HARBOR CAPITAL ADVISORS, INC.

Position in MGNI — Magnite, Inc.

CIK 1039128 CHICAGO, IL

Position in MGNI

as of Jun 30, 2026 · filed Aug 7, 2026 Compact

Position Value

$5,928,801

+$2,064,701 QoQ

Shares Held

312,371

-4.0% QoQ

Ownership

0.218%

of shares outstanding

% of Portfolio

0.46%

of 13F equity value

Holder Rank

#65

of 306 holders

Holding Since

Jun 2023

13 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Communication Services · as of Jun 30, 2026

HARBOR CAPITAL ADVISORS, INC. holds $14,977,969 across 7 Advertising Agencies names. MGNI ranks #1 (39.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MGNI	Magnite, Inc. This page	312,371	$5,928,801
2	STGW	Stagwell Inc	686,893	$5,103,614
3	WPP	WPP plc	83,618	$1,295,242
4	NCMI	National CineMedia, Inc.	318,715	$1,211,117
5	ZD	Ziff Davis, Inc.	11,989	$627,863
6	DV	DoubleVerify Holdings, Inc.	45,206	$490,033
7	TTD	Trade Desk, Inc.	17,771	$321,299

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$5,928,801	312,371	-4.0%	Shares	Sole	2026-08-07
2026-03-31	$3,864,100	325,261	+51.8%	Shares	Sole	2026-04-28
2025-12-31	$3,477,293	214,251	+24.4%	Shares	Sole	2026-01-20
2025-09-30	$3,749,884	172,171	-72.8%	Shares	Sole	2025-10-15
2025-06-30	$15,295,625	634,147	+7.2%	Shares	Sole	2025-07-09
2025-03-31	$6,746,881	591,313	-29.8%	Shares	Sole	2025-04-14
2024-12-31	$13,416,755	842,761	-8.5%	Shares	Sole	2025-01-10
2024-09-30	$12,763,204	921,531	+136.0%	Shares	Sole	2024-10-29
2024-06-30	$5,189,239	390,462	+267.5%	Shares	Sole	2024-07-09
2024-03-31	$1,142,295	106,260	+358.6%	Shares	Sole	2024-05-13
2023-12-31	$216,435	23,173	-38.3%	Shares	Sole	2024-01-08
2023-09-30	$283,194	37,559	+32.2%	Shares	Sole	2023-10-20
2023-06-30	$387,741	28,406	—	Shares	Sole	2023-07-11
No filing history on record for this holder in this stock.