Position in MGNI
as of Mar 31, 2026
· filed May 11, 2026
Position Value
$188,416
-$646,193 QoQ
Shares Held
15,860
-69.2% QoQ
Ownership
0.011%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2020
23 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)
Derivatives in MGNI
reported options exposure · as of Sep 30, 2025CallValue
$2,310,858
CallShares
106,100
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Advertising Agencies
Communication Services · as of Mar 31, 2026CITIGROUP INC holds $353,920,486 across 18 Advertising Agencies names. MGNI ranks #6 (0.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | APP |
AppLovin Corp
|
416,476 | $165,757,448 | |
| 2 | TTD |
Trade Desk, Inc.
|
4,912,283 | $111,459,700 | |
| 3 | OMC |
Omnicom Group Inc.
|
961,986 | $72,447,165 | |
| 4 | ZD |
Ziff Davis, Inc.
|
45,360 | $1,903,305 | |
| 5 | DV |
DoubleVerify Holdings, Inc.
|
191,508 | $1,819,326 | |
| 6 | MGNI |
Magnite, Inc.
This page
|
15,860 | $188,416 | |
| 7 | QNST |
Quinstreet, Inc
|
12,382 | $148,707 | |
| 8 | STGW |
Stagwell Inc
|
19,004 | $119,534 |
All Filings in MGNI
Export CSV
29 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $188,416 | 15,860 | Shares | Defined | 2026-05-11 | |
| 2025-12-31 | $834,609 | 51,424 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $2,310,858 | 106,100 | Call | Defined | 2025-11-10 | |
| 2025-09-30 | $3,557,608 | 163,343 | Shares | Defined | 2025-11-10 | |
| 2025-06-30 | $5,752,425 | 238,492 | Shares | Defined | 2025-08-11 | |
| 2025-03-31 | $1,752,208 | 153,568 | Shares | Defined | 2025-05-12 | |
| 2024-12-31 | $5,391,863 | 338,685 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $3,184,875 | 229,955 | Shares | Defined | 2024-11-12 | |
| 2024-06-30 | $2,103,366 | 158,267 | Shares | Defined | 2024-08-12 | |
| 2024-03-31 | $1,584,205 | 147,368 | Shares | Defined | 2024-05-10 | |
| 2023-12-31 | $970,845 | 103,945 | Shares | Defined | 2024-02-09 | |
| 2023-09-30 | $916,660 | 121,573 | Shares | Defined | 2023-12-06 | |
| 2023-06-30 | $2,759,593 | 202,168 | Shares | Defined | 2023-08-10 | |
| 2023-03-31 | $2,487,328 | 268,610 | Shares | Defined | 2023-05-11 | |
| 2022-12-31 | $3,847,420 | 363,307 | Shares | Defined | 2023-02-09 | |
| 2022-09-30 | $1,860,504 | 283,182 | Shares | Defined | 2022-11-10 | |
| 2022-09-30 | $328,500 | 50,000 | Put | Defined | 2022-11-10 | |
| 2022-06-30 | $444,000 | 50,000 | Put | Defined | 2022-08-10 | |
| 2022-06-30 | $2,883,796 | 324,752 | Shares | Defined | 2022-08-10 | |
| 2022-03-31 | $5,029,296 | 380,719 | Shares | Defined | 2022-05-12 | |
| 2022-03-31 | $660,500 | 50,000 | Put | Defined | 2022-05-12 | |
| 2021-12-31 | $5,586,087 | 319,205 | Shares | Defined | 2022-02-10 | |
| 2021-12-31 | $875,000 | 50,000 | Put | Defined | 2022-02-10 | |
| 2021-09-30 | $1,400,000 | 50,000 | Put | Defined | 2021-11-10 | |
| 2021-09-30 | $7,890,904 | 281,818 | Shares | Defined | 2021-11-10 | |
| 2021-06-30 | $7,759,714 | 229,306 | Shares | Defined | 2021-08-10 | |
| 2021-03-31 | $2,959,593 | 71,127 | Shares | Defined | 2021-05-13 | |
| 2020-12-31 | $1,548,029 | 50,408 | Shares | Defined | 2021-02-11 | |
| 2020-09-30 | $77,131 | 11,098 | Shares | Defined | 2020-11-12 | |
| No filing history on record for this holder in this stock. | ||||||