Position in MGNI
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$14,715,518
+$5,433,484 QoQ
Shares Held
1,238,680
+116.6% QoQ
Ownership
0.865%
of shares outstanding
% of Portfolio
11.65%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2023
10 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, 2026GRIZZLYROCK CAPITAL, LLC holds $14,715,518 across 1 Advertising Agencies name. MGNI ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MGNI |
Magnite, Inc.
This page
|
1,238,680 | $14,715,518 |
All Filings in MGNI
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10 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $14,715,518 | 1,238,680 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $9,282,034 | 571,906 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $8,513,932 | 390,906 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $23,500,670 | 974,323 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $10,252,352 | 898,541 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $13,747,572 | 863,541 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $12,024,168 | 868,171 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $10,674,089 | 803,167 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $7,367,587 | 685,357 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $6,655,964 | 712,630 | Shares | Sole | 2024-02-14 | |
| No filing history on record for this holder in this stock. | ||||||