United Microelectronics (New) (UMC) closed at $18.04 on October 29, 2026, down 4.1% from the previous close, on volume of 11,547,034 shares (30-day average 11,079,964).
Data as of October 29, 2026.
29-Oct-2026
United Microelectronics Earnings Call Signals AI-Driven Upside
TipRanks (Wed, 28-Oct 8:09 PM ET)
UMC’s Q3 operating income jumps on 92% utilization as 22nm hits 18.3% of wafer sales
Market Chameleon (Wed, 28-Oct 4:02 AM ET)
UMC Reports Third Quarter 2026 Results
Business Wire (Wed, 28-Oct 7:35 AM ET)
Semiconductor stocks in focus after SK Hynix results; Micron, Nvidia top Quant list
Seeking Alpha News (Wed, 28-Oct 7:26 AM ET)
United Microelectronics Ramps Expansion on Strong Q3 2026 Results and New Capex
TipRanks (Wed, 28-Oct 6:38 AM ET)
United Microelectronics Files Reviewed Q3 2026 Consolidated Results with U.S. Regulators
TipRanks (Wed, 28-Oct 6:36 AM ET)
UMC Q3 revenue rises 26% as wafer shipments reach record high
Seeking Alpha News (Wed, 28-Oct 6:11 AM ET)
United Microelectronics Q3 2026 Earnings Preview
Seeking Alpha News (Tue, 27-Oct 12:44 PM ET)
UMC and AP Memory Collaborate to Enable Advanced Power Delivery Solutions for AI and HPC Systems
PRNewswire (Thu, 22-Oct 2:00 AM ET)
UMC Posts 27.22% Year-Over-Year September Sales Growth as 2026 Revenue Momentum Builds
Market Chameleon (Tue, 6-Oct 3:10 AM ET)
Founded in 1980, United Microelectronics is the world's third-largest dedicated chip foundry, with close to 5% market share in 2025 after TSMC and SMIC. UMC's headquarters are in Hsinchu, Taiwan, and it operates 12 fabs in Taiwan, Mainland China, Japan and Singapore, with additional sales offices in Europe, the US, and South Korea. UMC features a diverse customer base that includes Texas Instruments, MediaTek, Intel, Broadcom, Novatek, and Realtek, supplying a wide range of products applied in communications, display, memory, automotive and more. UMC employs about 19,000 people as of February 2025.
United Microelectronics (New) trades on the NYSE stock market under the symbol UMC.
As of October 29, 2026, UMC stock price declined to $18.04 with 11,547,034 million shares trading.
UMC has a beta of 2.01, meaning it tends to be more sensitive to market movements. UMC has a correlation of 0.18 to the broad based SPY ETF.
UMC has a market cap of $45.27 billion. This is considered a Large Cap stock.
Last quarter United Microelectronics (New) reported $2 billion in Revenue and $.21 earnings per share. This fell short of revenue expectation by $-30 million and missed earnings estimates by -$.02.
In the last 3 years, UMC traded as high as $28.96 and as low as $5.61.
The top ETF exchange traded funds that UMC belongs to (by Net Assets): SOXX, VWO, SOXL, SPEM, CHPY.
UMC has outperformed the market in the last year with a return of +141.8%, while the SPY ETF gained +13.1%. However, in the most recent history, UMC shares have underperformed the stock market with its stock returning +3.9% in the last 3 month period and -15.7% for the last 2 week period, while SPY has returned +4.1% and 0.0%, respectively.
UMC support price is $18.18 and resistance is $19.46 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that UMC shares will trade within this expected range on the day.
