What is CUSIP 910873405?

CUSIP 910873405 is the security identifier used in SEC filing datasets for UMC - UNITED MICROELECTRONICS CORP - SPON ADR NEW.

Who owns UMC - UNITED MICROELECTRONICS CORP - SPON ADR NEW based on 13F filings?

365 institutions reported positions in UMC - UNITED MICROELECTRONICS CORP - SPON ADR NEW as of Q2 2026. Open the latest holders period and ownership history tables on this page for position-level details.

Security Snapshot

UNITED MICROELECTRONICS CORP - SPON ADR NEW (UMC) Institutional Ownership

CUSIP: 910873405

13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026

13F reference period

Q2 2026

Institutions Reporting

365

Shares (Excl. Options)

180.04M

Full value: 180,038,191 · shares · 30 Jun 2026

Price

$27.21

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.

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Security type / class: Equity / SPON ADR NEW
Symbol: UMC on NYSE
All holders as of 30 Jun 2026: Q2 2026
Total 13F shares: 180,038,191
Total 13F value: $4,894,427,203
Portfolio coverage rank: 0%
Share change: +6,007,795
Value change: +$331,264,415
Number of holders: 365
SEC-reported price per share: $24.49

13F Shares, Excluding Options vs Price

13F Value, Excluding Options

Total Investors

Filing notes and source

Key facts

UMC - UNITED MICROELECTRONICS CORP - SPON ADR NEW is tracked under CUSIP 910873405.
365 institutions reported positions in Q2 2026.
Schedule 13D/13G significant owner rows are not currently available.

Change

Holder count moved from 317 to 365 between Q1 2026 and Q2 2026.
SEC-reported value moved from
$1.57B
Full value: $1,565,269,729 · USD · 31 Mar 2026
to
$4.89B
Full value: $4,894,427,203 · USD · 30 Jun 2026
.

Research use

You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 365 institutions filings for Q2 2026.

Open SEC evidence

Security key

910873405

13F reference period

Q2 2026

13F holders

365

13D/G owners

CIK / CUSIP context first

Open Q2 2026 holders UMC full holder history UNITED MICROELECTRONICS CORP SEC filings UNITED MICROELECTRONICS CORP company facts UNITED MICROELECTRONICS CORP insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

Recent Quarterly Holder Reports

Open recent reporting periods for CUSIP 910873405:

Q3 2026 (93 holders) Q2 2026 (365 holders) Q1 2026 (317 holders) Q4 2025 (270 holders) Q3 2025 (237 holders) Q2 2025 (235 holders) Q1 2025 (229 holders) Q4 2024 (249 holders) Q3 2024 (262 holders) Q2 2024 (233 holders)

As of 30 Jun 2026, 365 institutional investors reported holding

180.04M

Full value: 180,038,191 · shares · 30 Jun 2026

shares of UNITED MICROELECTRONICS CORP - SPON ADR NEW (UMC).

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods

Headline period

Q2 2026

Rows shown

1-25 of 51

Period	13F Shares, Excl. Options	Value, Excl. Options	Value Change	Puts Notional Value	Calls Notional Value	Price (Median)	Investors
2026 Q3	4,080,750	$99,143,977	-$3,578,493			$24.49	93
2026 Q2	180,038,191	$4,894,427,203	+$331,264,415	$103,980,294	$278,401,836	$27.21	365
2026 Q1	174,362,855	$1,565,269,729	+$228,762,607	$10,679,016	$35,010,326	$8.98	317
2025 Q4	151,130,993	$1,189,120,083	+$144,322,801	$12,539,844	$3,535,428	$7.86	270
2025 Q3	132,277,745	$1,002,548,491	-$143,097,417	$12,099,954	$2,119,368	$7.58	237
2025 Q2	150,838,748	$1,155,499,660	-$26,323,231	$8,451,720	$754,290	$7.65	235
2025 Q1	154,658,027	$1,103,079,853	-$32,406,916	$10,230,935	$4,944,225	$7.15	229
2024 Q4	160,149,783	$1,039,539,971	-$5,775,134	$2,718,661	$1,770,099	$6.49	249
2024 Q3	160,236,277	$1,350,034,251	+$238,293,112	$4,127,484	$8,677,746	$8.42	262
2024 Q2	131,840,096	$1,154,668,970	+$15,148,416	$6,078,564	$7,480,164	$8.76	233
2024 Q1	131,479,548	$1,063,577,118	+$78,328,559	$12,334,014	$5,832,081	$8.09	236
2023 Q4	121,520,064	$1,027,830,340	-$62,162,098	$15,754,212	$37,612,314	$8.46	241
2023 Q3	128,884,727	$910,095,476	+$14,347,414	$5,570,340	$30,701,116	$7.06	208
2023 Q2	126,453,631	$999,740,346	-$42,728,335	$8,291,802	$33,264,938	$7.89	214
2023 Q1	130,494,762	$1,143,023,762	-$2,481,447	$130,557,604	$52,140,648	$8.76	210
2022 Q4	132,836,115	$871,559,507	+$9,641,298	$100,778,515	$50,122,975	$6.53	213
2022 Q3	132,972,665	$741,628,213	+$53,901,043	$61,257,000	$47,873,000	$5.57	210
2022 Q2	123,644,088	$838,892,350	-$10,303,844	$67,303,710	$16,206,250	$6.77	206
2022 Q1	127,562,615	$1,163,921,294	+$126,781,234	$70,548,000	$36,890,000	$9.12	233
2021 Q4	112,622,165	$1,317,445,109	-$56,820,572	$140,488,000	$22,333,000	$11.70	257
2021 Q3	117,553,607	$1,343,032,240	+$311,153,836	$38,976,000	$16,440,000	$11.43	218
2021 Q2	88,961,939	$841,497,696	-$3,868,102	$41,005,000	$29,900,000	$9.45	195
2021 Q1	89,256,667	$812,680,275	+$71,998,679	$25,611,000	$25,510,000	$9.11	194
2020 Q4	88,940,533	$750,178,918	-$80,778,541	$6,591,000	$9,851,000	$8.43	182
2020 Q3	101,832,507	$488,730,114	-$58,934,530	$378,000	$719,000	$4.79	135