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Caption Management, LLC

Position in MGNI — Magnite, Inc.

CIK 1706766 OKLAHOMA CITY, OK

Position in MGNI

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$2,763,298
-$2,048,731 QoQ
Shares Held
145,590
-64.1% QoQ
Ownership
0.102%
of shares outstanding
% of Portfolio
0.11%
of 13F equity value
Holder Rank
#96
of 306 holders
Holding Since
Sep 2020
19 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, 2026
CallValue
$6,718,920
CallShares
354,000
PutValue
$28,470,000
PutShares
1,500,000

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, 2026

Caption Management, LLC holds $3,652,817 across 2 Advertising Agencies names. MGNI ranks #1 (75.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 MGNI
Magnite, Inc.
This page
145,590 $2,763,298

All Filings in MGNI

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29 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $28,470,000 1,500,000
2026-06-30 $6,718,920 354,000
2026-06-30 $2,763,298 145,590
2026-03-31 $4,812,029 405,053
2026-03-31 $17,820,000 1,500,000
2025-12-31 $262,926 16,200
2025-12-31 $2,637,375 162,500
2025-12-31 $19,183,860 1,182,000
2025-09-30 $36,366,066 1,669,700
2025-09-30 $8,712,000 400,000
2025-06-30 $38,278,440 1,587,000
2025-03-31 $4,564,000 400,000
2024-12-31 $3,101,216 194,800
2024-09-30 $274,230 19,800
2024-09-30 $507,976 36,677
2024-06-30 $332,250 25,000
2024-03-31 $268,750 25,000
2023-12-31 $108,792 11,648
2023-09-30 $226,200 30,000
2022-06-30 $910,200 102,500
2022-03-31 $1,186,258 89,800
2021-12-31 $1,750,000 100,000
2021-12-31 $463,750 26,500
2021-06-30 $169,200 5,000
2021-06-30 $162,432 4,800
2021-03-31 $445,227 10,700
2020-12-31 $2,763,900 90,000
2020-09-30 $695,000 100,000
2020-09-30 $271,084 39,005