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 $364.90B, about 7.4x UMC ($49.60B).
- Over the past year, ARM is up 147.5% and UMC is up 154.5% - UMC leads by 7.0 points.
- ARM has been more active in the news (28 items in the past 4 weeks vs 8 for UMC).
- ARM has more recent analyst coverage (25 ratings vs 23 for UMC).
- Company
- Arm Holdings plc
- United Microelectronics Corporation (NEW)
- Price
- $343.04-12.79%
- $19.72-5.15%
- Market cap
- $364.90B
- $49.60B
- 1M return
- +44.54%
- +29.57%
- 1Y return
- +147.47%
- +154.45%
- Industry
- Semiconductors
- Semiconductors
- Exchange
- NASDAQ
- NYSE
- IPO
- 2023
- News (4w)
- 28
- 8
- Recent ratings
- 25
- 23
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
- 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
- Chief Commercial Officer Abbey William sold $1,336,125 worth of Ordinary Shares (4,655 units at $287.03), decreasing direct ownership by 12% to 33,629 units (SEC Form 4)
- Chief People Officer Eaton Charlotte Claire sold $2,263,520 worth of Ordinary Shares (7,805 units at $290.01), closing all direct ownership in the company (SEC Form 4)
- Chief Legal Officer Collins Spencer sold $8,802,315 worth of Ordinary Shares (40,941 units at $215.00), closing all direct ownership in the company (SEC Form 4)
Latest UMC
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- UMC Reports Sales for May 2026
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- SEC Form SD filed by United Microelectronics Corporation (NEW)
- United Micro downgraded by BNP Paribas Exane
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- UMC Announces Release of 14nm eHV FinFET Platform, Advancing Innovation in Next-Generation Smartphone Displays