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

SecurityUMC / United Microelectronics Corporation - Depositary Receipt (Common Stock)
InstitutionCAPROCK Group, Inc.
Latest Disclosed Ownership112,644 shares
Latest Disclosed Value $ 1,011,543
CAPROCK Group, Inc. reports 8.19% increase in ownership of UMC / United Microelectronics Corporation - Depositary Receipt (Common Stock)

On May 11, 2026 - CAPROCK Group, Inc. filed a 13F-HR form disclosing ownership of 112,644 shares of United Microelectronics Corporation - Depositary Receipt (Common Stock) (US:UMC) valued at $1,011,543 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 104,116 shares of United Microelectronics Corporation - Depositary Receipt (Common Stock). This represents a change in shares of 8.19% during the quarter. The current value of the position is $2,412,834 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)
2026-05-11 2026-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 112,644 8,528 8.19 1,012 23.59 0.0246
2026-01-28 2025-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 104,116 -2,269 -2.13 818 16.86 0.0173
2025-11-06 2025-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 106,385 -9,384 -8.11 700 -15.36 0.0172
2025-05-15 2025-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 115,769 -13,264 -10.28 828 -1.19 0.0252
2025-01-23 2024-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 129,033 3,013 2.39 837 -21.11 0.0274
2024-11-07 2024-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 126,020 -184 -0.15 1,061 -3.98 0.0386
2024-08-06 2024-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 126,204 57,762 84.40 1,106 99.82 0.0450
2024-04-29 2024-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 68,442 8,119 13.46 554 8.43 0.0317
2024-01-18 2023-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 60,323 -19,855 -24.76 510 -9.89 0.0326
2023-10-18 2023-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 80,178 -2,094 -2.55 566 -18.68 0.0428
2023-08-10 2023-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 82,272 7,867 10.57 697 6.91 0.0511
2023-04-26 2023-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 74,405 4,220 6.01 652 42.14 0.0505
2023-01-23 2022-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 70,185 33,921 93.54 458 126.73 0.0427
2022-11-07 2022-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 36,264 5,876 19.34 202 -8.60 0.0195
2022-07-26 2022-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 30,388 5,959 24.39 221 -0.90 0.0217
2022-04-12 2022-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 24,429 215 0.89 223 -21.20 0.0210
2022-01-18 2021-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 24,214 -624 -2.51 283 -0.35 0.0233
2021-10-07 2021-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 24,838 24,838 284 0.0254
2020-10-29 2020-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 0 -17,945 -100.00 0 -100.00
2020-08-05 2020-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 17,945 6,273 53.74 47 88.00 0.0071
2020-04-28 2020-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 11,672 1,306 12.60 25 -10.71 0.0047
2020-02-04 2019-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 10,366 10,366 28 0.0050
2019-10-31 2019-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 0 -13,870 -100.00 0 -100.00
2019-07-23 2019-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 13,870 13,870 31 0.0061
2019-04-12 2019-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 0 -23,789 -100.00 0 -100.00
2019-01-29 2018-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 23,789 23,789 43 0.0099
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.