UMCUnited Microelectronics Corporation
What is the market doing?
No clear lean: rangebound and insiders net selling (often routine).
Choppy, but holding above its 200-day average. Oversold (RSI 14). Price is +14% vs its 200-day average.
Insiders were net sellers over the 90 days ending Oct 22, 2026; selling is often routine (taxes, diversification).
Lightly shorted, settled Sep 30, 2026, a few days of normal trading to cover. Down 28% 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 +154% over the past year while the S&P 500 is +16%: 138 points ahead of the market.
1-year return · S&P 500 +16%
- vs 200-day average
- +14%
vs 200-day average · a clear uptrend
- RSI (14)
- 14
RSI (14) · oversold, sold harder than it has been bought
- Below its 52-week high
- 33%
Below its 52-week high
Details›
- Last close2026-10-23
- $18.88
- 1 monthS&P 500 −0.94%
- −22%
- 1 yearS&P 500 +16%
- +154%
- 5 yearsS&P 500 +86%
- +129%
- vs 50-day average$21.66
- −13%
- 52-week high
- $28.01
- 52-week low
- $7.02
- Annualised volatility
- 51%
- Insider selling, net, 6 monthsForms 3/4/5 to 2026-10-22
- $526M
| Year | Return |
|---|---|
| 2026 (year to date) | +140% |
| 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 | +5.4% |
| Jul | 11 | 6 of 11 | +1.3% |
| Aug | 11 | 4 of 11 | +1.5% |
| Sep | 11 | 4 of 11 | +4.0% |
| Oct | 11 | 7 of 11 | −4.0% |
| 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.
Where the price stands
Its trend against the 50-day and 200-day averages, and the levels it keeps coming back to.
What it has returned
With dividends, year by year, month by month, and by calendar month on average.
Semiconductors
The closest names by size in the same industry