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XTX Topco Ltd

Position in MGNI — Magnite, Inc.

CIK 1828301 LONDON, X0

Position in MGNI

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$1,741,501
+$984,161 QoQ
Shares Held
146,591
+214.1% QoQ
Ownership
0.102%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2021
7 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in MGNI Over Time

Shares Held

Position Value (USD)

Position in Advertising Agencies

Communication Services · as of Mar 31, 2026

XTX Topco Ltd holds $18,480,324 across 22 Advertising Agencies names. MGNI ranks #3 (9.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 MGNI
Magnite, Inc.
This page
146,591 $1,741,501

All Filings in MGNI

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7 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,741,501 146,591
2025-12-31 $757,340 46,663
2025-09-30 $1,773,872 81,445
2025-03-31 $1,541,696 135,118
2024-09-30 $220,062 15,889
2022-09-30 $226,093 34,413
2021-06-30 $270,889 8,005