Position in MGNI
as of Mar 31, 2026
· filed May 5, 2026
Position Value
$6,702,173
+$3,901,752 QoQ
Shares Held
564,156
+227.0% QoQ
Ownership
0.394%
of shares outstanding
% of Portfolio
0.36%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2024
6 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, 2026CenterBook Partners LP holds $7,389,100 across 2 Advertising Agencies names. MGNI ranks #1 (90.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MGNI |
Magnite, Inc.
This page
|
564,156 | $6,702,173 | |
| 2 | ZD |
Ziff Davis, Inc.
|
16,371 | $686,927 |
All Filings in MGNI
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6 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $6,702,173 | 564,156 | Shares | Sole | 2026-05-05 | |
| 2025-12-31 | $2,800,421 | 172,546 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $1,585,279 | 72,786 | Shares | Sole | 2025-11-07 | |
| 2025-06-30 | $2,225,455 | 92,266 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $3,617,015 | 317,004 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $9,962,178 | 625,765 | Shares | Sole | 2025-02-13 | |
| No filing history on record for this holder in this stock. | ||||||