United Microelectronics stock reports 27.22 percent sales growth

Published on 10/07/2026 at 17:15 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

United Microelectronics stock reported NT$25,350,431,000 in September sales on October 6, 2026, up 27.22 percent year over year. The company also priced US$1.8 billion in bonds.

UMC, US9108734057, Illustration mit AI erstellt.

United Microelectronics stock was trading at USD 23.30 on the NYSE on October 7, 2026 at 11:14 a.m. ET, while the foundry reported September net sales of NT$25,350,431,000, up 27.22 percent from September 2025. The fresh sales figure keeps operating growth in view as investors assess the company's new financing plan.

September sales accelerate

According to StockTitan on October 6, 2026, UMC's year-to-date sales reached NT$204,009,681,000, 16.08 percent above the comparable 2025 period. September sales therefore grew faster than the year-to-date base, giving the latest monthly report a stronger profile than the cumulative figure.

The latest quarterly comparison points in the same direction. Yahoo Finance reported on October 5, 2026 that second-quarter revenue was NT$68.73 billion, up 17 percent year over year, while wafer shipments increased 10.6 percent sequentially. Revenue from 22- and 28-nanometer technologies represented 37 percent of quarterly wafer revenue.

Convertible bonds add dilution risk

On October 5, 2026, StockTitan reported that UMC priced US$1.8 billion of unsecured overseas convertible bonds in two US$900 million tranches. Both carry a 0 percent coupon, and the proceeds are earmarked for machinery, equipment and plant construction.

The financing brings a clear trade-off. UMC estimates that full conversion at the initial conversion prices would dilute existing shareholders by 2.34 percent, while the conversion prices of NT$202.06 and NT$179.19 stand above the October 5, 2026 TWSE close of NT$152.50. The bonds are scheduled for issuance on October 13, 2026, according to the filing.

For investors, the key question is whether the additional capacity converts the sales momentum into sustained earnings growth. StockAnalysis lists October 28, 2026 as the next confirmed earnings date.

Stock stays below yearly high

UMC's NYSE price of USD 23.30 on October 7, 2026 remained USD 5.66 below the 52-week high of USD 28.96 and USD 16.33 above the 52-week low of USD 6.97. The same session showed a day range of USD 22.85 to USD 23.34, with volume of 2,658,818 shares and a market capitalization of USD 58.1 billion.

The market picture is therefore split between faster recent sales growth and a financing structure that can expand the share base. The next earnings release will provide the first regular checkpoint for utilization, margins and the returns expected from the planned equipment and plant spending.