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UMC · United Microelectronics Corp

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TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475

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UMC

Name: UNITED MICROELECTRONICS CORP (UMC) insider trading and ownership data
Creator: WaveMan
License: https://wave-man.com/terms

UNITED MICROELECTRONICS CORP

SEMICONDUCTORS & ELECTRONICS · SEMICONDUCTORS & RELATED DEVICES · CIK 0001033767

SEC FILINGS☆ WATCH

INSIDER NET · 180D

-$296.0M

open-market buys minus sells, Form 4 codes P and S

INSIDER BUYERS · 180D

CONGRESS BUYERS · 1Y

FUNDS ADDED · QTR

219

13F, latest reported quarter

REVENUE GROWTH

XBRL, annual

NET MARGIN

SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST

INSIDERS

net -$296.0M over 180 days

-$296.0M over 90 days

below 95% of Semiconductors & Electronics

CONGRESS

no member of Congress has reported trading it

FUNDS

219 funds added or opened last quarter

more than 66% of Semiconductors & Electronics

REVENUE

no revenue reported in any filing

MARGIN

no margin: this company reports no revenue to divide by

BUYBACKS

no share repurchases reported

SHORT

no short interest reported

THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET

219 funds added or opened positions in the latest 13F quarter, of 364 holders.

The year, with the filings on it

Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail

TOTAL 12M RETURN +219.3%

+219.3%12M

INSIDER SELL

INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY

Live price

Daily candles from TradingView, on their licence — no filings are marked on this one

WHY THIS NAME IS ON THE DESK

The complete filing record, in one place.

The record shows a net $296.0M sold by insiders over 180 days, 219 funds added last quarter. Every figure is a federal filing, dated the day it became public.

Backtest this pattern Open the screener

Same sector, ranked by filing activity

Sector from the SEC's own SIC classification

NVDA CRDO VICR MPWR VPLM ALAB PI MTSI MU AIP AVGO MSI

Insider transactions

Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, UNITED MICROELECTRONICS CORP insiders sold a net $296.0M of stock across 2 Form 4 purchases and sales, with 0 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-06.

INSIDER

FILED

VALUE

Liu Chitung

CFO & SVP

SELL

2026-07-13

1,900,000.0

$294.3M

HU CHE-JEN

Vice President

SELL

2026-06-30

10,000.0

$1.7M

2 TRANSACTIONS ON RECORD · THIN RECORD, READ IT AS SUCH

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Institutional holders

13F · holdings as of the latest quarter funds have reported

BlackRock, Inc.

31,544,454.0 sh

$858.3M

UBS Group AG

11,632,967.0 sh

$316.5M

GOLDMAN SACHS GROUP INC

11,109,785.0 sh

$302.3M

BANK OF AMERICA CORP /DE/

10,181,208.0 sh

$277.0M

VANGUARD CAPITAL MANAGEMENT LLC

8,601,967.0 sh

$234.1M

SCHEDULE 13D/G

No 5%+ ownership filings

Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.

FORM 144

No planned-sale notices

No insider has notified an intent to sell. This is the panel to watch after a run-up.

Fund concentration

N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show

PROFUND VP ASIA 30

$665.6K POSITION · AS OF 2026-03-31

3.7%

Yieldmax Semiconductor Portfolio Option Income ETF

$19.1M POSITION · AS OF 2026-04-30

3.1%

Yieldmax Target 12 Semiconductor Option Income ETF

$1.5M POSITION · AS OF 2026-04-30

3.0%

SGI Global Equity Fund

$2.0M POSITION · AS OF 2026-02-28

2.4%

Eventide International ETF

$294.3K POSITION · AS OF 2026-04-30

1.8%

ULTRAEMERGING MARKETS PROFUND

$183.7K POSITION · AS OF 2026-04-30

1.3%

SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK

Fundamentals

Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all

	2024-12	2023-12	2022-12	2021-12
GROSS PROFIT	$75.7B	$77.7B	$125.8B	$72.0B
NET INCOME	$48.7B	$60.1B	$90.3B	$50.6B

SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-06 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE