Position in MGNI
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$41,740,645
+$21,922,905 QoQ
Shares Held
2,199,191
+31.8% QoQ
Ownership
1.53%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#18
of 306 holders
Holding Since
Sep 2020
23 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
$1,106,534
CallShares
58,300
PutValue
$2,488,278
PutShares
131,100
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, 2026JANE STREET GROUP, LLC holds $110,106,867 across 20 Advertising Agencies names. MGNI ranks #1 (37.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MGNI |
Magnite, Inc.
This page
|
2,199,191 | $41,740,645 | |
| 2 | TTD |
Trade Desk, Inc.
|
1,518,721 | $27,458,475 | |
| 3 | STGW |
Stagwell Inc
|
1,778,820 | $13,216,632 | |
| 4 | APP |
AppLovin Corp
|
19,898 | $10,252,045 | |
| 5 | EVC |
Entravision Communications Corp
|
515,228 | $6,718,572 | |
| 6 | WPP |
WPP plc
|
249,678 | $3,867,511 | |
| 7 | NEXN |
Nexxen International Ltd.
|
350,023 | $3,160,707 | |
| 8 | CRTO |
Criteo S.A.
|
68,493 | $1,252,051 |
All Filings in MGNI
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,106,534 | 58,300 | Call | Defined | 2026-08-14 | |
| 2026-06-30 | $41,740,645 | 2,199,191 | Shares | Defined | 2026-08-14 | |
| 2026-06-30 | $2,488,278 | 131,100 | Put | Defined | 2026-08-14 | |
| 2026-03-31 | $318,384 | 26,800 | Call | Defined | 2026-05-12 | |
| 2026-03-31 | $1,096,524 | 92,300 | Put | Defined | 2026-05-12 | |
| 2026-03-31 | $19,817,740 | 1,668,160 | Shares | Defined | 2026-05-12 | |
| 2025-12-31 | $3,578,715 | 220,500 | Call | Defined | 2026-02-12 | |
| 2025-12-31 | $6,171,504 | 380,253 | Shares | Defined | 2026-02-12 | |
| 2025-12-31 | $2,118,015 | 130,500 | Put | Defined | 2026-02-12 | |
| 2025-09-30 | $23,753,768 | 1,090,623 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $2,794,374 | 128,300 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $6,527,466 | 299,700 | Call | Defined | 2025-11-14 | |
| 2025-06-30 | $6,857,074 | 284,290 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $1,271,124 | 52,700 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $5,668,200 | 235,000 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $2,191,861 | 192,100 | Call | Defined | 2025-05-19 | |
| 2025-03-31 | $677,754 | 59,400 | Put | Defined | 2025-05-19 | |
| 2025-03-31 | $3,043,457 | 266,736 | Shares | Defined | 2025-05-19 | |
| 2024-12-31 | $184,798 | 11,608 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $5,466,928 | 343,400 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $1,224,248 | 76,900 | Put | Defined | 2025-02-14 | |
| 2024-09-30 | $728,510 | 52,600 | Put | Defined | 2024-11-15 | |
| 2024-09-30 | $4,037,275 | 291,500 | Call | Defined | 2024-11-15 | |
| 2024-09-30 | $11,747,624 | 848,204 | Shares | Defined | 2024-11-15 | |
| 2024-06-30 | $3,456,594 | 260,090 | Shares | Defined | 2024-08-15 | |
| 2024-03-31 | $638,850 | 59,428 | Shares | Defined | 2024-05-16 | |
| 2023-12-31 | $1,842,192 | 197,237 | Shares | Defined | 2024-02-15 | |
| 2023-09-30 | $1,086,762 | 144,133 | Shares | Defined | 2023-11-15 | |
| 2023-06-30 | $1,959,880 | 143,581 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $491,066 | 53,031 | Shares | Defined | 2023-05-16 | |
| 2022-12-31 | $1,068,000 | 100,850 | Shares | Defined | 2023-02-15 | |
| 2022-06-30 | $593,121 | 66,793 | Shares | Defined | 2022-08-16 | |
| 2022-03-31 | $1,249,666 | 94,600 | Put | Defined | 2022-05-17 | |
| 2022-03-31 | $584,714 | 44,263 | Shares | Defined | 2022-05-17 | |
| 2022-03-31 | $2,474,233 | 187,300 | Call | Defined | 2022-05-17 | |
| 2021-12-31 | $3,979,500 | 227,400 | Call | Defined | 2022-02-15 | |
| 2021-12-31 | $2,672,774 | 152,730 | Shares | Defined | 2022-02-15 | |
| 2021-12-31 | $2,026,500 | 115,800 | Put | Defined | 2022-02-15 | |
| 2021-09-30 | $3,192,000 | 114,000 | Put | Defined | 2021-11-16 | |
| 2021-09-30 | $4,410,000 | 157,500 | Call | Defined | 2021-11-16 | |
| 2021-09-30 | $4,405,520 | 157,340 | Shares | Defined | 2021-11-16 | |
| 2021-06-30 | $8,067,456 | 238,400 | Call | Defined | 2021-08-16 | |
| 2021-06-30 | $5,688,504 | 168,100 | Put | Defined | 2021-08-16 | |
| 2021-06-30 | $4,670,359 | 138,013 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $20,068,503 | 482,300 | Call | Defined | 2021-05-18 | |
| 2021-03-31 | $11,857,101 | 284,958 | Shares | Defined | 2021-05-18 | |
| 2021-03-31 | $10,697,931 | 257,100 | Put | Defined | 2021-05-18 | |
| 2020-12-31 | $9,449,834 | 307,712 | Shares | Defined | 2021-02-17 | |
| 2020-12-31 | $19,626,761 | 639,100 | Call | Defined | 2021-02-17 | |
| 2020-12-31 | $6,049,870 | 197,000 | Put | Defined | 2021-02-17 | |
| No filing history on record for this holder in this stock. | ||||||