UMC — UNITED MICROELECTRONICS CORP
Reported value held$2.89B
Funds holding (latest)41
SectorTechnology
Funds holding (Q2 2026)26
Institutional value$2.73B · 100.42M sh
New / Add / Cut / Exit5 / 13 / 8 / 4
Top-5 / Top-10 concentration72.7% / 96.4%
Institutional holdings change
Accumulating +10.2%
(+9.29M sh)
Institutional value change
Up +233.7%
As of Q2 2026, 26 SEC-registered investment managers reported holding UMC (UNITED MICROELECTRONICS CORP) in their latest 13F filings, with a combined reported value of $2.73B across 100.42M shares. That is +10.2% by share count (+9.29M shares) versus the previous quarter, while reported value moved +233.7%. Ownership is concentrated: the five largest holders account for 72.7% of reported value and the top ten for 96.4%.
Compared with the prior quarter, 5 opened new positions, 13 added to existing stakes, 8 trimmed, 4 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
UMC is classified in the Technology sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 26 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 31.54M | $858.32M | 0.01% | Add |
| UBS Group AG history | 11.81M | $321.44M | 0.04% | Add |
| Goldman Sachs Group history | 11.11M | $302.30M | 0.03% | Add |
| Bank of America Corp history | 10.18M | $277.03M | 0.02% | Add |
| Morgan Stanley history | 8.29M | $225.45M | 0.01% | Reduce |
| AQR Capital Management history | 7.72M | $210.01M | 0.07% | Reduce |
| Citigroup Inc history | 5.41M | $147.32M | 0.05% | Add |
| Northern Trust Corp history | 3.99M | $108.48M | 0.01% | Add |
| JPMorgan Chase & Co history | 3.66M | $98.26M | 0.01% | New |
| Two Sigma Investments history | 3.09M | $84.05M | 0.07% | Reduce |
| Citadel Advisors history | 1.50M | $40.84M | 0.01% | Add |
| Millennium Management history | 625.98K | $17.03M | 0.01% | Reduce |
| Wellington Management Group history | 231.01K | $6.29M | 0.00% | Add |
| Deutsche Bank AG history | 211.69K | $5.76M | 0.00% | New |
| D. E. Shaw & Co history | 196.31K | $5.34M | 0.00% | Reduce |
| Lazard Asset Management history | 140.11K | $3.81M | 0.01% | Add |
| Marshall Wace history | 139.51K | $3.80M | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 136.61K | $3.72M | 0.00% | Add |
| PNC Financial Services history | 118.01K | $3.21M | 0.00% | Reduce |
| Invesco Ltd history | 115.68K | $3.15M | 0.00% | Add |
| Moore Capital Management history | 94.10K | $2.56M | 0.04% | New |
| Maverick Capital history | 28.76K | $782.53K | 0.01% | New |
| Franklin Resources history | 26.11K | $710.36K | 0.00% | Add |
| Fidelity International (FIL) history | 22.30K | $606.89K | 0.00% | Reduce |
| Wells Fargo & Co history | 15.43K | $419.85K | 0.00% | Add |
| Legal & General Investment Management America history | 11.64K | $316.63K | 0.00% | New |
Q1 2026 — 25 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 27.50M | $246.91M | 0.01% | Add |
| AQR Capital Management history | 14.71M | $132.13M | 0.06% | Add |
| Two Sigma Investments history | 9.66M | $86.71M | 0.07% | Add |
| Morgan Stanley history | 8.78M | $78.83M | 0.01% | Add |
| UBS Group AG history | 8.51M | $76.46M | 0.01% | Add |
| Goldman Sachs Group history | 5.87M | $52.76M | 0.01% | Add |
| Citigroup Inc history | 4.30M | $38.58M | 0.02% | Add |
| Northern Trust Corp history | 3.20M | $28.73M | 0.00% | Reduce |
| Bank of America Corp history | 2.60M | $23.38M | 0.00% | Reduce |
| D. E. Shaw & Co history | 1.89M | $16.99M | 0.01% | Add |
| Millennium Management history | 1.85M | $16.65M | 0.01% | Add |
| Citadel Advisors history | 1.06M | $9.51M | 0.00% | Reduce |
| Marshall Wace history | 205.41K | $1.84M | 0.00% | Reduce |
| PNC Financial Services history | 166.76K | $1.50M | 0.00% | Hold |
| Bridgewater Associates history | 134.03K | $1.20M | 0.01% | New |
| Arrowstreet Capital history | 129.90K | $1.17M | 0.00% | Add |
| Fidelity Management & Research (FMR) history | 120.15K | $1.08M | 0.00% | Reduce |
| Invesco Ltd history | 102.76K | $922.82K | 0.00% | Add |
| Wellington Management Group history | 97.23K | $873.10K | 0.00% | New |
| Lazard Asset Management history | 69.99K | $628.49K | 0.00% | New |
| Fidelity International (FIL) history | 63.26K | $568.07K | 0.00% | Reduce |
| Amundi US history | 49.95K | $448.58K | 0.00% | New |
| Prudential Financial history | 23.57K | $211.66K | 0.00% | Hold |
| Franklin Resources history | 23.17K | $208.07K | 0.00% | Hold |
| Wells Fargo & Co history | 7.97K | $71.61K | 0.00% | Add |
Q4 2025 — 24 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 26.98M | $212.09M | 0.00% | Add |
| Vanguard Group history | 13.52M | $106.30M | 0.00% | Reduce |
| AQR Capital Management history | 9.46M | $74.39M | 0.04% | Add |
| Morgan Stanley history | 7.67M | $60.28M | 0.00% | Reduce |
| Two Sigma Investments history | 5.68M | $44.61M | 0.07% | Add |
| Bank of America Corp history | 5.60M | $44.05M | 0.00% | Reduce |
| UBS Group AG history | 4.96M | $39.02M | 0.01% | Add |
| Marshall Wace history | 4.74M | $37.25M | 0.03% | Add |
| Goldman Sachs Group history | 4.73M | $37.15M | 0.01% | Add |
| Northern Trust Corp history | 3.22M | $25.29M | 0.00% | Reduce |
| Citigroup Inc history | 3.01M | $23.65M | 0.01% | Add |
| Balyasny Asset Management history | 1.98M | $15.57M | 0.02% | Add |
| Citadel Advisors history | 1.27M | $9.96M | 0.00% | Add |
| D. E. Shaw & Co history | 870.26K | $6.84M | 0.00% | New |
| Millennium Management history | 817.00K | $6.42M | 0.00% | Add |
| Fidelity Management & Research (FMR) history | 213.69K | $1.68M | 0.00% | Reduce |
| PNC Financial Services history | 166.56K | $1.31M | 0.00% | Add |
| JPMorgan Chase & Co history | 141.34K | $1.11M | 0.00% | Reduce |
| Arrowstreet Capital history | 128.82K | $1.01M | 0.00% | New |
| Invesco Ltd history | 89.94K | $706.89K | 0.00% | Add |
| Fidelity International (FIL) history | 78.85K | $619.79K | 0.00% | New |
| Prudential Financial history | 23.57K | $187.62K | 0.00% | Hold |
| Franklin Resources history | 23.17K | $182.12K | 0.00% | Reduce |
| Wells Fargo & Co history | 3.27K | $25.74K | 0.00% | Add |
Q3 2025 — 22 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 24.14M | $182.99M | 0.00% | Reduce |
| Morgan Stanley history | 21.85M | $165.63M | 0.01% | Hold |
| Vanguard Group history | 14.25M | $108.03M | 0.00% | Reduce |
| Bank of America Corp history | 7.39M | $56.01M | 0.00% | Add |
| Goldman Sachs Group history | 4.41M | $33.44M | 0.00% | Reduce |
| UBS Group AG history | 4.15M | $31.47M | 0.01% | Reduce |
| Two Sigma Investments history | 3.53M | $26.76M | 0.04% | Add |
| Northern Trust Corp history | 3.43M | $25.99M | 0.00% | Reduce |
| Marshall Wace history | 2.80M | $21.23M | 0.02% | New |
| Citigroup Inc history | 2.30M | $17.40M | 0.01% | Reduce |
| AQR Capital Management history | 971.85K | $7.37M | 0.01% | Reduce |
| JPMorgan Chase & Co history | 608.03K | $4.61M | 0.00% | Reduce |
| Millennium Management history | 396.31K | $3.00M | 0.00% | Add |
| Citadel Advisors history | 215.44K | $1.63M | 0.00% | Reduce |
| Fidelity Management & Research (FMR) history | 215.43K | $1.63M | 0.00% | Reduce |
| PNC Financial Services history | 145.13K | $1.10M | 0.00% | Add |
| Balyasny Asset Management history | 93.82K | $711.19K | 0.00% | Reduce |
| Invesco Ltd history | 89.19K | $676.09K | 0.00% | Add |
| Prudential Financial history | 23.57K | $178.66K | 0.00% | Hold |
| Franklin Resources history | 23.37K | $177.16K | 0.00% | Reduce |
| Legal & General Investment Management America history | 14.13K | $107.14K | 0.00% | Hold |
| Wells Fargo & Co history | 2.82K | $21.40K | 0.00% | Reduce |
Q2 2025 — 23 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 24.32M | $186.03M | 0.00% | Add |
| Morgan Stanley history | 21.81M | $166.88M | 0.01% | Add |
| UBS Group AG history | 16.94M | $129.58M | 0.02% | Add |
| Vanguard Group history | 14.83M | $113.41M | 0.00% | Reduce |
| Bank of America Corp history | 7.04M | $53.89M | 0.00% | Reduce |
| Goldman Sachs Group history | 5.59M | $42.73M | 0.01% | Reduce |
| Citigroup Inc history | 3.73M | $28.52M | 0.01% | Reduce |
| Northern Trust Corp history | 3.62M | $27.67M | 0.00% | Add |
| JPMorgan Chase & Co history | 1.67M | $12.77M | 0.00% | Add |
| AQR Capital Management history | 1.45M | $11.06M | 0.01% | Add |
| Citadel Advisors history | 684.78K | $5.24M | 0.00% | Reduce |
| D. E. Shaw & Co history | 477.79K | $3.66M | 0.00% | Reduce |
| Balyasny Asset Management history | 463.48K | $3.55M | 0.01% | Add |
| Two Sigma Investments history | 378.63K | $2.90M | 0.01% | Reduce |
| Arrowstreet Capital history | 317.27K | $2.43M | 0.00% | New |
| Fidelity Management & Research (FMR) history | 220.35K | $1.69M | 0.00% | Reduce |
| PNC Financial Services history | 105.37K | $806.06K | 0.00% | Add |
| Invesco Ltd history | 87.64K | $670.42K | 0.00% | Reduce |
| Millennium Management history | 58.78K | $449.67K | 0.00% | Reduce |
| Franklin Resources history | 24.73K | $189.22K | 0.00% | Add |
| Prudential Financial history | 23.57K | $180.31K | 0.00% | Hold |
| Legal & General Investment Management America history | 14.13K | $107.91K | 0.00% | New |
| Wells Fargo & Co history | 5.80K | $44.37K | 0.00% | Add |
Q1 2025 — 22 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| BlackRock Inc history | 22.80M | $163.00M | 0.00% | Reduce |
| Morgan Stanley history | 18.00M | $128.71M | 0.01% | Add |
| Vanguard Group history | 15.71M | $112.34M | 0.00% | Reduce |
| UBS Group AG history | 15.45M | $110.44M | 0.02% | Add |
| Bank of America Corp history | 7.98M | $57.05M | 0.01% | Add |
| Millennium Management history | 7.91M | $56.58M | 0.03% | Reduce |
| Citigroup Inc history | 6.03M | $43.12M | 0.02% | Add |
| Goldman Sachs Group history | 5.66M | $40.44M | 0.01% | Add |
| Northern Trust Corp history | 3.34M | $23.85M | 0.00% | Add |
| Citadel Advisors history | 2.69M | $19.23M | 0.00% | Reduce |
| AQR Capital Management history | 1.44M | $10.26M | 0.01% | Add |
| Two Sigma Investments history | 1.28M | $9.18M | 0.02% | Reduce |
| D. E. Shaw & Co history | 686.25K | $4.91M | 0.01% | Add |
| Marshall Wace history | 662.82K | $4.74M | 0.01% | Reduce |
| Fidelity Management & Research (FMR) history | 551.45K | $3.94M | 0.00% | Reduce |
| Balyasny Asset Management history | 390.48K | $2.79M | 0.01% | Add |
| Invesco Ltd history | 114.80K | $820.78K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 114.00K | $815.10K | 0.00% | Reduce |
| PNC Financial Services history | 90.51K | $647.14K | 0.00% | Add |
| Prudential Financial history | 23.57K | $168.53K | 0.00% | Hold |
| Franklin Resources history | 17.94K | $128.28K | 0.00% | Reduce |
| Wells Fargo & Co history | 3.32K | $23.76K | 0.00% | Reduce |
New Positions (Q2 2026)
- JPMorgan Chase & Co 3.66M sh · $98.26M
- Deutsche Bank AG 211.69K sh · $5.76M
- Moore Capital Management 94.10K sh · $2.56M
- Maverick Capital 28.76K sh · $782.53K
- Legal & General Investment Management America 11.64K sh · $316.63K
Fully Exited (vs previous quarter)
- Bridgewater Associates sold 134.03K sh · $1.20M
- Arrowstreet Capital sold 129.90K sh · $1.17M
- Amundi US sold 49.95K sh · $448.58K
- Prudential Financial sold 23.57K sh · $211.66K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 | Q2 2022 | Q1 2022 | Q4 2021 | Q3 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | 31.54M | 27.50M | 26.98M | 24.14M | 24.32M | 22.80M | 23.62M | 22.96M | — | — | — | — | — | — | — | — | — | — | — | — |
| UBS Group AG | 11.81M | 8.51M | 4.96M | 4.15M | 16.94M | 15.45M | 9.58M | 7.73M | 6.73M | 8.82M | 6.75M | 7.50M | 5.51M | 8.04M | 8.01M | 8.83M | 9.20M | 7.89M | 7.23M | 12.94M |
| Goldman Sachs Group | 11.11M | 5.87M | 4.73M | 4.41M | 5.59M | 5.66M | 5.12M | 4.61M | 6.07M | 6.93M | 4.50M | 7.83M | 4.12M | 9.52M | 6.24M | 4.43M | 5.30M | 4.40M | 9.49M | 1.33M |
| Bank of America Corp | 10.18M | 2.60M | 5.60M | 7.39M | 7.04M | 7.98M | 4.99M | 9.38M | 8.53M | 7.67M | 4.28M | 3.14M | 3.33M | 3.58M | 1.66M | 2.26M | 2.75M | 6.36M | 5.47M | 3.17M |
| Morgan Stanley | 8.29M | 8.78M | 7.67M | 21.85M | 21.81M | 18.00M | 7.65M | 14.51M | 7.00M | 8.61M | 6.58M | 8.33M | 9.10M | 7.04M | 5.97M | 7.02M | 11.13M | 8.58M | 1.08M | 1.81M |
| AQR Capital Management | 7.72M | 14.71M | 9.46M | 971.85K | 1.45M | 1.44M | 982.84K | 92.87K | — | — | — | — | — | — | — | — | — | — | — | — |
| Citigroup Inc | 5.41M | 4.30M | 3.01M | 2.30M | 3.73M | 6.03M | 5.83M | 4.42M | 4.44M | 4.00M | 1.64M | 1.79M | 1.54M | 1.13M | 1.14M | 1.56M | 1.53M | 2.05M | 2.34M | 2.82M |
| Northern Trust Corp | 3.99M | 3.20M | 3.22M | 3.43M | 3.62M | 3.34M | 3.18M | 939.87K | 979.59K | 1.06M | 1.18M | 902.50K | 816.78K | 827.07K | 812.08K | 773.79K | 587.96K | 712.67K | 758.33K | 896.54K |
| JPMorgan Chase & Co | 3.66M | — | 141.34K | 608.03K | 1.67M | 114.00K | 2.02M | 806.00K | 752.74K | 544.84K | 1.22M | 1.01M | 1.12M | 777.16K | 106.70K | 329.01K | 897.42K | 1.60M | 738.23K | 1.05M |
| Two Sigma Investments | 3.09M | 9.66M | 5.68M | 3.53M | 378.63K | 1.28M | 3.33M | 7.22M | 1.96M | 13.20K | 194.50K | 419.23K | 346.25K | 1.31M | 3.12M | 4.29M | 1.92M | 3.16M | 835.67K | 1.78M |
| Citadel Advisors | 1.50M | 1.06M | 1.27M | 215.44K | 684.78K | 2.69M | 2.87M | 1.40M | 828.42K | 62.80K | 153.92K | 315.06K | 280.28K | 1.39M | 1.40M | 2.73M | 1.77M | 2.48M | 1.32M | 1.31M |
| Millennium Management | 625.98K | 1.85M | 817.00K | 396.31K | 58.78K | 7.91M | 14.33M | 448.95K | 755.03K | 2.36M | 3.78M | 2.83M | 2.70M | 4.73M | 4.43M | 7.05M | 3.40M | 3.60M | 3.66M | 1.15M |
| Wellington Management Group | 231.01K | 97.23K | — | — | — | — | 58.33K | — | — | — | — | — | — | — | 66.93K | 188.73K | 173.14K | 173.14K | 173.14K | 230.59K |
| Deutsche Bank AG | 211.69K | — | — | — | — | — | — | 14.20K | — | 201.85K | 160.71K | — | 356.19K | 266.29K | 15.63K | 912.45K | 6.60K | 187.64K | 386.24K | 1.04M |
| D. E. Shaw & Co | 196.31K | 1.89M | 870.26K | — | 477.79K | 686.25K | 617.75K | — | — | — | 109.42K | 943.67K | 26.37K | 238.14K | 3.40M | 47.34K | — | — | — | — |
| Lazard Asset Management | 140.11K | 69.99K | — | — | — | — | — | 5.32K | — | — | — | — | 43.05K | 43.05K | 43.05K | 43.05K | — | — | — | — |
| Marshall Wace | 139.51K | 205.41K | 4.74M | 2.80M | — | 662.82K | 3.38M | 7.83M | 5.25M | 671.05K | 62.93K | — | 57.90K | — | 710.58K | 1.02M | 3.15M | 2.18M | 5.54K | — |
| Fidelity Management & Research (FMR) | 136.61K | 120.15K | 213.69K | 215.43K | 220.35K | 551.45K | 557.81K | 300.74K | 102.74K | 116.22K | 113.39K | 62.00K | 66.01K | 62.49K | 59.58K | 34.59K | 33.78K | 32.26K | 2.75K | 1.42K |
| PNC Financial Services | 118.01K | 166.76K | 166.56K | 145.13K | 105.37K | 90.51K | 83.85K | 78.47K | 77.05K | 76.70K | 76.06K | 73.30K | 71.63K | 63.35K | 61.46K | 57.21K | 46.92K | 41.53K | 39.30K | 41.65K |
| Invesco Ltd | 115.68K | 102.76K | 89.94K | 89.19K | 87.64K | 114.80K | 266.06K | 278.71K | 246.16K | 232.95K | 255.27K | 232.37K | 119.46K | 127.67K | 109.52K | 109.41K | 116.89K | 141.83K | 168.23K | 227.21K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
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