United Microelectronics share price today

United Microelectronics Corporation's share price was $16.07 at the close on 4 November 2026. It has been moving sideways for 2 weeks. That is 6.3% below its average price over the last 200 trading days. In the last 52 weeks it traded between $7 and $26, and at that close it sat 47% of the way up from that low.

A share price tends to move through four phases: moving sideways (stage 1), rising (stage 2), stalling near a high (stage 3) and falling (stage 4). Today United Microelectronics Corporation is in stage 1. The phase helps read everything below.

Over the past 13 weeks it has done worse than the S&P 500, and it has been behind for 5 weeks running.

Over the last 10 years the share price moved +700% while the S&P 500 moved +261%, so it is ahead of the index over that whole period. It was last ahead over 13 weeks in the week of 2 October 2026. The chart above shows the 13-week comparison for every week.

This page treats a rise as over when the price closes below its 200-day average on two Fridays in a row.

United Microelectronics Corporation declared TWD 2.60 per local share for Dec 2025. It reports in Taiwan dollars, and one US-listed share can stand for several local shares, so we do not set this against the dollar price or show a yield.

United Microelectronics is on one of our US lists: US tech stocks.

United Microelectronics Corporation earned TWD 42.3 B of net profit in the Jun 2026 quarter, +374.7% on the same quarter a year earlier. That is the 4th quarter in a row of profit growth. Full-year FY25 profit was TWD 41.7 B. Over 4 years profit has grown −5.0% a year on average. That is 61.5% of the quarter's revenue.

Net profit is what is left after every cost, interest and tax. Earnings per share, dividends and book value all grow from it.

The same quarter a year earlier earned TWD 8.9 B.

For the full year, FY25 profit was TWD 41.7 B (−11.6% on the year before).

Why profit moved: revenue changed +17.0% on a year earlier and the margin moved +3.3 percentage points. Most of the change came from keeping more of each sale.

On average over the last four quarters, profit changed +126.1% and revenue +5.7%. Profit is growing faster than sales: fixed costs are spread over more sales, so each extra dollar of revenue adds more to profit.

This company reports in Taiwan dollars, not US dollars, so the money charts are left out here. The figures in the text are in that currency (TWD); nothing is converted.

United Microelectronics Corporation reported TWD 68.7 B of revenue in the Jun 2026 quarter, +17.0% on the same quarter a year earlier. That is the 3rd quarter in a row with growth on the year before. Over 4 years it has grown 2.8% a year on average. The last full year, FY25, came in at TWD 238 B.

Revenue is everything the company billed its customers in the period.

The last four reported quarters add to TWD 251 B.

FY25 revenue was TWD 238 B, +2.3% on the year before.

Recent pace: the last four quarters grew +5.7% on average, against 2.8% a year over the longer run, so this year is growing faster than its own long-run rate.

Is growth speeding up? Revenue over the last 12 months grew +5.6%, against +5.9% a year over the last 8 quarters (stabilising); profit over the last 12 months grew +110.5%, against +25.0% a year (accelerating).

This company reports in Taiwan dollars, not US dollars, so the money charts are left out here. The figures in the text are in that currency (TWD); nothing is converted.

United Microelectronics Corporation's operating margin was 21.7% in the Jun 2026 quarter, 3.3 percentage points higher than the same quarter a year ago. Across 5 years it has been between 18.5% and 37.2%. The latest quarter is within that range.

Operating margin is what is left from every TWD 100 of sales after the costs of running the business, before interest and tax. It shows pricing power and cost control.

Why the margin moved: operating margin changed +3.3 percentage points on the year while gross margin changed +3.8 points. So the gain came mostly from the gross margin, which means input costs and prices charged.

Over the last 3 years, 187% of United Microelectronics Corporation's reported profit came in as cash from its operations, so the profit is backed by cash. In FY25 it brought in TWD 99.9 B of operating cash against TWD 41.7 B of profit. After TWD 47.7 B of spending on assets, TWD 52.1 B was left over as free cash.

The profit and loss account shows what was earned. The cash-flow statement shows the cash that actually came in. Comparing operating cash flow with profit is one of the best checks that a profit is real.

Cash-flow figures here are yearly, because quarterly cash statements are not published, so this section changes once a year.

Why: the cash figure is clear, but the day counts behind it are not in our data, so we show it without guessing the reason.

What to look at next: the main use of cash is spending on assets. The next section checks what that spending is building.

This company reports in Taiwan dollars, not US dollars, so the money charts are left out here. The figures in the text are in that currency (TWD); nothing is converted.

United Microelectronics Corporation does not report the customer, stock and supplier day counts a cash cycle needs, so this section looks at its spending on assets instead. It spent TWD 228 B on assets over the last 3 years. Averaged over those years that is 32.0% of FY25 revenue a year.

Working capital is the cash tied up between paying suppliers and getting paid. Debtor days: how long customers take to pay. Inventory days: how long stock sits. The cash cycle: the whole loop, in days of sales.

Nothing is estimated in place of the missing day counts, so no cash-cycle chart is drawn.

Spending on assets: TWD 228 B over the last 3 years.

In short: the cash is going into new capacity, not getting stuck in the daily cycle. The question is whether the new capacity earns.

This company reports in Taiwan dollars, not US dollars, so the money charts are left out here. The figures in the text are in that currency (TWD); nothing is converted.

United Microelectronics Corporation's P/E is 15.7×, with too little history to compare. This compares the share price with the company’s own past. It does not say what the business is worth.

P/E is the share price divided by a year's profit per share: how many dollars the market pays for each dollar of yearly profit.

In short: there is too little history to say whether the multiple is high or low for this company, so the earnings trend underneath matters more than the multiple.

United Microelectronics Corporation's business trend cannot be read yet. There are fewer than eight usable quarters of growth figures, so there is not enough history to read the trend. This is based on 12 quarters of 3 measures, with some gaps.

Every business is somewhere on a path of getting better or worse, and this section names where. The last 12 quarters of growth in revenue, profit and earnings per share, plus the return the business earns on its capital, are read as lines. Getting worse: the lines are falling. Turning around: a low point has just formed and the last few quarters are rising from it. Getting better: the rise from the low has lasted. Growing steadily: steady growth with healthy returns. Slowing from a peak: still high, but slowing. When the lines disagree the result is mixed; too little history means no reading. CAGR (compound annual growth rate) is the steady yearly rate that would turn the starting value into the latest one. It is the fairest way to compare growth over different periods. If the 1-year figure is much bigger than the 10-year one, recent growth is running faster than the long-run trend. A dash means there is no figure for that period, or the starting year was a loss, where a growth rate means nothing.

Why it matters: with too little history, we say so rather than guess a direction.

The latest quarter’s profit includes a one-off item bigger than the normal business, so the profit line is shown but does not count in this reading.

There are fewer than eight usable quarters, so this page does not guess a direction from so little history.

Compound annual growth rate (%)

Compound annual growth rate over each period, %. Revenue, profit and EPS come from yearly figures; the stock price row is price growth over the same periods. A dash means no figure for that period, or the starting year was a loss.

United Microelectronics Corporation earned a ROE of 11% in FY25. Its return on capital used (ROIC) is 0.2 percentage points above its cost of capital, so growth here adds value, not just size. It comes from a 17.6% net margin and 0.41× asset turnover (sales divided by assets).

Return on equity (ROE) is the profit the business earns on its shareholders’ money. We do not have the full capital split, so ROE is the longest history we can draw here.

Why the return is what it is (FY25): a 17.6% net margin × 0.41× asset turnover × 1.52× leverage (assets divided by equity) ≈ 11.0% on equity. The margin does most of the work; borrowing plays a small part, so this return is earned, not borrowed.

The key test, return on capital used minus the cost of capital: 13.1% − 12.9% = +0.2 percentage points. The 12.9% is an estimate of this company's own cost of capital. Read the sign and size of the gap, not the decimals. Positive but thin: it creates value with little room for error.

The 13.1% ROIC above is the latest reading, as reported. The yearly chart below shows FY25 at 10.9%, and the quarterly chart works out each 12-month window from the quarterly figures, so the readings differ by date, not by method.

United Microelectronics Corporation has total debt of TWD 63.4 B against shareholder equity of TWD 444 B as of Jun 2026, so its debt is 0.14× its equity, which is very little. Year by year, that ratio went from 0.32 in FY21 to 0.21 in FY25. So the returns on this page come from the business, not from borrowed money.

Debt-to-equity shows how much of the business is paid for with borrowed money. Lower is safer, and the direction matters as much as the level.

This company reports in Taiwan dollars, not US dollars, so the money charts are left out here. The figures in the text are in that currency (TWD); nothing is converted.

We have no ownership or short-position figures for United Microelectronics Corporation, so this section says so rather than fill the gap. At normal trading volumes, closing those positions would take about 2.6 days. US companies do not publish a quarter-by-quarter list of owners, so this page uses short interest instead.

There is no quarter-by-quarter list of owners here, so we look at short interest: the share of tradable shares held in short positions, which gain if the price falls.

For United Microelectronics Corporation, the Z-score is 4.82. A Z-score above about 3 is safe and below about 1.8 signals danger, so this is well clear of danger. It estimates how far the balance sheet is from trouble; it is not a forecast of failure.

The Z-score estimates how far a company is from balance-sheet trouble. Above about 3 is safe; below about 1.8 is the danger zone. It was built for manufacturers, so it is not used for banks and lenders.

Why it matters: a Z-score of 4.82 is well clear of the danger zone, so the balance sheet is not the risk here.

There is no score against its industry: United Microelectronics Corporation is not among the largest members shown in this industry comparison for Semiconductors.

The score ranks a company within its industry: each measure is scored against the other members. Without that group there is no score, so none is shown.

No sector comparison is shown here, not among the largest members shown in this industry comparison.

United Microelectronics is the 17th largest of 59 Semiconductors companies on Sector Alpha by market value (scores of 4 November 2026). Just above it: Monolithic Power Systems, Inc., STMicroelectronics N.V. and Microchip Technology Incorporated. Just below it: Astera Labs, Inc., ON Semiconductor Corporation and Credo Technology Group Holding.

Semiconductors companies close in size

14. Monolithic Power Systems, Inc. $61.6 billion
15. STMicroelectronics N.V. $41 billion
16. Microchip Technology Incorporated $40.9 billion
17. United Microelectronics Corporation $39.4 billion
18. Astera Labs, Inc. $39.1 billion
19. ON Semiconductor Corporation $27.7 billion
20. Credo Technology Group Holding Ltd $25.6 billion

All 59 Semiconductors companies, largest first

Companies close in size in other industries

381. KB Financial Group Inc. $39.6 billion · Banks - Regional
382. Martin Marietta Materials, Inc. $39.5 billion · Building Materials
383. United Microelectronics Corporation $39.4 billion
384. Crown Castle Inc. $39.3 billion · REIT - Specialty
385. Teradyne, Inc. $39.2 billion · Semiconductor Equipment & Materials

Sector Alpha, written by code from the published numbers. Data as of 4 November 2026.

Every chart on this page is drawn by code from the published figures, with no forecasts and no price opinions.

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