Compare · ARM vs UMC
ARM vs UMC
Side-by-side comparison of Arm Holdings plc (ARM) and United Microelectronics Corporation (NEW) (UMC): market cap, price performance, sector, and recent activity on the wire.
Summary
- Both ARM and UMC operate in Semiconductors (Technology), so they compete in similar markets.
- ARM is the larger of the two at $294.75B, about 4.7x UMC ($62.74B).
- Over the past year, ARM is up 79.9% and UMC is up 234.7% - UMC leads by 154.8 points.
- UMC has been more active in the news (11 items in the past 4 weeks vs 2 for ARM).
- ARM has more recent analyst coverage (25 ratings vs 24 for UMC).
- Company
- Arm Holdings plc
- United Microelectronics Corporation (NEW)
- Price
- $276.94-1.45%
- $24.90+4.36%
- Market cap
- $294.75B
- $62.74B
- 1M return
- -27.16%
- +15.25%
- 1Y return
- +79.91%
- +234.68%
- Industry
- Semiconductors
- Semiconductors
- Exchange
- NASDAQ
- NYSE
- IPO
- 2023
- News (4w)
- 2
- 11
- Recent ratings
- 25
- 24
United Microelectronics Corporation (NEW)
United Microelectronics Corporation operates as a semiconductor wafer foundry in Taiwan, Singapore, China, Hong Kong, Japan, the United States, Europe, and internationally. It operates through Wafer Fabrication and New Business segments. The company provides circuit design, mask tooling, wafer fabrication, and assembly and testing services. It serves fabless design companies and integrated device manufacturers. United Microelectronics Corporation was incorporated in 1980 and is headquartered in Hsinchu City, Taiwan.
Latest ARM
- Arm Holdings plc downgraded by HSBC Securities with a new price target
- Arm Announces Earnings Release Date for First Quarter Fiscal Year Ended 2027
- Arm Holdings plc downgraded by New Street
- Chief Accounting Officer Bartels Laura Kathleen sold $4,439,866 worth of Ordinary Shares (11,306 units at $392.70), decreasing direct ownership by 48% to 12,135 units (SEC Form 4)
- Chief Commercial Officer Abbey William sold $2,644,252 worth of Ordinary Shares (6,566 units at $402.72), decreasing direct ownership by 24% to 20,563 units (SEC Form 4)
- Chief Commercial Officer Abbey William sold $1,444,002 worth of Ordinary Shares (4,200 units at $343.81), decreasing direct ownership by 13% to 27,129 units (SEC Form 4)
- Chief Commercial Officer Abbey William sold $703,386 worth of Ordinary Shares (2,300 units at $305.82), decreasing direct ownership by 7% to 31,329 units (SEC Form 4)
- SEC Form SD filed by Arm Holdings plc
- SEC Form IRANNOTICE filed by Arm Holdings plc
- SEC Form 20-F filed by Arm Holdings plc
Latest UMC
- Macquarie resumed coverage on United Micro
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- SILITH and UMC Achieve Mass Production Milestone for Silicon Photonics
- CFO & SVP Liu Chitung sold $294,291,000 worth of shares (1,900,000 units at $154.89), decreasing direct ownership by 36% to 3,322,917 units (SEC Form 4)
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- UMC Reports Sales for June 2026
- Vice President Hu Che-Jen sold $1,713,000 worth of shares (10,000 units at $171.30), decreasing direct ownership by 0.31% to 3,214,080 units (SEC Form 4)
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)