PICTON MAHONEY ASSET MANAGEMENT

Position in MGNI — Magnite, Inc.

CIK 1539041 Toronto, A6

Position in MGNI

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

Position Value

$7,639,766

+$1,340,400 QoQ

Shares Held

643,078

+65.7% QoQ

Ownership

0.449%

of shares outstanding

% of Portfolio

0.08%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2021

5 quarters on record

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

Communication Services · as of Mar 31, 2026

PICTON MAHONEY ASSET MANAGEMENT holds $11,567,158 across 5 Advertising Agencies names. MGNI ranks #1 (66.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MGNI	Magnite, Inc. This page	643,078	$7,639,766
2	STGW	Stagwell Inc	299,942	$1,886,635
3	OMC	Omnicom Group Inc.	21,027	$1,583,543
4	APP	AppLovin Corp	1,147	$456,506
5	QNST	Quinstreet, Inc	59	$708

5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$7,639,766	643,078	+65.7%	Shares	Sole	2026-05-13
2025-12-31	$6,299,366	388,131	+0.2%	Shares	Sole	2026-02-11
2025-09-30	$8,436,090	387,332	+203.0%	Shares	Sole	2025-11-12
2025-06-30	$3,083,742	127,850	+3660.3%	Shares	Sole	2025-08-12
2021-06-30	$115,056	3,400	—	Shares	Sole	2021-08-11
No filing history on record for this holder in this stock.