GROUP ONE TRADING LLC

Position in ALGM — Allegro Microsystems, Inc.

CIK 932540 CHICAGO, IL

Position in ALGM

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$241,442

-$55,381 QoQ

Shares Held

3,468

-63.2% QoQ

Ownership

0.002%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#253

of 370 holders

Holding Since

Mar 2021

15 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $338,644,518 across 29 Semiconductors names. ALGM ranks #19 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TSM	Taiwan Semiconductor Manufacturing Co Ltd	193,229	$92,280,373
2	MU	Micron Technology Inc	72,926	$84,177,752
3	MRVL	Marvell Technology, Inc.	186,955	$55,692,024
4	NVDA	Nvidia Corp	109,278	$21,865,435
5	VSH	Vishay Intertechnology Inc	405,758	$21,821,665
6	INTC	Intel Corp	105,240	$14,694,661
7	MXL	Maxlinear, Inc	104,369	$13,362,363
8	AVGO	Broadcom Inc.	16,835	$6,359,421

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$241,442	3,468	-63.2%	Shares	Sole	2026-08-14
2026-03-31	$296,823	9,414	+31.2%	Shares	Sole	2026-05-13
2025-09-30	$209,568	7,177	-86.4%	Shares	Sole	2025-11-12
2025-06-30	$1,807,317	52,861	+19.4%	Shares	Sole	2025-08-14
2025-03-31	$1,112,882	44,285	+26.9%	Shares	Sole	2025-05-14
2024-12-31	$762,914	34,900	+780.0%	Shares	Sole	2025-05-14
2024-06-30	$111,999	3,966	+235.5%	Shares	Sole	2024-08-14
2024-03-31	$31,866	1,182	-66.8%	Shares	Sole	2024-05-10
2023-12-31	$107,761	3,560	-76.1%	Shares	Sole	2024-02-14
2023-03-31	$714,283	14,884	+1760.5%	Shares	Sole	2023-05-12
2022-03-31	$22,720	800	0.0%	Shares	Sole	2022-05-12
2021-12-31	$28,944	800	-57.9%	Shares	Sole	2022-02-11
2021-09-30	$60,724	1,900	+46.2%	Shares	Sole	2021-11-12
2021-06-30	$36,010	1,300	-26.1%	Shares	Sole	2021-08-10
2021-03-31	$44,590	1,759	—	Shares	Sole	2021-05-12
No filing history on record for this holder in this stock.