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SG Americas Securities, LLC

Broker-Dealer

Position in MGNI — Magnite, Inc.

CIK 1313360 NEW YORK, NY

Position in MGNI

as of Mar 31, 2026 · filed Apr 16, 2026
Position Value
$679,975
-$281,571 QoQ
Shares Held
57,237
-3.4% QoQ
Ownership
0.040%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2020
20 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

SG Americas Securities, LLC holds $115,905,157 across 9 Advertising Agencies names. MGNI ranks #6 (0.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 MGNI
Magnite, Inc.
This page
57,237 $679,975

All Filings in MGNI

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20 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $679,975 57,237
2025-12-31 $961,546 59,245
2025-09-30 $905,895 41,593
2025-06-30 $998,037 41,378
2025-03-31 $273,897 24,005
2024-09-30 $480,927 34,724
2024-06-30 $599,844 45,135
2024-03-31 $659,372 61,337
2023-12-31 $451,589 48,350
2023-09-30 $1,699,666 225,420
2023-03-31 $1,478,766 159,694
2022-12-31 $286,946 27,096
2022-09-30 $265,250 40,373
2022-06-30 $424,996 47,860
2021-12-31 $468,527 26,773
2021-09-30 $1,422,624 50,808
2021-06-30 $195,527 5,778
2021-03-31 $1,031,678 24,794
2020-12-31 $590,184 19,218
2020-09-30 $231,414 33,297