Position in MGNI
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$10,130,706
+$5,646,796 QoQ
Shares Held
533,757
+93.2% QoQ
Ownership
0.372%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#49
of 306 holders
Holding Since
Sep 2020
15 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MGNI Over Time
Shares Held
Position Value (USD)
Derivatives in MGNI
reported options exposure · as of Jun 30, 2026CallValue
$14,045,200
CallShares
740,000
PutValue
$2,562,300
PutShares
135,000
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 Jun 30, 2026BANK OF MONTREAL /CAN/ holds $284,800,159 across 8 Advertising Agencies names. MGNI ranks #4 (3.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | APP |
AppLovin Corp
|
387,835 | $199,824,224 | |
| 2 | OMC |
Omnicom Group Inc.
|
755,151 | $54,997,644 | |
| 3 | TTD |
Trade Desk, Inc.
|
604,643 | $10,931,942 | |
| 4 | MGNI |
Magnite, Inc.
This page
|
533,757 | $10,130,706 | |
| 5 | WPP |
WPP plc
|
382,533 | $5,925,434 | |
| 6 | DV |
DoubleVerify Holdings, Inc.
|
150,856 | $1,635,278 | |
| 7 | STGW |
Stagwell Inc
|
150,966 | $1,121,677 | |
| 8 | ZD |
Ziff Davis, Inc.
|
4,454 | $233,254 |
All Filings in MGNI
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $14,045,200 | 740,000 | Call | Defined | 2026-08-12 | |
| 2026-06-30 | $10,130,706 | 533,757 | Shares | Defined | 2026-08-12 | |
| 2026-06-30 | $2,562,300 | 135,000 | Put | Defined | 2026-08-12 | |
| 2025-12-31 | $4,483,910 | 276,273 | Shares | Defined | 2026-02-12 | |
| 2025-09-30 | $5,256,209 | 241,332 | Shares | Defined | 2025-11-13 | |
| 2025-06-30 | $5,845,384 | 242,346 | Shares | Defined | 2025-08-05 | |
| 2025-03-31 | $2,749,181 | 240,945 | Shares | Defined | 2025-05-13 | |
| 2024-12-31 | $2,599,814 | 163,305 | Shares | Defined | 2025-02-13 | |
| 2024-09-30 | $1,916,824 | 138,399 | Shares | Defined | 2024-11-13 | |
| 2023-09-30 | $102,414 | 13,583 | Shares | Defined | 2023-11-01 | |
| 2022-12-31 | $1,059,000 | 100,000 | Put | Defined | 2023-02-01 | |
| 2022-12-31 | $57,757 | 5,454 | Shares | Defined | 2023-02-01 | |
| 2022-09-30 | $657,000 | 100,000 | Put | Defined | 2022-11-10 | |
| 2022-09-30 | $206,133 | 31,375 | Shares | Defined | 2022-11-10 | |
| 2022-06-30 | $888,000 | 100,000 | Put | Defined | 2022-08-11 | |
| 2022-06-30 | $251,382 | 28,309 | Shares | Defined | 2022-08-11 | |
| 2022-03-31 | $1,321,000 | 100,000 | Put | Defined | 2022-05-12 | |
| 2022-03-31 | $139,536 | 10,563 | Shares | Defined | 2022-05-12 | |
| 2021-03-31 | $6,657,600 | 160,000 | Put | Defined | 2021-05-13 | |
| 2021-03-31 | $28,294,800 | 680,000 | Call | Defined | 2021-05-13 | |
| 2021-03-31 | $1,913,309 | 45,982 | Shares | Defined | 2021-05-13 | |
| 2020-12-31 | $3,828,153 | 124,655 | Shares | Defined | 2021-02-12 | |
| 2020-12-31 | $4,913,600 | 160,000 | Put | Defined | 2021-02-12 | |
| 2020-12-31 | $20,882,800 | 680,000 | Call | Defined | 2021-02-12 | |
| 2020-09-30 | $903,721 | 130,032 | Shares | Defined | 2020-11-12 | |
| No filing history on record for this holder in this stock. | ||||||