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

SecurityUMC / United Microelectronics Corporation - Depositary Receipt (Common Stock)
InstitutionRitholtz Wealth Management
Latest Disclosed Ownership83,710 shares
Latest Disclosed Value $ 751,720
Ritholtz Wealth Management reports 0.70% increase in ownership of UMC / United Microelectronics Corporation - Depositary Receipt (Common Stock)

On April 20, 2026 - Ritholtz Wealth Management filed a 13F-HR form disclosing ownership of 83,710 shares of United Microelectronics Corporation - Depositary Receipt (Common Stock) (US:UMC) valued at $751,716 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 83,130 shares of United Microelectronics Corporation - Depositary Receipt (Common Stock). This represents a change in shares of 0.70% during the quarter. The current value of the position is $1,649,087 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)
2026-04-20 2026-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 83,710 580 0.70 752 15.01 0.0130
2026-01-23 2025-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 83,130 -191 -0.23 653 3.49 0.0119
2025-10-28 2025-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 83,321 -4,342 -4.95 632 -5.82 0.0123
2025-07-28 2025-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 87,663 2,020 2.36 671 9.48 0.0148
2025-04-17 2025-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 85,643 -16,114 -15.84 612 -7.27 0.0183
2025-01-15 2024-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 101,757 -8,915 -8.06 660 -29.11 0.0194
2024-10-10 2024-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 110,672 3,414 3.18 932 -0.85 0.0281
2024-08-01 2024-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 107,258 -4,760 -4.25 940 3.64 0.0310
2024-04-24 2024-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 112,018 -1,245 -1.10 906 -5.43 0.0313
2024-01-18 2023-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 113,263 -3,167 -2.72 958 16.69 0.0372
2023-10-13 2023-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 116,430 -4,864 -4.01 822 -14.21 0.0369
2023-07-17 2023-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 121,294 -1,290 -1.05 957 -10.81 0.0431
2023-04-20 2023-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 122,584 -15,598 -11.29 1,074 18.96 0.0535
2023-01-19 2022-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 138,182 -1,549 -1.11 902 15.94 0.0504
2022-10-19 2022-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 139,731 -6,700 -4.58 778 -21.49 0.0413
2022-07-15 2022-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 146,431 -37,568 -20.42 991 -40.94 0.0624
2022-04-14 2022-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 183,999 -42,064 -18.61 1,678 -36.56 0.1134
2022-01-18 2021-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 226,063 -47,564 -17.38 2,645 -15.44 0.1644
2021-10-14 2021-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 273,627 -47,936 -14.91 3,128 2.93 0.2169
2021-07-20 2021-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 321,563 38,893 13.76 3,039 18.02 0.2189
2021-05-12 2021-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 282,670 46,521 19.70 2,575 29.33 0.2144
2021-01-19 2020-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 236,149 64,315 37.43 1,991 141.92 0.1906
2020-10-23 2020-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 171,834 64,294 59.79 823 189.79 0.0924
2020-07-15 2020-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 107,540 86,961 422.57 284 531.11 0.0366
2020-04-09 2020-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 20,579 8,193 66.15 45 36.36 0.0072
2020-01-17 2019-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 12,386 12,386 33 0.0048
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.