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STATE OF WISCONSIN INVESTMENT BOARD

Position in MGNI — Magnite, Inc.

CIK 854157 MADISON, WI

Position in MGNI

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$3,269,817
+$1,066,434 QoQ
Shares Held
172,277
-7.1% QoQ
Ownership
0.120%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#85
of 306 holders
Holding Since
Jun 2021
21 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MGNI Over Time

Shares Held

Position Value (USD)

Position in Advertising Agencies

Communication Services · as of Jun 30, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $100,296,104 across 11 Advertising Agencies names. MGNI ranks #4 (3.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 MGNI
Magnite, Inc.
This page
172,277 $3,269,817

All Filings in MGNI

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21 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $3,269,817 172,277
2026-03-31 $2,203,383 185,470
2025-12-31 $3,563,442 219,559
2025-09-30 $4,506,390 206,905
2025-06-30 $4,486,175 185,994
2025-03-31 $2,666,300 233,681
2024-12-31 $1,143,979 71,858
2024-09-30 $423,823 30,601
2024-06-30 $137,352 10,335
2024-03-31 $109,123 10,151
2023-12-31 $103,113 11,040
2023-09-30 $986,149 130,789
2023-06-30 $1,815,436 132,999
2023-03-31 $989,384 106,845
2022-12-31 $1,258,261 118,816
2022-09-30 $1,442,417 219,546
2022-06-30 $1,864,897 210,011
2022-03-31 $1,990,747 150,700
2021-12-31 $1,925,000 110,000
2021-09-30 $3,388,000 121,000
2021-06-30 $3,722,400 110,000