MILLENNIUM MANAGEMENT LLC

Position in UMC — United Microelectronics Corp

CIK 1273087 NEW YORK, NY

Back to UMC Full portfolio

Position in UMC

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$15,895,758

+$10,429,922 QoQ

Shares Held

1,770,129

+154.5% QoQ

Ownership

0.071%

of shares outstanding

% of Portfolio

0.01%

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)

Derivatives in UMC

reported options exposure · as of Mar 31, 2026

CallValue

CallShares

PutValue

$753,422

PutShares

83,900

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

MILLENNIUM MANAGEMENT LLC holds $6,412,605,378 across 54 Semiconductors names. UMC ranks #29 (0.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	NVDA	Nvidia Corp	10,585,647	$1,846,136,836
2	TSM	Taiwan Semiconductor Manufacturing Co Ltd	2,232,887	$754,604,161
3	AVGO	Broadcom Inc.	2,151,004	$665,757,248
4	MRVL	Marvell Technology, Inc.	6,112,977	$605,490,371
5	MU	Micron Technology Inc	1,605,077	$542,259,213
6	AMD	Advanced Micro Devices Inc	1,443,561	$293,663,614
7	QRVO	Qorvo, Inc.	2,224,288	$172,159,891
8	STM	STMicroelectronics N.V.	4,471,458	$154,488,873

All Filings in UMC

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47 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$15,895,758	1,770,129	+2009.8%	Shares	Sole	2026-05-15
2026-03-31	$753,422	83,900	+125.5%	Put	Sole	2026-05-15
2025-12-31	$292,392	37,200	-94.7%	Call	Sole	2026-02-17
2025-12-31	$5,465,836	695,399	+723.9%	Shares	Sole	2026-02-17
2025-12-31	$663,384	84,400	-72.9%	Put	Sole	2026-02-17
2025-09-30	$2,364,285	311,911	+269.6%	Shares	Sole	2025-11-14
2025-09-30	$639,752	84,400	+43.6%	Put	Sole	2025-11-14
2025-06-30	$449,667	58,780	+193.9%	Shares	Sole	2025-08-14
2025-03-31	$143,000	20,000	-99.7%	Call	Sole	2025-05-15
2025-03-31	$56,438,868	7,893,548	-44.9%	Shares	Sole	2025-05-15
2024-12-31	$92,997,760	14,329,393	+3091.8%	Shares	Sole	2025-02-14
2024-09-30	$3,780,133	448,947	-40.5%	Shares	Sole	2024-11-14
2024-06-30	$6,614,027	755,026	-68.0%	Shares	Sole	2024-08-14
2024-03-31	$19,070,832	2,357,334	+15615.6%	Shares	Sole	2024-05-15
2023-12-31	$126,900	15,000	-99.5%	Put	Sole	2024-02-14
2023-12-31	$23,118,642	2,732,700	+165.7%	Call	Sole	2024-02-14
2023-12-31	$8,702,108	1,028,618	+676.4%	Shares	Sole	2024-02-14
2023-09-30	$935,301	132,479	-95.1%	Shares	Sole	2023-11-14
2023-09-30	$18,938,450	2,682,500	+17783.3%	Call	Sole	2023-11-14
2023-09-30	$105,900	15,000	0.0%	Put	Sole	2023-11-14
2023-06-30	$118,350	15,000	-99.4%	Put	Sole	2023-08-14
2023-06-30	$21,164,925	2,682,500	+56.4%	Call	Sole	2023-08-14
2023-03-31	$15,023,400	1,715,000	-35.3%	Put	Sole	2023-05-15
2023-03-31	$23,235,900	2,652,500	+629.5%	Call	Sole	2023-05-15
2023-03-31	$3,185,144	363,601	-85.9%	Shares	Sole	2023-05-15
2022-12-31	$16,896,375	2,587,500	+52.2%	Call	Sole	2023-02-14
2022-12-31	$11,101,000	1,700,000	+1104.9%	Put	Sole	2023-02-14
2022-12-31	$921,330	141,092	-94.2%	Shares	Sole	2023-02-14
2022-09-30	$13,638,167	2,448,504	+2.0%	Shares	Sole	2022-11-14
2022-09-30	$13,368,000	2,400,000	+9.1%	Put	Sole	2022-11-14
2022-09-30	$12,254,000	2,200,000	+214.3%	Call	Sole	2022-11-14
2022-06-30	$4,739,000	700,000	-65.0%	Put	Sole	2022-08-15
2022-06-30	$13,537,380	1,999,613	+185.7%	Shares	Sole	2022-08-15
2022-06-30	$4,739,000	700,000	-67.0%	Call	Sole	2022-08-15
2022-03-31	$19,336,816	2,120,265	+173.6%	Shares	Sole	2022-05-16
2022-03-31	$7,068,000	775,000	+10.7%	Put	Sole	2022-05-16
2022-03-31	$6,384,000	700,000	+5.8%	Call	Sole	2022-05-16
2021-12-31	$7,737,467	661,322	-78.0%	Shares	Sole	2022-02-14
2021-12-31	$35,100,000	3,000,000	+160.1%	Put	Sole	2022-02-14
2021-09-30	$13,182,710	1,153,343	+130.7%	Shares	Sole	2021-11-15
2021-06-30	$4,725,000	500,000	+40.2%	Call	Sole	2021-08-16
2021-03-31	$3,248,006	356,532	-28.7%	Shares	Sole	2021-05-17
2021-03-31	$4,555,000	500,000	+1533.8%	Call	Sole	2021-05-17
2020-12-31	$257,991	30,604	-96.6%	Shares	Sole	2021-02-16
2020-09-30	$4,340,750	906,211	+581.6%	Shares	Sole	2020-11-16
2020-06-30	$350,974	132,945	+230.6%	Shares	Sole	2020-08-14
2020-03-31	$87,270	40,217	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.