GROUP ONE TRADING LLC

Position in VICR — Vicor Corp

CIK 932540 CHICAGO, IL

Position in VICR

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

Position Value

$486,542

+$6,604 QoQ

Shares Held

3,022

-31.0% QoQ

Ownership

0.007%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

11 quarters on record

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

Technology · as of Mar 31, 2026

GROUP ONE TRADING LLC holds $24,957,871 across 16 Electronic Components names. VICR ranks #6 (1.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	GLW	Corning Inc /Ny	69,419	$9,438,901
2	CLS	Celestica Inc	31,337	$8,827,006
3	OUST	Ouster, Inc.	131,922	$2,423,407
4	TTMI	Ttm Technologies Inc	17,270	$1,682,443
5	LPTH	Lightpath Technologies Inc	128,623	$1,290,088
6	VICR	Vicor Corp This page	3,022	$486,542
7	ALNT	Allient Inc	3,938	$232,696
8	KOPN	Kopin Corp	99,776	$224,496

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$486,542	3,022	-31.0%	Shares	Sole	2026-05-13
2025-12-31	$479,938	4,379	-19.0%	Shares	Sole	2026-02-12
2025-09-30	$268,885	5,408	-16.2%	Shares	Sole	2025-11-12
2025-06-30	$292,617	6,451	+24.9%	Shares	Sole	2025-08-14
2025-03-31	$241,525	5,163	+118.8%	Shares	Sole	2025-05-14
2024-12-31	$114,035	2,360	+269.3%	Shares	Sole	2025-05-14
2024-06-30	$21,189	639	-86.7%	Shares	Sole	2024-08-14
2020-12-31	$441,641	4,789	-71.0%	Shares	Sole	2021-02-10
2020-09-30	$1,285,187	16,534	+147.7%	Shares	Sole	2020-11-12
2020-06-30	$480,194	6,674	-87.9%	Shares	Sole	2020-08-13
2020-03-31	$2,464,398	55,330	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.