United Microelectronics Corporation (UMC)
Tech Top 100 · Information Technology · data since 2000-09-19 · last close 2026-09-09
United Microelectronics Corporation (UMC) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 29.5 | 2.5 | -14.0 | 45.4 | 69.8 | 22.7 | -28.8 | 4.5 | 14.1 | · | · | · |
| 2025 | -10.9 | 11.6 | 10.8 | -1.5 | 8.1 | 6.9 | -10.6 | -3.8 | 15.2 | 1.7 | -3.2 | 5.4 |
| 2024 | -8.9 | -0.4 | 5.3 | -4.8 | 10.4 | 3.1 | 0.9 | 4.8 | -4.0 | -18.8 | -1.3 | -3.9 |
| 2023 | 24.5 | 0.0 | 7.8 | -8.3 | 2.9 | 2.6 | -4.8 | -4.5 | -1.5 | 0.8 | 9.4 | 8.6 |
| 2022 | -16.0 | -5.6 | -1.7 | -12.7 | 10.7 | -17.8 | 0.7 | -2.8 | -16.0 | 6.5 | 27.1 | -13.4 |
| 2021 | 7.3 | 8.3 | -7.0 | 8.9 | -5.1 | 0.4 | 14.9 | 8.0 | 0.5 | -10.2 | 13.2 | 0.6 |
| 2020 | -9.7 | 2.5 | -12.5 | 15.2 | 1.2 | 4.3 | 47.3 | -4.3 | 35.3 | 10.7 | 34.5 | 18.2 |
| 2019 | 5.6 | -2.1 | 1.6 | 15.4 | -9.2 | 12.2 | 2.9 | -3.2 | -0.9 | 8.1 | 8.0 | 9.8 |
| 2018 | 2.1 | -1.2 | 7.5 | 3.1 | 4.1 | 1.4 | 3.6 | -0.4 | -7.5 | -27.1 | -3.2 | -1.6 |
| 2017 | 3.4 | 12.7 | -5.4 | 0.5 | 6.2 | 18.4 | -4.0 | 10.6 | 0.0 | 4.0 | -1.9 | -6.3 |
| 2016 | 4.3 | 5.6 | 0.5 | -9.1 | -0.5 | 5.8 | -0.8 | -1.6 | -0.5 | 2.7 | -4.2 | -3.9 |
| 2015 | 4.8 | 5.5 | -2.8 | -0.8 | -7.0 | -8.9 | -8.2 | -9.4 | -0.6 | 14.2 | 0.0 | 1.6 |
| 2014 | -1.0 | -0.5 | 3.5 | 4.8 | 5.5 | 4.8 | -6.0 | 1.4 | -10.4 | 10.1 | -1.4 | 5.1 |
| 2013 | -1.5 | -5.6 | -2.7 | 5.0 | 14.8 | 7.4 | -2.8 | -10.9 | 5.1 | -0.5 | -1.9 | 1.5 |
| 2012 | 26.6 | 0.4 | -9.9 | 9.4 | -21.3 | 2.8 | 4.0 | -6.5 | 1.0 | -8.3 | 1.6 | 4.2 |
| 2011 | 0.6 | -11.9 | -2.5 | 4.0 | -4.2 | -5.9 | -2.8 | -13.5 | -4.0 | 16.8 | 2.7 | -6.5 |
| 2010 | -9.5 | -2.3 | 9.6 | -5.6 | -6.8 | -12.1 | 6.8 | -15.2 | 8.2 | 11.2 | -7.8 | 10.9 |
| 2009 | -7.7 | -2.2 | 42.9 | 20.6 | 4.9 | -17.5 | 28.8 | -4.4 | 16.9 | -13.4 | 3.0 | 14.4 |
| 2008 | -12.1 | 5.3 | 5.6 | 2.4 | 0.3 | -15.8 | -12.0 | -0.4 | -16.3 | 25.6 | -24.9 | 6.5 |
| 2007 | 1.7 | -7.0 | -3.6 | 3.1 | 1.8 | 2.4 | -2.8 | 2.2 | 8.8 | -26.8 | -7.4 | -0.9 |
| 2006 | 5.1 | -4.0 | 8.3 | 10.6 | -11.7 | -6.6 | -1.9 | 2.1 | 1.0 | -1.6 | 16.8 | -1.4 |
| 2005 | 0.0 | 4.8 | -8.9 | -3.6 | 15.1 | 9.9 | -6.3 | -11.1 | 5.6 | -18.9 | 5.8 | 1.0 |
| 2004 | 9.3 | -3.7 | -0.2 | 0.0 | -3.9 | -13.8 | -7.3 | 2.7 | -11.1 | 3.5 | 0.0 | 0.9 |
| 2003 | -8.9 | 5.6 | -6.8 | 7.6 | 21.0 | -4.3 | 15.1 | 19.8 | -9.3 | 16.4 | -0.2 | -5.5 |
| 2002 | -8.1 | -4.2 | 26.0 | -5.2 | -15.8 | -13.5 | -19.2 | -22.6 | -21.0 | 17.6 | 9.4 | -26.0 |
| 2001 | 43.3 | -18.7 | -2.6 | 17.4 | -7.5 | -12.4 | 9.1 | -11.3 | -29.0 | 7.1 | 36.7 | 23.2 |
| 2000 | · | · | · | · | · | · | · | · | -15.2 | -4.2 | -24.7 | -3.6 |
| Avg | 2.8 | -0.2 | 1.9 | 4.7 | 3.2 | -0.9 | 0.6 | -2.7 | -1.3 | 1.0 | 3.3 | 1.5 |
Values in %. Current and first-listed months are partial (greyed).
returnsview.com
UMC seasonality — average by calendar month
United Microelectronics Corporation has monthly history back to 2000. Its strongest month by median is October — positive in 16 of 26 years, median +3.1%, and higher in 6 of the last 9. August is the soft spot, down in 17 of 26 with a median of -3.0%. Across its full record it has closed 50% of months higher, swings ±12.5% in an average month and has fallen 89.1% peak to trough.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | +2.8% | -0.2% | +1.9% | +4.7% | +3.2% | -0.9% | +0.6% | -2.7% | -1.9% | +1.1% | +3.3% | +1.5% |
| Win rate | 54%/26 | 42%/26 | 46%/26 | 62%/26 | 58%/26 | 58%/26 | 42%/26 | 35%/26 | 38%/26 | 62%/26 | 46%/26 | 58%/26 |
Win rate = share of positive months / sample size.
UMC risk & extremes
UMC drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
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Frequently asked questions
What was United Microelectronics Corporation's best month?+
United Microelectronics Corporation's strongest completed month on record is May 2026, at +69.83%.
What was United Microelectronics Corporation's worst month?+
Its weakest completed month on record is September 2001, at -28.97%.
Is United Microelectronics Corporation up this year?+
United Microelectronics Corporation is up 193.76% year to date, measured from its last close before 1 January.
What is United Microelectronics Corporation's 1-year return?+
+236.09% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is United Microelectronics Corporation's biggest drawdown?+
The deepest peak-to-trough fall on record is 89.1%, measured on month-end closes since 2000.
Which calendar month is historically best for United Microelectronics Corporation?+
April has the highest average return across every completed April since 2000. An average is not a forecast.
About United Microelectronics Corporation
United Microelectronics Corporation is an information technology business worth about $57 billion. It sells the picks and shovels of the digital gold rush — with price receipts on this site going back to 2000. And the long game: $100 at its first close here (2000) would be about $388 today.
Did you know?
- Its best month on record was May 2026 at +69.83%; its worst, September 2001 at -28.97%.
Trivia for entertainment — the numbers come from our price data; the jokes don't.