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ACADIAN ASSET MANAGEMENT LLC

Position in UMC — United Microelectronics Corp

CIK 916542 Boston, MA

Position in UMC

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$156,545,796
+$83,590,489 QoQ
Shares Held
5,753,245
-29.2% QoQ
Ownership
0.229%
of shares outstanding
% of Portfolio
0.19%
of 13F equity value
Holder Rank
#9
of 363 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in UMC Over Time

Shares Held

Position Value (USD)

Position in Semiconductors

Technology · as of Jun 30, 2026

ACADIAN ASSET MANAGEMENT LLC holds $9,627,615,709 across 48 Semiconductors names. UMC ranks #10 (1.6% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in UMC

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $156,545,796 5,753,245
2026-03-31 $72,955,307 8,124,199
2025-12-31 $18,059,025 2,297,586
2025-09-30 $208,609 27,521
2025-06-30 $2,409,696 314,993
2025-03-31 $1,161,102 162,392
2024-12-31 $9,628,291 1,483,558
2024-09-30 $61,685,416 7,326,059
2024-06-30 $3,852,341 439,765
2024-03-31 $1,659,736 205,159
2023-12-31 $144,039 17,026
2023-09-30 $434,641 61,564
2023-06-30 $3,350,007 424,589
2023-03-31 $4,920,894 561,746
2022-12-31 $592,852 90,789
2022-09-30 $1,462,030 262,483
2022-06-30 $4,744,524 700,816
2022-03-31 $9,485,201 1,040,044
2021-12-31 $23,323,037 1,993,422
2021-09-30 $34,429,137 3,012,173
2021-06-30 $26,128,909 2,764,964
2021-03-31 $52,659,680 5,780,426
2020-12-31 $48,580,302 5,762,788
2020-09-30 $36,622,059 7,645,524
2020-06-30 $21,235,286 8,043,669
2020-03-31 $17,833,433 8,218,172