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The company

United Microelectronics Corporation (NEW)

UMC · NYSE

TechnologySemiconductorsIn trendAI

UMC stood above a rising 150-day average in 50 of the last 52 weekly readings, including each of the last 47 weeks. It is 4.2% above that average now. Semiconductors: 24% of its 68 stocks in an uptrend (−25 points in four weeks); Technology: 30% (−6 points in four weeks).

SEC filings

Statistics

Rotation: In trend
Weeks in an uptrend: 47 in a row
Industry in uptrend: 24% -25 in 4 wk
Insider buys, 12 months: $0
Insider sales, 12 months: $1.1B
Officials’ trades on record: 0
Institutions holding: 345 (+43)

In the rotation

Each square a week: lit when it closed above a rising 150-day average. 50 of 52 weeks.

21 Apr – 20 Oct

Semiconductors: A minority of its stocks are in an uptrend and the share has fallen sharply over four weeks. Technology: A minority of its stocks are in an uptrend and the share has been slipping.

Money in and out

1 Nov 2024 – 1 Oct 2026

Open-market buys above the line and sales below, in dollars.

Congress and officials

No member of Congress or official has disclosed a trade in it.

Insiders

Buy orders, 12 months0

Sale orders, 12 months5

Buyers · sellers0 · 3

Who	Did	Shares	Traded
Jen-Tsung LinVice President	sold	10,000at $163.00	22 Sep 2026filed 22 Sep 2026
Chitung LiuCFO & SVP	sold	400,000at $145.00	17 Sep 2026filed 17 Sep 2026
Chitung LiuCFO & SVP	sold	1,200,000at $142.33	16 Sep 2026filed 17 Sep 2026
Chitung LiuCFO & SVP	sold	1,900,000at $154.89	13 Jul 2026filed 13 Jul 2026
Che-Jen HuVice President	sold	10,000at $171.30	30 Jun 2026filed 30 Jun 2026

Lines filed since 2 January 2026, newest first; every insider’s older lines are on their own page.

Institutions

Holders345+43 on the quarter

New · exited89 · 46

Reported value$4.7B

Quarter to 30 Jun 2026, against 31 Mar 2026; newest filing 31 Aug 2026.

Manager	Shares	Change
BlackRock, Inc.added · filed 7 Aug 2026	31,544,454$858.3M	+4,048,574+14.7%
UBS Group AGadded · filed 13 Aug 2026	11,632,967$316.5M	+3,457,823+42.3%
GOLDMAN SACHS GROUP INCadded · filed 14 Aug 2026	11,109,785$302.3M	+5,234,921+89.1%
BANK OF AMERICA CORPadded · filed 14 Aug 2026	10,181,208$277.0M	+7,577,990+291.1%
VANGUARD CAPITAL MANAGEMENT LLCreduced · filed 13 Aug 2026	8,601,967$234.1M	-386,476−4.3%
MORGAN STANLEYreduced · filed 13 Aug 2026	8,285,573$225.5M	-492,330−5.6%
AQR CAPITAL MANAGEMENT LLCreduced · filed 14 Aug 2026	7,718,125$210.0M	-6,995,905−47.5%
Rafferty Asset Management, LLCadded · filed 14 Aug 2026	7,653,378$208.2M	+2,669,725+53.6%
Man Group plcreduced · filed 14 Aug 2026	5,593,427$152.2M	-135,474−2.4%
CITIGROUP INCadded · filed 3 Aug 2026	5,414,362$147.3M	+1,117,640+26.0%