Position in MGNI
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$138,491,045
-$49,667,377 QoQ
Shares Held
11,657,496
+0.6% QoQ
Ownership
8.14%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2024
7 quarters on record
Voting authority
Sole 96.25434999076988.ToString("F0")%
Shared 0.ToString("F0")%
None 3.745650009230113.ToString("F0")%
Common Shares in MGNI Over Time
Shares Held
Position Value (USD)
Position in Advertising Agencies
Communication Services · as of Mar 31, 2026BlackRock, Inc. holds $13,316,754,494 across 23 Advertising Agencies names. MGNI ranks #6 (1.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | APP |
AppLovin Corp
|
23,640,172 | $9,408,788,456 | |
| 2 | OMC |
Omnicom Group Inc.
|
29,498,159 | $2,221,506,343 | |
| 3 | TTD |
Trade Desk, Inc.
|
37,521,596 | $851,365,003 | |
| 4 | ZD |
Ziff Davis, Inc.
|
6,136,284 | $257,478,470 | |
| 5 | DV |
DoubleVerify Holdings, Inc.
|
19,352,552 | $183,849,238 | |
| 6 | MGNI |
Magnite, Inc.
This page
|
11,657,496 | $138,491,045 | |
| 7 | QNST |
Quinstreet, Inc
|
10,550,030 | $126,705,853 | |
| 8 | STGW |
Stagwell Inc
|
7,822,706 | $49,204,815 |
All Filings in MGNI
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $138,491,045 | 11,657,496 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $188,158,422 | 11,593,249 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $248,578,508 | 11,413,155 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $258,036,812 | 10,698,044 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $111,679,246 | 9,787,840 | Shares | Sole | 2025-05-02 | |
| 2024-12-31 | $161,862,503 | 10,167,243 | Shares | Sole | 2025-02-07 | |
| 2024-09-30 | $136,398,089 | 9,848,238 | Shares | Sole | 2024-11-13 | |
| No filing history on record for this holder in this stock. | ||||||