New York, Jan 27, 2026, 13:26 (EST) — Regular session
- UMC’s shares listed in the U.S. jumped roughly 10% on Tuesday, nearing a new 52-week peak.
- No immediate company news clarified the move, leaving focus on Wednesday’s quarterly earnings and guidance.
- Investors are pushing chip stocks higher as a wider tech rally gains momentum in U.S. equities, with a packed week of earnings and the Fed’s moves on the horizon.
United Microelectronics Corporation’s U.S.-listed shares surged roughly 10% to near $12.46 on Tuesday, hitting $12.68 at one point — marking a 52-week peak — during trading in New York. 1
The sharp move is significant since UMC’s quarterly report drops Wednesday, with investors eager for clues on demand and pricing for “mature” chips found in cars and industrial equipment. As a contract chipmaker — a foundry — UMC’s guidance could reveal how aggressively customers are placing orders for 2026.
The rally comes amid a busy week for markets, with earnings reports flooding in and the Federal Reserve in session. Chip stocks often surge sharply when risk appetite heats up, frequently doing so without a clear headline driving the move.
Market data site Finviz reported no obvious trigger for the intraday surge. Its dashboard reveals UMC shares have soared over 100% in the last year, a jump likely fueling both momentum trades and swift profit-taking. 2
UMC’s investor site shows a “4Q 2025 Earnings Release & Investor Conference Call” set for Jan. 28. Their January monthly sales report will follow on Feb. 5. The company trades on the Taiwan Stock Exchange (2303) and the New York Stock Exchange (UMC). 3
UMC calls itself a global semiconductor foundry, manufacturing chips based on customer designs for sectors like communications, consumer electronics, and computing. Its shares trade in the U.S. as an American depositary receipt (ADR), which is a U.S.-listed certificate representing shares held abroad. 4
The broader market showed strength. On Tuesday, the S&P 500 hit a record high, and the Nasdaq climbed to its highest level in nearly three months as investors sifted through a fresh batch of earnings and prepared for reports from major tech firms. “We have an opportunity to see if investors are okay with increasing spending CapEx to chase the AI dream,” said Art Hogan, market strategist at B. Riley Wealth. 5
Chip stocks were boosted by new sector developments. Micron announced plans for a $24 billion chip factory in Singapore, aiming to expand capacity in a strained memory market. TrendForce analyst Bryan Ao noted that “demand for high-performance storage equipment has been growing much faster than expected.” 6
UMC’s latest gains hinge on Wednesday’s results and guidance. Investors want to see clues on utilization rates, customer inventory levels, and pricing stability for older-generation tech — factors that can nudge margins with even slight changes.
But the situation is double-edged. Should UMC’s forecast signal waning order flow, softer pricing, or clients postponing bookings, the recent surge in its stock could reverse sharply—particularly as broader markets remain heavily focused on tech.
UMC is set to report earnings on Jan. 28, followed by an investor call that could move the stock. Traders will also watch for any Fed policy clues this week, along with UMC’s monthly sales figures due Feb. 5, offering a clearer picture of short-term demand.
