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 $260.47B, about 4.9x UMC ($52.67B).
- Over the past year, ARM is up 32.8% and UMC is up 162.1% - UMC leads by 129.3 points.
- UMC has been more active in the news (6 items in the past 4 weeks vs 4 for ARM).
- Both have 25 recent analyst ratings on file.
- Company
- Arm Holdings plc
- United Microelectronics Corporation (NEW)
- Price
- -
- -
- Market cap
- $260.47B
- $52.67B
- 1M return
- -14.03%
- -19.09%
- 1Y return
- +32.85%
- +162.12%
- Industry
- Semiconductors
- Semiconductors
- Exchange
- NASDAQ
- NYSE
- IPO
- 2023
- News (4w)
- 4
- 6
- Recent ratings
- 25
- 25
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
- A 20% Drop in Smartphone Shipments Shows Who Wins When Memory Gets Expensive
- AI Revenue Questions Pull Semiconductor Stocks Off October Highs
- The Unconventional Route to Fusion Power Just Hit a World First
- Arm Announces Earnings Release Date for Second Quarter Fiscal Year Ending 2027
- Chief Financial Officer Child Jason sold $3,120,000 worth of Ordinary Shares (10,400 units at $300.00) as part of a pre-agreed trading plan, decreasing direct ownership by 6% to 153,442 units (SEC Form 4)
- SEC Form 144 filed by Arm Holdings plc
- SEC Form 6-K filed by Arm Holdings plc
- SEC Form 4 filed by Chief Commercial Officer Abbey William
- Chief Executive Officer Haas Rene A. was granted 64 units of Ordinary Shares, increasing direct ownership by 0.02% to 338,666 units (SEC Form 4)
- SEC Form 6-K filed by Arm Holdings plc
Latest UMC
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- SEC Form 6-K filed by United Microelectronics Corporation (NEW)
- UMC Reports Sales for September 2026
- Amendment: SEC Form 6-K/A 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)
- Vice President Lin Jen-Tsung sold $1,630,000 worth of Commin Shares (10,000 units at $163.00), decreasing direct ownership by 0.85% to 1,172,140 units (SEC Form 4)
- New insider Yen Hung-Yu claimed ownership of 339,682 shares (SEC Form 3)
- CFO & SVP Liu Chitung sold $228,799,600 worth of shares (1,600,000 units at $143.00), decreasing direct ownership by 38% to 2,639,757 units (SEC Form 4)
- CFO & SVP Liu Chitung acquired 1,000,000 shares and disposed of 1,000,000 shares, increasing direct ownership by 30% to 4,322,917 units (SEC Form 4)