RHUMBLINE ADVISERS

Position in MGNI — Magnite, Inc.

CIK 1115418 BOSTON, MA

Position in MGNI

as of Mar 31, 2026 · filed May 12, 2026 Compact

Position Value

$2,138,114

-$847,313 QoQ

Shares Held

179,976

-2.2% QoQ

Ownership

0.126%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2020

23 quarters on record

Voting authority Sole 24.41992265635418.ToString("F0")% Shared 0.ToString("F0")% None 75.58007734364583.ToString("F0")%

Communication Services · as of Mar 31, 2026

RHUMBLINE ADVISERS holds $261,218,500 across 16 Advertising Agencies names. MGNI ranks #6 (0.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	APP	AppLovin Corp	444,465	$176,897,070
2	OMC	Omnicom Group Inc.	653,692	$49,229,544
3	TTD	Trade Desk, Inc.	948,080	$21,511,935
4	ZD	Ziff Davis, Inc.	115,155	$4,831,903
5	DV	DoubleVerify Holdings, Inc.	329,228	$3,127,666
6	MGNI	Magnite, Inc. This page	179,976	$2,138,114
7	QNST	Quinstreet, Inc	148,979	$1,789,237
8	STGW	Stagwell Inc	131,494	$827,097

23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$2,138,114	179,976	-2.2%	Shares	Sole	2026-05-12
2025-12-31	$2,985,427	183,945	-15.4%	Shares	Sole	2026-02-13
2025-09-30	$4,732,946	217,307	-2.7%	Shares	Sole	2025-11-06
2025-06-30	$5,389,035	223,426	+16.1%	Shares	Sole	2025-08-12
2025-03-31	$2,196,447	192,502	+4.4%	Shares	Sole	2025-05-29
2024-12-31	$2,934,549	184,331	-2.8%	Shares	Sole	2025-05-29
2024-09-30	$2,627,123	189,684	-6.2%	Shares	Sole	2024-11-12
2024-06-30	$2,688,208	202,273	-6.7%	Shares	Sole	2024-08-01
2024-03-31	$2,331,675	216,900	+1.0%	Shares	Sole	2024-05-09
2023-12-31	$2,005,755	214,749	-4.5%	Shares	Sole	2024-02-08
2023-09-30	$1,695,715	224,896	+2.3%	Shares	Sole	2023-11-09
2023-06-30	$3,001,457	219,887	-6.5%	Shares	Sole	2023-08-08
2023-03-31	$2,178,526	235,262	+2.8%	Shares	Sole	2023-05-11
2022-12-31	$2,424,326	228,926	+5.6%	Shares	Sole	2023-02-14
2022-09-30	$1,424,481	216,816	+7.4%	Shares	Sole	2022-11-10
2022-06-30	$1,791,957	201,797	+34.3%	Shares	Sole	2022-08-11
2022-03-31	$1,984,313	150,213	+4.0%	Shares	Sole	2022-05-12
2021-12-31	$2,528,102	144,463	+4.3%	Shares	Sole	2022-02-10
2021-09-30	$3,879,596	138,557	+21.7%	Shares	Sole	2021-11-12
2021-06-30	$3,854,139	113,893	-22.0%	Shares	Sole	2021-08-05
2021-03-31	$6,074,810	145,994	-5.4%	Shares	Sole	2021-05-06
2020-12-31	$4,736,986	154,249	+2.7%	Shares	Sole	2021-02-10
2020-09-30	$1,043,980	150,213	—	Shares	Sole	2020-11-12
No filing history on record for this holder in this stock.