Position in MGNI
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$317,782
+$161,762 QoQ
Shares Held
16,743
+27.5% QoQ
Ownership
0.012%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#191
of 306 holders
Holding Since
Sep 2020
24 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 Dec 31, 2025CallValue
$146,070
CallShares
9,000
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 Jun 30, 2026Parallax Volatility Advisers, L.P. holds $319,327 across 2 Advertising Agencies names. MGNI ranks #1 (99.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MGNI |
Magnite, Inc.
This page
|
16,743 | $317,782 | |
| 2 | APP |
AppLovin Corp
|
3 | $1,545 |
All Filings in MGNI
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $317,782 | 16,743 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $156,020 | 13,133 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $887,099 | 54,658 | Shares | Sole | 2026-02-17 | |
| 2025-12-31 | $146,070 | 9,000 | Call | Sole | 2026-02-17 | |
| 2025-09-30 | $2,846,275 | 130,683 | Shares | Sole | 2025-11-14 | |
| 2025-09-30 | $304,920 | 14,000 | Call | Sole | 2025-11-14 | |
| 2025-06-30 | $12,060,000 | 500,000 | Put | Sole | 2025-08-14 | |
| 2025-06-30 | $337,680 | 14,000 | Call | Sole | 2025-08-14 | |
| 2025-06-30 | $4,240,609 | 175,813 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $11,295,900 | 990,000 | Put | Sole | 2025-05-15 | |
| 2025-03-31 | $3,069,096 | 268,983 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $729,136 | 45,800 | Call | Sole | 2025-02-14 | |
| 2024-12-31 | $3,470,018 | 217,966 | Shares | Sole | 2025-02-14 | |
| 2024-12-31 | $29,292,800 | 1,840,000 | Put | Sole | 2025-02-14 | |
| 2024-09-30 | $1,119,080 | 80,800 | Call | Sole | 2024-11-14 | |
| 2024-09-30 | $25,345,500 | 1,830,000 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $4,985,653 | 359,975 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $23,722,650 | 1,785,000 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $1,073,832 | 80,800 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $7,193,544 | 541,275 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $8,029,175 | 746,900 | Shares | Sole | 2024-05-15 | |
| 2024-03-31 | $492,350 | 45,800 | Call | Sole | 2024-05-15 | |
| 2024-03-31 | $19,188,750 | 1,785,000 | Put | Sole | 2024-05-15 | |
| 2023-12-31 | $10,644,844 | 1,139,705 | Shares | Sole | 2024-02-14 | |
| 2023-12-31 | $934 | 100 | Call | Sole | 2024-02-14 | |
| 2023-12-31 | $22,205,850 | 2,377,500 | Put | Sole | 2024-02-14 | |
| 2023-09-30 | $5,655,754 | 750,100 | Call | Sole | 2023-11-14 | |
| 2023-09-30 | $19,811,350 | 2,627,500 | Put | Sole | 2023-11-14 | |
| 2023-09-30 | $12,992,452 | 1,723,137 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $38,969,385 | 2,854,900 | Put | Sole | 2023-08-14 | |
| 2023-06-30 | $10,781,275 | 789,837 | Shares | Sole | 2023-08-14 | |
| 2023-06-30 | $6,826,365 | 500,100 | Call | Sole | 2023-08-14 | |
| 2023-03-31 | $7,982,120 | 862,000 | Call | Sole | 2023-05-15 | |
| 2023-03-31 | $10,891,482 | 1,176,186 | Shares | Sole | 2023-05-15 | |
| 2023-03-31 | $31,057,114 | 3,353,900 | Put | Sole | 2023-05-15 | |
| 2022-12-31 | $16,304,999 | 1,539,660 | Shares | Sole | 2023-02-27 | |
| 2022-12-31 | $43,873,311 | 4,142,900 | Put | Sole | 2023-02-27 | |
| 2022-12-31 | $3,774,276 | 356,400 | Call | Sole | 2023-02-27 | |
| 2022-09-30 | $12,685,093 | 1,930,760 | Shares | Sole | 2022-11-21 | |
| 2022-09-30 | $59,787 | 9,100 | Call | Sole | 2022-11-21 | |
| 2022-09-30 | $21,282,858 | 3,239,400 | Put | Sole | 2022-11-21 | |
| 2022-06-30 | $2,109,888 | 237,600 | Call | Sole | 2022-08-17 | |
| 2022-06-30 | $11,499,804 | 1,295,023 | Shares | Sole | 2022-08-17 | |
| 2022-06-30 | $29,191,224 | 3,287,300 | Put | Sole | 2022-08-17 | |
| 2022-03-31 | $14,723,826 | 1,114,597 | Shares | Sole | 2022-05-16 | |
| 2022-03-31 | $29,377,719 | 2,223,900 | Put | Sole | 2022-05-16 | |
| 2022-03-31 | $36,988 | 2,800 | Call | Sole | 2022-05-16 | |
| 2021-12-31 | $9,453,045 | 540,174 | Shares | Sole | 2022-02-14 | |
| 2021-12-31 | $43,820,000 | 2,504,000 | Put | Sole | 2022-02-14 | |
| 2021-12-31 | $3,305,750 | 188,900 | Call | Sole | 2022-02-14 | |
| No filing history on record for this holder in this stock. | ||||||