NYSE · UMC

United Microelectronics Corporation

Technology · Semiconductors

$22.53

Up+$0.92 (+4.26%)

Updated Sep 17, 2026, 4:31 AM

SID Score

7.9/10

Composite research score

Smart Money

58/100

Neutral

Market cap: 19.69B
P/E ratio: 14.72
Dividend yield: 2.14%
52-week range: $6.82 – $28.96
Volume: 11.22M
Avg. volume: 7.82M

Price performance

UMC price history

1M range · 20 trading sessions · Daily adjusted prices

Last close: $22.53
Period change: +24.34%
Period low: $18.00
Period high: $22.69

Daily close

View OHLC price history

UMC OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
Sep 16, 2026	$22.49	$22.84	$22.245	$22.53	11.22M
Sep 15, 2026	$21.89	$22.055	$21.59	$21.61	8.82M
Sep 14, 2026	$22.08	$22.255	$21.8114	$21.90	16.3M
Sep 11, 2026	$22.41	$22.715	$22.32	$22.64	7.19M
Sep 10, 2026	$21.94	$22.28	$21.84	$22.12	10.13M
Sep 9, 2026	$22.02	$22.70	$21.93	$22.69	11.2M
Sep 8, 2026	$21.58	$22.20	$21.58	$21.82	11.54M
Sep 4, 2026	$20.48	$21.03	$20.33	$20.77	10.01M
Sep 3, 2026	$19.57	$19.95	$19.45	$19.86	6.07M
Sep 2, 2026	$19.54	$20.135	$19.4862	$19.97	8.76M
Sep 1, 2026	$20.43	$20.8395	$20.19	$20.47	17.94M
Aug 31, 2026	$20.00	$20.31	$19.735	$19.88	8.84M
Aug 28, 2026	$20.65	$20.78	$19.59	$19.79	19.85M
Aug 27, 2026	$18.80	$19.08	$18.68	$19.07	9.12M
Aug 26, 2026	$19.41	$19.46	$18.84	$19.03	6.79M
Aug 25, 2026	$19.50	$20.00	$19.42	$19.60	10.1M
Aug 24, 2026	$19.50	$19.50	$18.77	$19.05	14.93M
Aug 21, 2026	$18.45	$18.605	$18.275	$18.34	7.31M
Aug 20, 2026	$18.03	$18.235	$17.88	$18.00	10.51M
Aug 19, 2026	$18.80	$18.97	$17.965	$18.12	12.43M

Latest UMC news

The latest Smart Investors Daily articles mentioning UMC.

dividendsJul 10, 2026

UMC (UMC) Goes Ex-Dividend Tomorrow

priceJan 7, 2026

United Microelectronics Corporation (UMC) Surges 10.0% on Heavy Volume

priceJan 7, 2026

United Microelectronics Corporation (UMC) Surges 10.9% on Heavy Volume

Latest UMC news

The latest Smart Investors Daily articles mentioning UMC.

Stock researchResearch & News · SEC Filings

Company

Overview Forecast Earnings Dividend Financials

Market Activity

Options Insider Trades Short Interest Institutional Ownership Sentiment

Research & News

Analysis Competitors News SEC Filings SID Coverage

UMC research

SEC Filings

Recent regulatory filings and source documents.

SEC filing history

Open a filing to view the original source document.

UMC SEC filings
Filed	Form	Description	Accepted	Document
Sep 8, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Jul 13, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Jun 30, 2026	4	Form 4 - Statement of changes in beneficial ownership of securities	—	Open source
Dec 10, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Dec 4, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Nov 28, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Nov 20, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Nov 12, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Nov 6, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Oct 29, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Oct 29, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Oct 28, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Oct 27, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Oct 21, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Oct 15, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Oct 7, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Sep 22, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Sep 10, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Sep 4, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Aug 13, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Aug 12, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Aug 6, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jul 30, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jul 30, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jul 28, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jul 22, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jul 10, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jul 7, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jun 30, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jun 20, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jun 10, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jun 5, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jun 4, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
May 28, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
May 15, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
May 8, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Apr 24, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Apr 23, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Apr 23, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Apr 10, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Apr 1, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Mar 20, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Mar 11, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Feb 26, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Feb 11, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jan 21, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Jan 10, 2025	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Dec 27, 2024	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source
Dec 26, 2024	S-8	Form S-8 - Securities to be offered to employees in employee benefit plans	—	Open source
Dec 18, 2024	6-K	Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]	—	Open source

Filed

Form

Description

Accepted

Document

Sep 8, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Jul 13, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Jun 30, 2026

Form 4 - Statement of changes in beneficial ownership of securities

—

Open source

Dec 10, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Dec 4, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Nov 28, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Nov 20, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Nov 12, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Nov 6, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Oct 29, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Oct 29, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Oct 28, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Oct 27, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Oct 21, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Oct 15, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Oct 7, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Sep 22, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Sep 10, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Sep 4, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Aug 13, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Aug 12, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Aug 6, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jul 30, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jul 30, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jul 28, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jul 22, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jul 10, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jul 7, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jun 30, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jun 20, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jun 10, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jun 5, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jun 4, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

May 28, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

May 15, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

May 8, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Apr 24, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Apr 23, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Apr 23, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Apr 10, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Apr 1, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Mar 20, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Mar 11, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Feb 26, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Feb 11, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jan 21, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Jan 10, 2025

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Dec 27, 2024

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

Dec 26, 2024

S-8

Form S-8 - Securities to be offered to employees in employee benefit plans

—

Open source

Dec 18, 2024

6-K

Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]

—

Open source

UMC (UMC) Goes Ex-Dividend Tomorrow

United Microelectronics Corporation (UMC) Surges 10.0% on Heavy Volume

United Microelectronics Corporation (UMC) Surges 10.9% on Heavy Volume

Featured By

UMC (UMC) Goes Ex-Dividend Tomorrow

United Microelectronics Corporation (UMC) Surges 10.0% on Heavy Volume

United Microelectronics Corporation (UMC) Surges 10.9% on Heavy Volume