% +12.4% −12.7% −16.2% +371.3% +148.4% +89.6% −47.0% −13.5% −12.1%
Net income — −35.9% +19.0% −19.9% +3.5% +194.2% +136.3% +64.0% −36.3% −20.7% −14.6%
Diluted EPS — −35.3% +18.6% −19.3% +5.6% +201.9% +136.2% +60.5% −35.7% −20.7% −14.4%
Margins
Gross margin 21.9% 20.5% 18.1% 15.1% 14.4% 22.1% 33.8% 45.1% 34.9% 32.6% 29.0%
EBITDA margin 38.8% 39.3% 39.9% 38.1% 36.4% 39.9% 46.2% 53.2% 44.1% 42.9% 43.4%
Operating margin 7.5% 4.2% 4.4% 3.8% 3.3% 12.4% 24.3% 37.4% 26.0% 22.2% 18.5%
Net margin 9.2% 5.8% 6.5% 5.1% 5.5% 12.9% 24.1% 32.1% 26.8% 21.0% 17.0%
Free-cash-flow margin −0.5% −30.5% 5.5% 20.7% 25.9% 22.3% 19.9% 23.6% −2.5% 2.3% 21.9%
Cash flow
Cash from operations 1,885 1,442 1,726 1,691 1,777 2,233 3,234 4,905 2,762 2,924 3,210
Capital spending 1,907 2,842 1,455 651 535 895 1,720 2,695 2,938 2,758 1,535
Free cash flow −23 −1,400 271 1,041 1,242 1,338 1,515 2,210 −176 166 1,675
Stock-based pay 0 0 0 23 12 33 62 45 33 25 16
Free cash flow after stock pay −23 −1,400 271 1,018 1,230 1,306 1,452 2,165 −209 141 1,659
Balance sheet
Cash 1,625 1,777 2,756 2,733 3,193 3,349 4,781 5,656 4,329 3,202 3,528
Total debt 0 2,254 3,419 1,947 2,527 2,020 2,876 1,164 2,217 1,511 2,481
Net debt (negative = net cash) −1,625 477 663 −786 −665 −1,329 −1,904 −4,492 −2,112 −1,691 −1,047
Diluted shares 2,634m 2,670m 2,655m 2,654m 2,590m 2,450m 2,449m 2,498m 2,476m 2,473m 2,469m
Returned to shareholders
Dividends 219 214 201 284 224 332 711 — — — —
Buybacks 69 74 0 204 96 57 0 0 — — —
Total returned 288 289 201 488 320 389 711 0 — — —

Source: SEC EDGAR XBRL company facts (US and foreign periodic filings); column headings link to the filing. EBITDA is operating income plus depreciation and amortisation. Free cash flow is cash from operations minus capital spending. Growth is left blank when last year's figure was a loss or under 2% of revenue. Share counts and EPS are restated for stock splits. A dash means the company didn't report the figure.

Financial health

6 of 7 checks passed · December 31, 2025
What it owns · $18.1bn
Short-term assets $6.5bnLonger-term assets $11.6bn
What it owes, and who funded it · $18.1bn
Short-term liabilities $2.9bnLonger-term liabilities $3.6bnShareholders' equity $11.7bn
  • Short-term assets cover short-term liabilities $6.5bn of assets due within a year against $2.9bn of liabilities due within a year.
  • Short-term assets cover long-term liabilities $6.5bn short-term assets against $3.6bn of longer-dated liabilities.
  • More cash than debt $3.5bn of cash against $2.5bn of debt.
  • Debt below 40% of shareholders' equity Debt is 21% of equity.
  • Debt burden no higher than five years ago Debt to equity moved from 7% to 21% over five years.
  • A year's operating cash flow covers at least 20% of debt $3.2bn of operating cash flow against $2.5bn of debt.
  • Operating profit covers interest at least five times over Operating income of $1.4bn against $24m of interest.

From United Microelectronics Corp's latest balance sheet as filed. Checks are fixed, documented rules (methodology), counted only where the company reports the figures — a dot means the filing doesn't break the item out. Descriptions of reported data, not advice.

Dividends, buybacks and capital spending

Diluted share count
−0.2%
year over year
R&D spending
7.5%
of revenue

Competitors: side by side with peers

Closest by revenue in semiconductors
Last 12 months unless stated UMC AMKR GFS JKS ON MRVL Median
Revenue, last 12 months $7.6bn $7.5bn $6.8bn $9.1bn $6.4bn $9.5bn $1.1bn
Revenue growth, last 12 months 5.5% 15.7% 0.6% −28.9% 2.9% 30.6% 13.7%
Revenue growth, 3-year average — 3.9% — 99.3% −8.6% 18.9% 3.9%
Revenue growth, latest quarter — 0.2% — — 11.1% 36.5% 20.1%
Gross margin 29.0% 16.6% 24.9% 2.2% 38.7% 52.2% 48.3%
Operating margin 18.5% 9.5% 11.7% −13.6% 12.3% 16.5% 4.8%
Operating margin, 3-year average 15.7% 7.7% — −3.2% 14.6% 3.2% 4.8%
Net margin 17.0% 8.3% 13.0% −6.8% 10.8% 27.9% 5.3%
Cash from operations / revenue 42.0% 20.3% 25.5% 1.7% 27.8% 23.3% 17.4%
Free-cash-flow margin 20.7% −2.1% 14.9% −3.4% 25.4% 18.2% 9.6%
Free-cash-flow margin, 3-year average 14.8% 2.7% — −10.8% 20.5% 22.0% 8.5%
Stock pay / revenue 0.2% 0.4% 2.9% 0.3% 2.3% 8.9% 5.8%
Change in share count −0.2% 0.7% 0.9% −0.7% −4.5% 2.0% 0.9%

Median of all 75 companies we cover in semiconductors. Shaded: best of the six on that line (lowest for stock pay and share-count growth). 3-year figures average the last three 12-month periods; 3-year growth is compound annual. Source: SEC filings.

Peer comparison

75 semiconductor companies
Measure Company Peer median Rank
Revenue growth Growth 5.5% 13.7% 51 of 75
Change in growth rate Growth +4.2pp +3.7pp 35 of 75
Gross margin Profitability 29.0% 48.3% 57 of 73
Operating margin Profitability 18.5% 4.8% 19 of 75
Net margin Profitability 17.0% 5.3% 20 of 75
Free-cash-flow margin Cash generation 20.7% 9.6% 18 of 75
Stock pay as % of revenue Cash generation 0.2% 6.4% 5 of 74
Long-term debt as % of assets Balance sheet 6.0% 14.0% 13 of 47
Change in share count Balance sheet -0.2% 0.9% 20 of 72

Rank 1 = best in the group (for spending, debt and dilution, lower ranks first).

Who owns it

Funds buying and selling
Reported value
$4.9B
Institutions reporting
360
Shares held vs prior quarter
▲ 3.2%
Positions opened / closed
81 / 36

Top buyers and sellers, Q2 2026: 212 institutions bought and 147 sold ; the biggest buyer was Bank Of America Corp (+7.6M shares) and the biggest seller AQR Capital Management LLC (−7.0M). See which funds bought and sold →

Largest reported holders, June 30, 2026
Manager Value Shares Share of 13F value Shares QoQ
Blackrock, Inc. $858M 31.5M 17.5% ▲ 14.7%
UBS Group AG $317M 11.6M 6.5% ▲ 42.3%
Goldman Sachs Group Inc $302M 11.1M 6.2% ▲ 89.1%
Bank Of America Corp $277M 10.2M 5.7% ▲ 291.1%
Vanguard Capital Management LLC $234M 8.6M 4.8% ▼ 4.3%
Morgan Stanley $225M 8.3M 4.6% ▼ 5.6%
AQR Capital Management LLC $210M 7.7M 4.3% ▼ 47.5%
Rafferty Asset Management, LLC $208M 7.7M 4.3% ▲ 53.6%
Acadian Asset Management LLC $157M 5.8M 3.2% ▼ 29.2%
Man Group PLC $152M 5.6M 3.1% ▼ 2.4%
Citigroup Inc $147M 5.4M 3.0% ▲ 26.0%
Barclays PLC $133M 4.9M 2.7% ▲ 3.2%

From Form 13F filings with the SEC ( quarterly data sets), as reported by each manager for June 30, 2026 and filed up to 45 days later. 13F reports cover long US-listed positions of managers above $100M only, so this is not United Microelectronics Corp's complete shareholder register. Values are as reported by the filers ; 2 inconsistently scaled filing rows were excluded.

Insider trading activity

Full insider history and chart
Insider purchases History → $0 0 trades by 0 insiders, last 12 months Insider sales History → $526M 5 trades by 3 insiders · 0% under pre-set plans
Net ▼ $526M net selling
Insider Date Trade Shares Price Value
Lin Jen-Tsung Vice President September 22, 2026 Sell 10,000 $163.00 $1.6M
Liu Chitung CFO & SVP September 17, 2026 Sell 400,000 $145.00 $58M
Liu Chitung CFO & SVP September 16, 2026 Sell 1,200,000 $142.33 $171M
Liu Chitung CFO & SVP July 13, 2026 Sell 1,900,000 $154.89 $294M
Hu Che-Jen Vice President June 30, 2026 Sell 10,000 $171.30 $1.7M

From insiders' Form 4 filings with the SEC. Excludes awards, option exercises and shares withheld for tax. "Pre-set plan" means the filing marks the trade as made under a Rule 10b5-1 plan. See every insider trade since five years ago, on a price chart.

Earnings dates and SEC filings

Results announcements

Recent SEC filings

  • 6-K 6-K
  • 6-K 6-K
  • 6-K 6-K
  • 6-K 6-K
  • 6-K 6-K
  • 6-K 6-K
  • 6-K 6-K
  • 6-K 6-K

Data status

When each part of this page on United Microelectronics Corp was last updated.

DataLast updatedSource
Share priceExchange closing prices
News and updatesCompany releases and SEC 8-K filings
Analyst estimatesAggregated analyst estimates
Valuation and scoresOur models, from the filed figures

How we build and check these figures: methodology and data sources.

United Microelectronics Corp in brief

What does United Microelectronics Corp do?
United Microelectronics Corp is a US-listed company in the semiconductors industry. Its financial year ends in December.
What is United Microelectronics Corp's stock ticker?
United Microelectronics Corp trades under the ticker UMC on NYSE. This page brings together its financial statements, valuation models, ownership and recent company updates.
What is United Microelectronics Corp's revenue, and how fast is it growing?
Over its most recent trailing twelve months, United Microelectronics Corp reported revenue of $7.6B, 5.5% higher than a year earlier, according to its SEC filings.
What is United Microelectronics Corp's free cash flow?
United Microelectronics Corp's free-cash-flow margin is 20.7% of revenue over the trailing twelve months, ranking 18 of the 75 semiconductor companies we cover.
Who are United Microelectronics Corp's largest institutional shareholders?
By value reported in 13F filings for June 30, 2026, the largest reported holders are Blackrock, Inc., UBS Group AG and Goldman Sachs Group Inc. 13F reports cover long US-listed positions of managers above $100M, filed up to 45 days after quarter end.
How much debt does United Microelectronics Corp have?
United Microelectronics Corp's debt-to-equity ratio is 21.3%, from its latest balance sheet (7.5% five years earlier). The financial health section below sets out its other solvency checks.
Who are United Microelectronics Corp's competitors?
In our Semiconductors peer group, the companies closest to United Microelectronics Corp are Amkor Technology, Inc., Globalfoundries Inc., Jinkosolar Holding Co., Ltd., ON Semiconductor Corp and Marvell Technology. The side-by-side comparison below sets their revenue, margins and growth against United Microelectronics Corp's.
Are insiders buying or selling United Microelectronics Corp stock?
Over the last 12 months, United Microelectronics Corp's directors and officers reported 0 open-market purchases and 5 sales on Form 4. The insider trading page charts every trade.
When is United Microelectronics Corp's next earnings date?
Around January 27, 2027, estimated from the spacing of its past results announcements (8-K filings). That is an estimate, not a confirmed date — United Microelectronics Corp announces its own schedule.