United Microelectronics Corp vs Western Digital Corp — how do they compare? United Microelectronics Corp trades at $23.1 (market cap $58.02B), while Western Digital Corp trades at $388.25 (market cap $147.23B). The key difference: Western Digital Corp is far larger — about 2.5× United Microelectronics Corp's market cap, and United Microelectronics Corp pays the higher dividend (1.76%). Which is the better fit depends on your goals — on Pluang, investors hold United Microelectronics Corp for 42 Days and Western Digital Corp for 37 Days on average.
| UMC | WDC | |
|---|---|---|
Market Cap | $58.02B | $147.23B |
Volume | 11,897,809 | 9,341,468 |
Sector | Technology | Technology |
52-Week High | $28.02 | $746.23 |
52-Week Low | $7.02 | $113.13 |
Typical Hold Time | 42 Days | 37 Days |
Enterprise Value | $55.10B | $146.70B |
Dividend Yield | 1.76% | 0.15% |
Signals from Pluang's Aura AI — not financial advice
UMC trades at $23.31, up 0.52% with a bullish technical signal despite mixed moving averages. The company shows strong profitability with 32.75% net margin and 21.03% ROE, though revenue growth has moderated from 2022 peaks. Recent earnings beats and a Zacks Strong Buy upgrade (September 17, 2026) highlight positive momentum, while cash flow turned positive in 2025 after two years of outflows.
The stock presents growth potential with expanding AI opportunities and strong 22/28nm demand, but faces risks from semiconductor cycle volatility and competitive pressures. Analyst consensus is mixed with 27% buy ratings versus 20% sell, suggesting cautious optimism amid elevated valuation multiples.
Western Digital (WDC) trades at $405.21, down 1.42% amid recent sector volatility. The stock shows strong fundamentals with a P/E of 14.61 and impressive profitability metrics including 71.97% net income margin and 131.02% ROE. Recent earnings have consistently beaten expectations, with Q2 2026 EPS of $3.56 surpassing the $3.31 estimate. Technical indicators show bearish momentum with the price near key support at $400, while RSI at 29.60 suggests potential oversold conditions.
Despite near-term competitive pressures from Toshiba's production expansion, WDC maintains strong analyst support with 72% buy ratings and a $647.58 consensus target. The company's dominant 40%+ market share in HDDs and AI-driven storage demand provide long-term growth catalysts, though investors should monitor pricing pressure risks in the evolving AI storage landscape.
Trailing returns across standard periods
What Pluang investors did over the last 30 days
Latest headlines on both assets
Founded in 1980, United Microelectronics is the world's third-largest dedicated chip foundry, with 7% market share in 2021, according to Gartner, after TSMC and GlobalFoundries. 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 U.S. and South Korea. UMC features a diverse customer base including Texas Instruments, MediaTek, Qualcomm, Broadcom, Xilinx and Realtek, supplying a wide range of products applied in communications, display, memory, automotive and more. UMC employs about 20,000 people.
Read more on UMC →Western Digital is a vertically integrated supplier of data storage solutions, spanning both hard disk drives and solid-state drives. In the HDD market it forms a practical duopoly with Seagate, and it is the largest global producer of NAND flash chips for SSDs in a joint venture with competitor Kioxia.
Read more on WDC →