UMCUnited Microelectronics Corporation
What is the market doing?
No clear lean: nothing decisive, though in an uptrend.
In an uptrend, above its rising 50- and 200-day averages. Price is +51% vs its 200-day average.
Insiders were net sellers over the 90 days ending Oct 8, 2026; selling is often routine (taxes, diversification).
Lightly shorted, settled Sep 15, 2026, about a week of normal trading to cover. Up 14% since the previous count, up from 1.0% of shares outstanding three months ago.
Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.
How UMC is trading
United Microelectronics Corporation is +222% over the past year while the S&P 500 is +18%: 203 points ahead of the market.
1-year return · S&P 500 +18%
- vs 200-day average
- +51%
vs 200-day average · a clear uptrend
- RSI (14)
- 37
RSI (14) · neutral
- Below its 52-week high
- 18%
Below its 52-week high
Details›
- Last close2026-10-09
- $22.96
- 1 monthS&P 500 +2.7%
- +3.9%
- 1 yearS&P 500 +18%
- +222%
- 5 yearsS&P 500 +88%
- +148%
- vs 50-day average$21.38
- +7.4%
- 52-week high
- $28.01
- 52-week low
- $7.02
- Annualised volatility
- 50%
- Insider buying, net, 6 monthsForms 3/4/5 to 2026-10-08
- −$526M
| Year | Return |
|---|---|
| 2026 (year to date) | +192% |
| 2025 | +29% |
| 2024 | −19% |
| 2023 | +39% |
| 2022 | −40% |
| 2021 | +43% |
| 2020 | +231% |
| 2019 | +56% |
| 2018 | −22% |
| 2017 | +42% |
| Month | Years | Positive | Average |
|---|---|---|---|
| Jan | 10 | 6 of 10 | +2.7% |
| Feb | 10 | 5 of 10 | +2.8% |
| Mar | 10 | 5 of 10 | −0.76% |
| Apr | 10 | 6 of 10 | +6.1% |
| May | 10 | 8 of 10 | +9.9% |
| Jun | 10 | 9 of 10 | +5.7% |
| Jul | 11 | 6 of 11 | +1.2% |
| Aug | 11 | 4 of 11 | +1.5% |
| Sep | 11 | 4 of 11 | +4.0% |
| Oct | 11 | 7 of 11 | −2.5% |
| Nov | 10 | 5 of 10 | +7.8% |
| Dec | 10 | 5 of 10 | +1.4% |
End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.
Semiconductors
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