UNITED MICROELECTRONICS CORP
corporate_fare Company Profile
UNITED MICROELECTRONICS CORP (NYSE:UMC) is a publicly traded company in the Technology sector. Wiseek has independently scored 30 items for UMC at importance 7 or higher on its 1–10 market-impact scale. Its most recent item scored 7 or higher is dated 2026-10-28, rated 8/10. Across its 20 most recent items scored 7 or higher, the top rating is 8/10, with 7 rated 8 or above. Recent SEC coverage for UMC spans 6-K, 4.
Recent high-impact activity:
- UMC Posts 34% Gross Margin, Record Wafer Shipments; Board Approves Extra $3.2B Capex
- UMC Misses Q3 Estimates as Budget Smartphone Demand Softens; Board Adds $3.2B Capex
- UMC Q3 Revenue Up 25.6% YoY; Board Adds US$3.2B Capex Budget
- UMC Commits NT$7.0B to Applied Materials Equipment as September Revenue Climbs 27%
- UMC September Sales Jump 27% to NT$25.35B, Extending Growth Streak
Financial Snapshot
Short Interest & Short Volume
2.50 days to coverFINRA reported short interest of 30,184,605 shares in UMC as of the October 15, 2026 settlement, a 8.6% increase from the prior period — about 2.5 days to cover at its recent average daily volume. On October 28, 2026, 63.6% of UMC volume reported to FINRA trade-reporting facilities was marked short.
Daily short sale volume covers trades reported to FINRA trade-reporting facilities and is not the same as short interest (bi-monthly reported positions). Source: FINRA — FINRA is the owner and source of this short interest and short sale volume data; it may not be redistributed.
Dilution Risk
Low riskFiling-implied dilution signals for UMC, detected from its recent SEC filings · based on capital-structure filings through 2026-10-05.
US$1.8B Convertible Bond Priced · 0% Coupon with Negative Yields
A filing-implied signal, not a realized share count. How Wiseek tracks dilution →
Insider Transactions
UMC files as a Foreign Private Issuer (FPI). Under SEC Exchange Act Section 16(a), officers, directors, and 10% owners of FPIs are exempt from Form 4 insider-transaction reporting requirements. Comparable disclosures, when applicable, appear in the company's Form 20-F (annual) or Form 6-K (interim) filings on SEC EDGAR.