Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate United Microelectronics Corporation before investing.

In this article, we go over a few key elements for understanding United Microelectronics Corporation’s stock price such as:

• United Microelectronics Corporation’s current stock price and volume
• Why United Microelectronics Corporation’s stock price changed recently
• Upgrades and downgrades for UMC from analysts
• UMC’s stock price momentum as measured by its relative strength

About United Microelectronics Corporation (UMC)

Before we jump into United Microelectronics Corporation’s stock price, history, target price and what caused it to recently rise, let’s take a look at some background.

United Microelectronics Corporation operates as a semiconductor wafer foundry in Taiwan, China, Hong Kong, Japan, Korea, the United States, Europe, and internationally. It manufactures and sells integrated circuits. The company offers circuit design; mask tooling; wafer fabrication; and assembly and testing services for communication devices, consumer electronics, computer, and other applications. It also provides venture capital and marketing support; consulting and planning; energy technical; solar engineering integrated design; research and development services; and insurance services. United Microelectronics Corporation was incorporated in 1980 and is headquartered in Hsinchu City, Taiwan.

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United Microelectronics Corporation’s Stock Price as of Market Close

As of May 27, 2026, 4:00 PM, CST, United Microelectronics Corporation’s stock price was $22.220.

United Microelectronics Corporation is up 5.41% from its previous closing price of $21.080.

During the last market session, United Microelectronics Corporation’s stock traded between $21.680 and $23.690. Currently, there are approximately 390.59 million shares outstanding for United Microelectronics Corporation.

United Microelectronics Corporation’s price-earnings (P/E) ratio is currently at 179.2, which is high compared to the Semiconductors & Semiconductor Equipment industry median of 68.8. The price-earnings ratio gauges market expectation of future performance by relating a stock’s current share price to its earnings per share.

United Microelectronics Corporation Stock Price History

United Microelectronics Corporation’s (UMC) price is currently up 70.14% so far this month.

During the month of May, United Microelectronics Corporation’s stock price has reached a high of $23.690 and a low of $12.885.

Over the last year, United Microelectronics Corporation has hit prices as high as $23.690 and as low as $6.560. Year to date, United Microelectronics Corporation’s stock is up 182.7%.

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What Caused United Microelectronics Corporation Stock’s Price to Rise?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of May 27, 2026, there was 1 analyst who downgraded United Microelectronics Corporation’s stock and 0 analysts who upgraded over the last month.

Additionally, you'll want to evaluate United Microelectronics Corporation’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on United Microelectronics Corporation’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

United Microelectronics Corporation’s current valuation based on AAII’s Value Grade is a D, which means it is considered to be Expensive.

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Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about United Microelectronics Corporation (UMC) by visiting AAII Stock Evaluator.

Relative Price Strength of United Microelectronics Corporation

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of May 27, 2026, United Microelectronics Corporation has a weighted four-quarter relative price strength of 43.35%, which translates to a Momentum Score of 96 and is considered to be Very Strong.

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United Microelectronics Corporation Stock Price: Bottom Line

As of May 27, 2026, United Microelectronics Corporation’s stock price is $22.220, which is up 5.41% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like United Microelectronics Corporation stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

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