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Walleye Trading LLC

Position in UMC — United Microelectronics Corp

CIK 1388391 NEW YORK, NY

Position in UMC

as of Mar 31, 2026 · filed May 11, 2026
Position Value
$604,093
+$604,093 QoQ
Shares Held
67,271
Ownership
0.003%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2022
16 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)

Derivatives in UMC

reported options exposure · as of Mar 31, 2026
CallValue
$342,138
CallShares
38,100
PutValue
$1,430,514
PutShares
159,300

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Semiconductors

Technology · as of Mar 31, 2026

Walleye Trading LLC holds $583,778,717 across 31 Semiconductors names. UMC ranks #23 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in UMC

Export CSV
32 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $342,138 38,100
2026-03-31 $604,093 67,271
2026-03-31 $1,430,514 159,300
2025-12-31 $230,298 29,300
2025-09-30 $222,094 29,300
2025-06-30 $176,715 23,100
2025-03-31 $2,483,910 347,400
2025-03-31 $980,272 137,101
2025-03-31 $48,620 6,800
2024-09-30 $7,578 900
2024-09-30 $134,770 16,006
2024-09-30 $179,346 21,300
2024-06-30 $518,811 59,225
2024-06-30 $573,780 65,500
2024-03-31 $82,518 10,200
2024-03-31 $194,038 23,985
2024-03-31 $516,142 63,800
2023-12-31 $476,298 56,300
2023-09-30 $1,226,322 173,700
2023-09-30 $47,302 6,700
2023-06-30 $291,930 37,000
2023-06-30 $1,184,289 150,100
2023-03-31 $2,540,400 290,000
2023-03-31 $196,224 22,400
2022-12-31 $2,612 400
2022-12-31 $2,775,903 425,100
2022-09-30 $2,787,785 500,500
2022-09-30 $4,177,500 750,000
2022-06-30 $4,910,281 725,300
2022-06-30 $1,354 200
2022-03-31 $1,918,848 210,400
2022-03-31 $1,435,488 157,400