ACADIAN ASSET MANAGEMENT LLC

Position in UMC — United Microelectronics Corp

CIK 916542 Boston, MA

Back to UMC Full portfolio

Position in UMC

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$72,955,307

+$54,896,282 QoQ

Shares Held

8,124,199

+253.6% QoQ

Ownership

0.324%

of shares outstanding

% of Portfolio

0.11%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in UMC Over Time

Shares Held

Position Value (USD)

Position in Semiconductors

Technology · as of Mar 31, 2026

ACADIAN ASSET MANAGEMENT LLC holds $5,981,656,122 across 43 Semiconductors names. UMC ranks #11 (1.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	NVDA	Nvidia Corp	18,653,828	$3,253,227,603
2	AVGO	Broadcom Inc.	2,733,793	$846,136,271
3	MU	Micron Technology Inc	1,516,435	$512,312,400
4	AMD	Advanced Micro Devices Inc	876,643	$178,335,485
5	ASX	ASE Technology Holding Co., Ltd.	7,370,434	$159,791,009
6	QCOM	Qualcomm Inc/De	1,163,818	$149,876,482
7	SIMO	Silicon Motion Technology CORP	1,293,710	$145,270,695
8	CRUS	Cirrus Logic, Inc.	834,284	$120,654,152

All Filings in UMC

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$72,955,307	8,124,199	+253.6%	Shares	Defined	2026-05-13
2025-12-31	$18,059,025	2,297,586	+8248.5%	Shares	Defined	2026-02-10
2025-09-30	$208,609	27,521	-91.3%	Shares	Defined	2025-11-13
2025-06-30	$2,409,696	314,993	+94.0%	Shares	Defined	2025-08-07
2025-03-31	$1,161,102	162,392	-89.1%	Shares	Defined	2025-05-21
2024-12-31	$9,628,291	1,483,558	-79.7%	Shares	Defined	2025-02-11
2024-09-30	$61,685,416	7,326,059	+1565.9%	Shares	Defined	2024-11-12
2024-06-30	$3,852,341	439,765	+114.4%	Shares	Defined	2024-08-06
2024-03-31	$1,659,736	205,159	+1105.0%	Shares	Defined	2024-05-10
2023-12-31	$144,039	17,026	-72.3%	Shares	Defined	2024-02-13
2023-09-30	$434,641	61,564	-85.5%	Shares	Defined	2023-11-13
2023-06-30	$3,350,007	424,589	-24.4%	Shares	Defined	2023-08-07
2023-03-31	$4,920,894	561,746	+518.7%	Shares	Defined	2023-05-11
2022-12-31	$592,852	90,789	-65.4%	Shares	Defined	2023-02-14
2022-09-30	$1,462,030	262,483	-62.5%	Shares	Defined	2022-11-14
2022-06-30	$4,744,524	700,816	-32.6%	Shares	Defined	2022-08-09
2022-03-31	$9,485,201	1,040,044	-47.8%	Shares	Defined	2022-05-12
2021-12-31	$23,323,037	1,993,422	-33.8%	Shares	Defined	2022-02-10
2021-09-30	$34,429,137	3,012,173	+8.9%	Shares	Defined	2021-11-12
2021-06-30	$26,128,909	2,764,964	-52.2%	Shares	Defined	2021-08-11
2021-03-31	$52,659,680	5,780,426	+0.3%	Shares	Defined	2021-05-11
2020-12-31	$48,580,302	5,762,788	-24.6%	Shares	Defined	2021-02-11
2020-09-30	$36,622,059	7,645,524	-4.9%	Shares	Defined	2020-11-09
2020-06-30	$21,235,286	8,043,669	-2.1%	Shares	Defined	2020-08-12
2020-03-31	$17,833,433	8,218,172	—	Shares	Defined	2020-05-11
No filing history on record for this holder in this stock.