FOX RUN MANAGEMENT, L.L.C.

Position in MGNI — Magnite, Inc.

CIK 1533457 GREENWICH, CT

Position in MGNI

as of Jun 30, 2026 · filed Aug 4, 2026 Compact

Position Value

$506,120

-$540,543 QoQ

Shares Held

26,666

-69.7% QoQ

Ownership

0.019%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

#167

of 306 holders

Holding Since

Jun 2022

10 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Communication Services · as of Jun 30, 2026

FOX RUN MANAGEMENT, L.L.C. holds $1,509,076 across 5 Advertising Agencies names. MGNI ranks #1 (33.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MGNI	Magnite, Inc. This page	26,666	$506,120
2	TTD	Trade Desk, Inc.	18,071	$326,723
3	NEXN	Nexxen International Ltd.	31,396	$283,505
4	QNST	Quinstreet, Inc	15,126	$221,595
5	WPP	WPP plc	11,048	$171,133

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$506,120	26,666	-69.7%	Shares	Sole	2026-08-04
2026-03-31	$1,046,663	88,103	+38.2%	Shares	Sole	2026-05-12
2025-09-30	$1,388,714	63,761	-17.4%	Shares	Sole	2025-11-12
2025-03-31	$881,114	77,223	+221.4%	Shares	Sole	2025-05-13
2024-09-30	$332,801	24,029	-25.3%	Shares	Sole	2024-11-12
2024-03-31	$345,720	32,160	+61.5%	Shares	Sole	2024-05-13
2023-03-31	$184,403	19,914	+97.8%	Shares	Sole	2023-05-12
2022-12-31	$106,641	10,070	-57.0%	Shares	Sole	2023-02-07
2022-09-30	$153,724	23,398	-4.2%	Shares	Sole	2022-11-07
2022-06-30	$216,920	24,428	—	Shares	Sole	2022-08-12
No filing history on record for this holder in this stock.