United Microelectronics Corporation - Depositary Receipt (Common Stock)
DE ˙ DB ˙ US9108734057
20,00 € ↑1,40 (7,53%)
2026-06-01
AKTIENPREIS
SecurityDE:UMCB / United Microelectronics Corporation - Depositary Receipt (Common Stock)
InstitutionUBS Group AG
Latest Disclosed Ownership8,175,144 shares
Latest Disclosed Value $ 73,412,794
UBS Group AG ownership in UMCB / United Microelectronics Corporation - Depositary Receipt (Common Stock)

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 8,175,144 shares of United Microelectronics Corporation - Depositary Receipt (Common Stock) (DE:UMCB) valued at $60,496,066 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 4,570,447 shares of United Microelectronics Corporation - Depositary Receipt (Common Stock). This represents a change in shares of 78.87% during the quarter. The current value of the position is $163,502,880 USD.

UBS Group AG has a history of taking positions in derivatives of the underlying security (UMCB) in the form of stock options. The firm currently holds call options representing 200,000 of underlying shares valued at $1,796,000 USD and put options representing 139,500 of underlying shares valued at $1,252,710 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:UMCB / United Microelectronics Corporation - Depositary Receipt (Common Stock) Historical Put/Call Ratio
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)
2026-05-05 2026-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 8,175,144 3,604,697 78.87 73,413 104.36 0.0021
2026-01-29 2025-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 4,570,447 808,412 21.49 35,924 25.97 0.0058
2025-11-13 2025-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 3,762,035 -13,126,786 -77.72 28,516 -77.93 0.0045
2025-08-14 2025-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 16,888,821 1,442,489 9.34 129,199 16.98 0.0224
2025-05-13 2025-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 15,446,332 5,862,283 61.17 110,441 77.56 0.0203
2025-02-14 2024-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 9,584,049 2,301,844 31.61 62,200 1.44 0.0115
2024-11-14 2024-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 7,282,205 998,147 15.88 61,316 11.39 0.0134
2024-08-14 2024-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 6,284,058 -2,084,332 -24.91 55,048 -18.69 0.0136
2024-05-13 2024-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 8,368,390 1,616,944 23.95 67,700 18.53 0.0169
2024-02-09 2023-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 6,751,446 -752,829 -10.03 57,117 7.81 0.0171
2023-11-09 2023-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 7,504,275 1,990,246 36.09 52,980 21.78 0.0183
2023-08-11 2023-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 5,514,029 -1,773,266 -24.33 43,506 -31.85 0.0147
2023-05-12 2023-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 7,287,295 1,275,069 21.21 63,837 62.60 0.0233
2023-02-08 2022-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 6,012,226 -568,398 -8.64 39,260 7.11 0.0147
2022-11-10 2022-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 6,580,624 -1,792,521 -21.41 36,654 -35.34 0.0161
2022-08-10 2022-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 8,373,145 485,209 6.15 56,686 -21.20 0.0233
2022-05-16 2022-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 7,887,936 857,536 12.20 71,937 -12.54 0.0240
2022-02-14 2021-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 7,030,400 -5,454,706 -43.69 82,255 -42.36 0.0236
2021-11-15 2021-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 12,485,106 10,943,422 709.84 142,705 879.51 0.0449
2021-08-13 2021-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 1,541,684 869,477 129.35 14,569 137.86 0.0047
2021-05-12 2021-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 672,207 378,927 129.20 6,125 147.67 0.0020
2021-02-11 2020-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 293,280 88,506 43.22 2,473 152.09 0.0008
2020-11-12 2020-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 204,774 -4,789 -2.29 981 77.08 0.0004
2020-07-31 2020-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 209,563 5,218 2.55 554 24.77 0.0002
2020-05-01 2020-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 204,345 -453,126 -68.92 444 -74.80 0.0002
2020-02-14 2019-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 657,471 15,566 2.42 1,762 31.30 0.0006
2019-11-14 2019-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 641,905 524,036 444.59 1,342 414.18 0.0005
2019-08-14 2019-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 117,869 -262,290 -68.99 261 -63.50 0.0001
2019-05-14 2019-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 380,159 -3,853 -1.00 715 4.08 0.0003
2019-02-14 2018-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 384,012 1,516 0.40 687 -30.40 0.0003
2018-11-14 2018-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 382,496 250,359 189.47 987 165.32 0.0004
2018-08-14 2018-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 132,137 13,170 11.07 372 20.78 0.0002
2018-05-15 2018-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 118,967 38,088 47.09 308 59.59 0.0001
2018-02-14 2017-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 80,879 -28,656 -26.16 193 -29.56 0.0001
2017-11-14 2017-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 109,535 2,740 2.57 274 5.38 0.0001
2017-11-14 2017-06-30 13F/A-1 UNITED MICROELECTRONICS SPON ADR NEW 910873405 106,795 -7,285 -6.39 260 18.18 0.0001
2017-08-14 2017-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 106,795 -7,285 260
2017-11-14 2017-03-31 13F/A-1 UNITED MICROELECTRONICS SPON ADR NEW 910873405 114,080 32,884 40.50 220 54.93 0.0001
2017-05-12 2017-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 114,080 32,884 220
2017-02-14 2016-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 81,196 2,581 3.28 142 -2.07 0.0001
2016-11-14 2016-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 78,615 28,528 56.96 145 45.00 0.0001
2016-08-12 2016-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 50,087 -1,327 -2.58 100 -6.54 0.0001
2016-05-12 2016-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 51,414 -30,581 -37.30 107 -30.52 0.0001
2016-02-16 2015-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 81,995 -416,775 -83.56 154 -80.94 0.0001
2015-11-13 2015-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 498,770 -190,510 -27.64 808 -42.82 0.0006
2015-08-14 2015-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 689,280 -511,988 -42.62 1,413 -51.79 0.0009
2015-05-14 2015-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 1,201,268 12,241 1.03 2,931 8.60 0.0020
2015-02-17 2014-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW 910873405 1,189,027 1,189,027 2,699 0.0019
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW Call 200,000 1,796 n/a n/a n/a
2026-01-29 2025-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-13 2025-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW Call 50,000 0.00 379 -0.79 n/a n/a n/a
2025-08-14 2025-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW Call 50,000 382 n/a n/a n/a
2025-02-14 2024-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW Call 450,000 0.00 3,789 -3.88 n/a n/a n/a
2024-08-14 2024-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW Call 450,000 0.00 3,942 8.30 n/a n/a n/a
2024-05-13 2024-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW Call 450,000 3,640 n/a n/a n/a
2023-08-11 2023-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-12 2023-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW Call 750,000 0.00 6,570 34.16 n/a n/a n/a
2023-02-08 2022-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW Call 750,000 -25.00 4,898 -12.08 n/a n/a n/a
2022-11-10 2022-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW Call 1,000,000 5,570 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW Put 139,500 -64.64 1,253 -59.61 n/a n/a n/a
2026-01-29 2025-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW Put 394,500 16.00 3,101 20.29 n/a n/a n/a
2025-11-13 2025-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW Put 340,100 2,578 n/a n/a n/a
2023-05-12 2023-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-02-08 2022-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW Put 1,250,000 0.00 8,162 17.22 n/a n/a n/a
2022-11-10 2022-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW Put 1,250,000 51.13 6,963 24.36 n/a n/a n/a
2022-08-10 2022-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW Put 827,100 5,599 n/a n/a n/a
2022-05-16 2022-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F UNITED MICROELECTRONICS SPON ADR NEW Put 200,000 -55.56 2,340 -54.51 n/a n/a n/a
2021-11-15 2021-09-30 13F UNITED MICROELECTRONICS SPON ADR NEW Put 450,000 -40.00 5,144 -27.43 n/a n/a n/a
2021-08-13 2021-06-30 13F UNITED MICROELECTRONICS SPON ADR NEW Put 750,000 36.36 7,088 41.45 n/a n/a n/a
2021-05-12 2021-03-31 13F UNITED MICROELECTRONICS SPON ADR NEW Put 550,000 5,011 n/a n/a n/a
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.