UMC United Microelectronics Corporation
United Microelectronics Corporation (UMC) Institutional Ownership
What the institutions did with UMC last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 31.5M | 17.5% |
| UBS Group AG | 11.6M | 6.5% |
| GOLDMAN SACHS GROUP INC | 11.1M | 6.2% |
| BANK OF AMERICA CORP /DE/ | 10.2M | 5.7% |
| VANGUARD CAPITAL MANAGEMENT LLC | 8.6M | 4.8% |
| MORGAN STANLEY | 8.3M | 4.6% |
| AQR CAPITAL MANAGEMENT LLC | 7.7M | 4.3% |
| Rafferty Asset Management, LLC | 7.7M | 4.2% |
| ACADIAN ASSET MANAGEMENT LLC | 5.8M | 3.2% |
| Man Group plc | 5.6M | 3.1% |
| CITIGROUP INC | 5.4M | 3.0% |
| BARCLAYS PLC | 4.9M | 2.7% |
| STATE STREET CORP | 4.9M | 2.7% |
| NEUBERGER BERMAN GROUP LLC | 4.1M | 2.3% |
| NORTHERN TRUST CORP | 4.0M | 2.2% |
| JPMORGAN CHASE & CO | 3.7M | 2.0% |
| DIMENSIONAL FUND ADVISORS LP | 3.2M | 1.8% |
| TWO SIGMA INVESTMENTS, LP | 3.1M | 1.7% |
| Creative Planning | 2.5M | 1.4% |
| Tidal Investments LLC | 2.4M | 1.3% |
| Empowered Funds, LLC | 1.9M | 1.0% |
| MATTHEWS INTERNATIONAL CAPITAL MANAGEMENT LLC | 1.5M | 0.8% |
| Connor, Clark & Lunn Investment Management Ltd. | 1.3M | 0.7% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.2M | 0.7% |
| BNP PARIBAS FINANCIAL MARKETS | 1.1M | 0.6% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BANK OF AMERICA CORP /DE/ | Increased | 2.6M | 10.2M | +7.6M |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 14.7M | 7.7M | -7.0M |
| TWO SIGMA INVESTMENTS, LP | Reduced | 9.7M | 3.1M | -6.6M |
| GOLDMAN SACHS GROUP INC | Increased | 5.9M | 11.1M | +5.2M |
| Qube Research & Technologies Ltd | Sold Out | 5.1M | 0 | -5.1M |
| BlackRock, Inc. | Increased | 27.5M | 31.5M | +4.0M |
| NEUBERGER BERMAN GROUP LLC | Increased | 114.1K | 4.1M | +4.0M |
| UBS Group AG | Increased | 8.2M | 11.6M | +3.5M |
| JPMORGAN CHASE & CO | Increased | 260.7K | 3.7M | +3.4M |
| Rafferty Asset Management, LLC | Increased | 5.0M | 7.7M | +2.7M |
| JANE STREET GROUP, LLC | Sold Out | 2.6M | 0 | -2.6M |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 8.1M | 5.8M | -2.4M |
| Empowered Funds, LLC | New | 0 | 1.9M | +1.9M |
| D. E. Shaw & Co., Inc. | Reduced | 1.9M | 196.3K | -1.7M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 2.8M | 1.2M | -1.5M |
| MILLENNIUM MANAGEMENT LLC | Reduced | 1.8M | 505.6K | -1.3M |
| CITIGROUP INC | Increased | 4.3M | 5.4M | +1.1M |
| E Fund Management Co., Ltd. | New | 0 | 995.8K | +995.8K |
| NOMURA HOLDINGS INC | New | 0 | 813.9K | +813.9K |
| NORTHERN TRUST CORP | Increased | 3.2M | 4.0M | +788.0K |
| Tidal Investments LLC | Increased | 1.6M | 2.4M | +759.1K |
| Connor, Clark & Lunn Investment Management Ltd. | Increased | 710.1K | 1.3M | +632.9K |
| SG Americas Securities, LLC | Increased | 99.9K | 687.0K | +587.1K |
| Aquatic Capital Management LLC | Reduced | 604.0K | 26.8K | -577.2K |
| CITADEL ADVISORS LLC | Reduced | 765.3K | 210.2K | -555.2K |
| MORGAN STANLEY | Reduced | 8.8M | 8.3M | -492.3K |
| MATTHEWS INTERNATIONAL CAPITAL MANAGEMENT LLC | Increased | 977.6K | 1.5M | +488.0K |
| Squarepoint Ops LLC | Increased | 123.5K | 603.4K | +479.9K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 1.6M | 1.1M | -454.9K |
| B. Metzler seel. Sohn & Co. AG | Reduced | 653.5K | 223.0K | -430.5K |
| Moran Wealth Management, LLC | Reduced | 910.4K | 500.1K | -410.3K |
| Eurizon Capital SGR S.p.A. | Reduced | 524.2K | 120.4K | -403.8K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 9.0M | 8.6M | -386.5K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 575.7K | 201.0K | -374.7K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 2.8M | 3.2M | +369.1K |
| North of South Capital LLP | Reduced | 405.1K | 50.7K | -354.4K |
| CAPSTONE INVESTMENT ADVISORS, LLC | Reduced | 364.2K | 10.8K | -353.3K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Reduced | 1.0M | 768.6K | -280.8K |
| LSV ASSET MANAGEMENT | Reduced | 694.2K | 434.2K | -260.1K |
| Nuveen, LLC | New | 0 | 257.7K | +257.7K |
| LMR Partners LLP | New | 0 | 255.6K | +255.6K |
| Baird Financial Group, Inc. | Reduced | 425.9K | 175.6K | -250.3K |
| OLD MISSION CAPITAL LLC | Sold Out | 225.8K | 0 | -225.8K |
| DEUTSCHE BANK AG\ | New | 0 | 211.7K | +211.7K |
| RHUMBLINE ADVISERS | Reduced | 667.6K | 493.3K | -174.3K |
| HRT FINANCIAL LP | Sold Out | 164.9K | 0 | -164.9K |
| STIFEL FINANCIAL CORP | Sold Out | 163.8K | 0 | -163.8K |
| STOREBRAND ASSET MANAGEMENT AS | Reduced | 307.4K | 146.9K | -160.5K |
| Walleye Trading LLC | Increased | 67.3K | 222.6K | +155.4K |
| BARCLAYS PLC | Increased | 4.7M | 4.9M | +153.4K |
| CAPITAL FUND MANAGEMENT S.A. | Increased | 745.3K | 897.3K | +152.0K |
| Russell Investments Group, Ltd. | Increased | 75.6K | 223.0K | +147.4K |
| Engineers Gate Manager LP | Reduced | 208.3K | 64.6K | -143.8K |
| Man Group plc | Reduced | 5.7M | 5.6M | -135.5K |
| STATE STREET CORP | Reduced | 5.0M | 4.9M | -135.1K |
| Bridgewater Associates, LP | Sold Out | 134.0K | 0 | -134.0K |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 97.2K | 231.0K | +133.8K |
| US BANCORP \DE\ | Reduced | 815.6K | 683.4K | -132.2K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Sold Out | 129.9K | 0 | -129.9K |
| Robeco Institutional Asset Management B.V. | Reduced | 311.5K | 185.2K | -126.3K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.