400 institutions reported holding $5.36B of UNITED MICROELECTRONICS CORP (UMC) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($858.3M), UBS Group AG ($321.4M), GOLDMAN SACHS GROUP INC ($302.3M), VANGUARD GROUP INC ($279.8M), BANK OF AMERICA CORP /DE/ ($277.0M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30