United Microelectronics Corporation - Depositary Receipt (Common Stock)
US ˙ NYSE ˙ US9108734057

SecurityUMC / United Microelectronics Corporation - Depositary Receipt (Common Stock)
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership2,849,737 shares
Latest Disclosed Value $ 25,590,636
Dimensional Fund Advisors Lp reports 13.23% increase in ownership of UMC / United Microelectronics Corporation - Depositary Receipt (Common Stock)

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 2,849,737 shares of United Microelectronics Corporation - Depositary Receipt (Common Stock) (US:UMC) valued at $25,590,638 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,516,726 shares of United Microelectronics Corporation - Depositary Receipt (Common Stock). This represents a change in shares of 13.23% during the quarter. The current value of the position is $61,041,367 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 2,849,737 333,011 13.23 25,591 29.37 0.0011
2026-02-12 2025-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 2,516,726 432,141 20.73 19,781 25.19 0.0041
2025-11-12 2025-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 2,084,585 340,970 19.56 15,801 18.47 0.0034
2025-08-12 2025-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 1,743,615 311,498 21.75 13,339 30.27 0.0031
2025-05-13 2025-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 1,432,117 143,604 11.14 10,240 22.45 0.0025
2025-02-13 2024-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 1,288,513 214,783 20.00 8,362 -7.50 0.0020
2024-11-07 2024-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 1,073,730 356,349 49.67 9,041 43.90 0.0022
2024-08-09 2024-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 717,381 -2,951 -0.41 6,282 7.81 0.0016
2024-05-10 2024-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 720,332 65,792 10.05 5,827 5.20 0.0016
2024-02-07 2023-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 654,540 -25,047 -3.69 5,539 15.44 0.0016
2023-11-09 2023-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 679,587 -8,959 -1.30 4,798 -11.66 0.0016
2023-08-09 2023-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 688,546 4,134 0.60 5,431 -9.39 0.0017
2023-05-12 2023-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 684,412 15,251 2.28 5,994 149,750.00 0.0020
2023-02-09 2022-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 669,161 -128,047 -16.06 4 -99.91 0.0013
2022-11-10 2022-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 797,208 196,482 32.71 4,443 9.08 0.0017
2022-08-12 2022-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 600,726 3,797 0.64 4,073 -25.31 0.0015
2022-05-13 2022-03-31 13F UNITED MICROELECTRONICS ADR 910873405 596,929 335,240 128.11 5,453 78.09 0.0017
2022-02-09 2021-12-31 13F UNITED MICROELECTRONICS ADR 910873405 261,689 174,400 199.80 3,062 206.81 0.0009
2021-11-12 2021-09-30 13F UNITED MICROELECTRONICS ADR 910873405 87,289 -43,487 -33.25 998 -19.26 0.0003
2021-08-12 2021-06-30 13F UNITED MICROELECTRONICS ADR 910873405 130,776 -3,016 -2.25 1,236 1.39 0.0004
2021-05-14 2021-03-31 13F UNITED MICROELECTRONICS ADR 910873405 133,792 -61,751 -31.58 1,219 -26.03 0.0004
2021-03-08 2020-12-31 13F/A-2 UNITED MICROELECTRONICS ADR 910873405 195,543 -106,764 -35.32 1,648 13.81 0.0006
2021-02-11 2020-12-31 13F UNITED MICROELECTRONICS ADR 910873405 195,543 -106,764 1,648 595.1700
2020-11-12 2020-09-30 13F UNITED MICROELECTRONICS ADR 910873405 302,307 -4,006 -1.31 1,448 78.99 0.0006
2020-08-13 2020-06-30 13F UNITED MICROELECTRONICS ADR 910873405 306,313 -12,107 -3.80 809 17.08 0.0004
2020-05-14 2020-03-31 13F UNITED MICROELECTRONICS ADR 910873405 318,420 -27,590 -7.97 691 -25.46 0.0004
2020-02-14 2019-12-31 13F UNITED MICROELECTRONICS ADR 910873405 346,010 -110,622 -24.23 927 -2.83 0.0003
2019-11-12 2019-09-30 13F UNITED MICROELECTRONICS ADR 910873405 456,632 -10,300 -2.21 954 -7.56 0.0004
2019-08-13 2019-06-30 13F UNITED MICROELECTRONICS ADR 910873405 466,932 -43,101 -8.45 1,032 7.61 0.0004
2019-08-12 2019-03-31 13F/A-2 UNITED MICROELECTRONICS ADR 910873405 510,033 0 0.00 959 5.04 0.0004
2019-05-10 2019-03-31 13F UNITED MICROELECTRONICS ADR 910873405 510,033 0 959
2019-02-26 2018-12-31 13F/A-1 UNITED MICROELECTRONICS ADR 910873405 510,033 -85,485 -14.35 913 -40.56 0.0004
2019-02-13 2018-12-31 13F UNITED MICROELECTRONICS ADR 910873405 510,033 -85,485 913
2018-11-13 2018-09-30 13F UNITED MICROELECTRONICS ADR 910873405 595,518 -32,240 -5.14 1,536 -13.17 0.0006
2018-08-10 2018-06-30 13F UNITED MICROELECTRONICS ADR 910873405 627,758 4,835 0.78 1,769 9.67 0.0007
2018-05-11 2018-03-31 13F UNITED MICROELECTRONICS ADR 910873405 622,923 124,215 24.91 1,613 35.32 0.0007
2018-02-12 2017-12-31 13F UNITED MICROELECTRONICS ADR 910873405 498,708 9,700 1.98 1,192 -2.53 0.0005
2017-11-13 2017-09-30 13F UNITED MICROELECTRONICS ADR 910873405 489,008 77,481 18.83 1,223 21.81 0.0005
2017-08-11 2017-06-30 13F UNITED MICROELECTRONICS ADR 910873405 411,527 -4,700 -1.13 1,004 25.03 0.0005
2017-05-12 2017-03-31 13F UNITED MICROELECTRONICS ADR 910873405 416,227 0 0.00 803 10.30 0.0004
2017-02-09 2016-12-31 13F UNITED MICROELECTRONICS ADR 910873405 416,227 -65,455 -13.59 728 -18.29 0.0004
2016-11-10 2016-09-30 13F UNITED MICROELECTRONICS ADR 910873405 481,682 -19,482 -3.89 891 -10.72 0.0005
2016-08-09 2016-06-30 13F UNITED MICROELECTRONICS ADR 910873405 501,164 -169,527 -25.28 998 -28.46 0.0006
2016-05-13 2016-03-31 13F UNITED MICROELECTRONICS ADR 910873405 670,691 -35,669 -5.05 1,395 5.05 0.0008
2016-02-10 2015-12-31 13F UNITED MICROELECTRONICS ADR 910873405 706,360 0 0.00 1,328 15.98 0.0008
2015-11-13 2015-09-30 13F UNITED MICROELECTRONICS ADR 910873405 706,360 0 0.00 1,145 -20.93 0.0008
2015-08-14 2015-06-30 13F UNITED MICROELECTRONICS ADR 910873405 706,360 220,593 45.41 1,448 22.19 0.0009
2015-05-14 2015-03-31 13F UNITED MICROELECTRONICS ADR 910873405 485,767 -5 -0.00 1,185 7.53 0.0007
2015-02-06 2014-12-31 13F UNITED MICROELECTRONICS ADR 910873405 485,772 137,583 39.51 1,102 59.02 0.0007
2014-11-13 2014-09-30 13F UNITED MICROELECTRONICS ADR 910873405 348,189 -17,900 -4.89 693 -21.43 0.0005
2014-08-08 2014-06-30 13F UNITED MICROELECTRONICS ADR 910873405 366,089 0 0.00 882 15.90 0.0006
2014-05-14 2014-03-31 13F UNITED MICROELECTRONICS ADR 910873405 366,089 6,219 1.73 761 3.68 0.0006
2014-02-12 2013-12-31 13F UNITED MICROELECTRONICS ADR 910873405 359,870 154,709 75.41 734 73.93 0.0006
2013-11-13 2013-09-30 13F UNITED MICROELECTRONICS ADR 910873405 205,161 1,155 0.57 422 -11.34 0.0004
2013-08-15 2013-06-30 13F UNITED MICROELECTRONICS ADR 910873405 204,006 204,006 476 0.0004
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.