United Microelectronics Corporation
2303 · Taiwan Stock Exchange (TWSE) · Semiconductors · US listing: UMC
About the company
United Microelectronics Corporation (UMC) is the world's third-largest dedicated semiconductor foundry, producing chips at mature and specialty process nodes ranging from 0.5 micron down to 22nm. The company serves fabless customers in communications, consumer electronics, computing, and automotive sectors, with specialty technology platforms for power management, RF, embedded flash, and display driver ICs. UMC operates fabs in Taiwan, Singapore, and Japan (jointly with Toyota).
| Exchange | Taiwan Stock Exchange (TWSE) |
| Ticker | 2303 |
| Sector | Semiconductors |
| US listing | UMC |
| Indicative market cap USD | $19.57B |
| Website | Visit website |
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Where to buy
Trades in the US as UMC — available through most US brokerage accounts.
On its home market (Taiwan Stock Exchange (TWSE)), it is accessible through global brokers that offer that exchange:
- Interactive Brokers — Direct access to 90+ markets worldwide, including many emerging exchanges.
- Saxo Bank — Multi-market access across Asia, Europe and the Middle East.
- Charles Schwab (Global) — Foreign ordinary shares on select markets; US-listed ADRs and ETFs.
- Fidelity International Trading — International stock trading on a number of developed and emerging markets.
- Taiwan Stock Exchange — official exchange listing
Availability information only — not a recommendation or an offer to buy. Confirm eligibility, fees and current availability with your broker.
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Company data and any live price are indicative, may be delayed or inaccurate, and are for research only — not investment advice. Verify with the exchange, the company's filings and your broker.