UMC rises as investors continue to digest strong results, AI expansion plans

United Microelectronics (UMC) is up 3.9% today. Here is some analysis on what might have caused this price movement.

Analysis: The move appears tied to continued optimism around UMC’s late-July earnings, higher capital spending plans, and steady signs of demand in its mature-node and specialty chip business. There does not appear to be a major new company-specific announcement today, so the gain could be an extension of the market’s favorable reaction to recent operating updates.

Details:

UMC’s second-quarter 2026 revenue rose 17.0% year over year, while operating income increased sharply from the prior quarter, showing stronger factory utilization and improved profitability.

The company raised its 2026 capital expenditure budget to support expansion in Singapore and at its Tainan campus, reflecting expectations for growing demand tied to AI-related connectivity, power, and photonics applications.

Management guided for third-quarter utilization to exceed 90% and projected high-single-digit shipment growth, signaling that near-term demand momentum remained stable after the June quarter.

UMC’s July 2026 monthly sales increased 18.98% from a year earlier, which likely reinforced the view that the company’s recovery was continuing into the third quarter.

Sources:

SEC, UMC, MarketScreener

Disclaimer: This price movement analysis was generated with the help of AI. Please double-check the information provided for mistakes.

$UMC Insider Trading Activity

$UMC insiders have traded $UMC stock on the open market 2 times in the past 6 months. Of those trades, 0 have been purchases and 2 have been sales.

Here’s a breakdown of recent trading of $UMC stock by insiders over the last 6 months:

CHITUNG LIU (CFO & SVP) sold 1,900,000 shares for an estimated $294,291,000
CHE-JEN HU (Vice President) sold 10,000 shares for an estimated $1,713,000

To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API insider transaction endpoint.

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$UMC Hedge Fund Activity

We have seen 222 institutional investors add shares of $UMC stock to their portfolio, and 156 decrease their positions in their most recent quarter.

Here are some of the largest recent moves:

BANK OF AMERICA CORP /DE/ added 7,577,990 shares (+291.1%) to their portfolio in Q2 2026, for an estimated $206,197,107
AQR CAPITAL MANAGEMENT LLC removed 6,995,905 shares (-47.5%) from their portfolio in Q2 2026, for an estimated $190,358,575
TWO SIGMA INVESTMENTS, LP removed 6,566,550 shares (-68.0%) from their portfolio in Q2 2026, for an estimated $178,675,825
GOLDMAN SACHS GROUP INC added 5,234,921 shares (+89.1%) to their portfolio in Q2 2026, for an estimated $142,442,200
QUBE RESEARCH & TECHNOLOGIES LTD removed 5,101,879 shares (-100.0%) from their portfolio in Q2 2026, for an estimated $138,822,127
BLACKROCK, INC. added 4,048,574 shares (+14.7%) to their portfolio in Q2 2026, for an estimated $110,161,698
NEUBERGER BERMAN GROUP LLC added 4,020,723 shares (+3524.9%) to their portfolio in Q2 2026, for an estimated $109,403,872

To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API 13F endpoint.

This article is not financial advice. See Quiver Quantitative's disclaimers for more information. Note that there may be inaccuracies due to mistakes in ticker-mapping, and other anomalies.