TUDOR INVESTMENT CORP ET AL

Position in MGNI — Magnite, Inc.

CIK 923093 STAMFORD, CT

Back to MGNI Full portfolio

Position in MGNI

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$874,902

+$312,143 QoQ

Shares Held

73,645

+112.4% QoQ

Ownership

0.051%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2020

19 quarters on record

Voting authority Sole 50.ToString("F0")% Shared 50.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 Mar 31, 2026

CallValue

$664,092

CallShares

55,900

PutValue

PutShares

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, 2026

TUDOR INVESTMENT CORP ET AL holds $34,531,230 across 5 Advertising Agencies names. MGNI ranks #5 (2.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	TTD	Trade Desk, Inc.	855,366	$19,408,254
2	APP	AppLovin Corp	18,251	$7,263,898
3	DV	DoubleVerify Holdings, Inc.	618,906	$5,879,607
4	CCO	Clear Channel Outdoor Holdings, Inc.	466,063	$1,104,569
5	MGNI	Magnite, Inc. This page	73,645	$874,902

All Filings in MGNI

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26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$874,902	73,645	+31.7%	Shares	Defined	2026-05-15
2026-03-31	$664,092	55,900	-37.5%	Call	Defined	2026-05-15
2025-12-31	$1,450,962	89,400	-49.5%	Put	Defined	2026-02-17
2025-12-31	$2,874,333	177,100	+410.8%	Call	Defined	2026-02-17
2025-12-31	$562,759	34,674	-92.3%	Shares	Defined	2026-02-17
2025-09-30	$9,781,594	449,109	+2541.8%	Shares	Defined	2025-11-14
2025-09-30	$370,260	17,000	+33.9%	Call	Defined	2025-11-14
2025-09-30	$276,606	12,700	-40.1%	Put	Defined	2025-11-14
2025-03-31	$241,892	21,200	+32.5%	Call	Defined	2025-05-15
2025-03-31	$182,560	16,000	-94.1%	Put	Defined	2025-05-15
2024-12-31	$4,351,509	273,336	-18.5%	Shares	Defined	2025-02-14
2024-09-30	$4,645,788	335,436	+9.2%	Shares	Defined	2024-11-14
2024-06-30	$4,080,707	307,051	-37.6%	Shares	Defined	2024-08-14
2024-03-31	$5,291,182	492,203	+42.6%	Shares	Defined	2024-05-15
2023-12-31	$3,223,495	345,128	+49.5%	Shares	Defined	2024-02-14
2023-09-30	$1,741,212	230,930	+487.1%	Shares	Defined	2023-11-15
2023-06-30	$536,936	39,336	-14.7%	Shares	Defined	2023-08-14
2023-03-31	$427,200	46,134	-75.7%	Shares	Defined	2023-05-15
2022-12-31	$2,012,269	190,016	-45.7%	Shares	Defined	2023-02-14
2022-09-30	$2,298,849	349,901	+2600.1%	Shares	Defined	2022-11-14
2022-06-30	$115,075	12,959	+8.9%	Shares	Defined	2022-08-15
2022-06-30	$105,672	11,900	-45.6%	Put	Defined	2022-08-15
2022-03-31	$289,008	21,878	-65.5%	Shares	Defined	2022-05-16
2021-12-31	$1,110,987	63,485	+98.5%	Shares	Defined	2022-02-14
2021-03-31	$1,330,521	31,976	+124.0%	Shares	Defined	2021-05-17
2020-12-31	$438,323	14,273	—	Shares	Defined	2021-02-16
No filing history on record for this holder in this stock.