What does CUSIP 55955D100 represent in this 13F holders report?

CUSIP 55955D100 is the security identifier for MGNI - MAGNITE, INC. - COMMON STOCK used to aggregate holder disclosures.

How many institutions held MGNI - MAGNITE, INC. - COMMON STOCK in Q4 2023?

215 institutional investors reported MGNI - MAGNITE, INC. - COMMON STOCK for Q4 2023. Use the holders table for investor-level position and value details.

MAGNITE, INC. - COMMON STOCK (MGNI)

CUSIP: 55955D100

Q4 2023 13F Holders as of 31 Dec 2023

Type / Class: Equity / COMMON STOCK
Shares outstanding: 145,400,599
Total 13F shares: 102,653,022
Share change: -1,595,638
Total reported value: $958,824,603
Put/Call ratio: 263%
Price per share: $9.34
Number of holders: 215
Value change: -$4,019,427
Number of buys: 84
Number of sells: 97

Quarterly Holders Quick Answers

What is CUSIP 55955D100?
CUSIP 55955D100 identifies MGNI - MAGNITE, INC. - COMMON STOCK in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2024
Previous quarter: Q3 2023

Recent filing periods for CUSIP 55955D100:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of MGNI - MAGNITE, INC. - COMMON STOCK (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
VANGUARD GROUP INC	13F	Company	8.6%	12,441,904	$93,811,956	—	30 Sep 2023	13F
BlackRock Finance, Inc.	13F	Company	6.3%	9,226,929	$69,571,045	—	30 Sep 2023	13F
Granahan Investment Management, LLC	13F	Company	5%	7,203,803	$54,316,675	—	30 Sep 2023	13F
Edenbrook Capital, LLC	13F	Company	4%	5,848,398	$44,096,921	—	30 Sep 2023	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	3.9%	5,687,768	$42,886,126	—	30 Sep 2023	13F
FMR LLC	13F	Company	3%	4,400,312	$33,178,350	—	30 Sep 2023	13F
Rubric Capital Management LP	13F	Company	2.8%	4,000,000	$30,160,000	—	30 Sep 2023	13F
Nine Ten Capital Management LLC	13F	Company	2.7%	3,931,014	$29,640,000	—	30 Sep 2023	13F
Bank of New York Mellon Corp	13F	Company	2.4%	3,453,644	$26,040,475	—	30 Sep 2023	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	2%	2,887,412	$21,771,086	—	30 Sep 2023	13F
STATE STREET CORP	13F	Company	1.9%	2,801,385	$21,122,443	—	30 Sep 2023	13F
KENNEDY CAPITAL MANAGEMENT LLC	13F	Company	1.9%	2,692,371	$20,300,477	—	30 Sep 2023	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.8%	2,672,981	$20,156,640	—	30 Sep 2023	13F
Nuveen Asset Management, LLC	13F	Company	1.8%	2,565,699	$19,345,371	—	30 Sep 2023	13F
Burgundy Asset Management Ltd.	13F	Company	1.6%	2,355,258	$17,759,000	—	30 Sep 2023	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	1.4%	2,046,734	$15,432,375	—	30 Sep 2023	13F
Parallax Volatility Advisers, L.P.	13F	Company	1.2%	1,723,137	$12,992,453	—	30 Sep 2023	13F
ROYCE & ASSOCIATES LP	13F	Company	1.1%	1,638,168	$12,351,787	—	30 Sep 2023	13F
NORTHERN TRUST CORP	13F	Company	0.93%	1,351,851	$10,192,956	—	30 Sep 2023	13F
JPMORGAN CHASE & CO	13F	Company	0.78%	1,127,347	$8,500,196	—	30 Sep 2023	13F
Kopion Asset Management, LLC	13F	Company	0.71%	1,027,615	$7,748,217	—	30 Sep 2023	13F
NORDEA INVESTMENT MANAGEMENT AB	13F	Company	0.7%	1,014,547	$7,730,848	—	30 Sep 2023	13F
NORGES BANK	13F	Company	0.67%	975,714	$7,356,884	—	30 Sep 2023	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.66%	959,600	$7,235,384	—	30 Sep 2023	13F
Penn Capital Management Company, LLC	13F	Company	0.62%	896,640	$6,769,803	—	30 Sep 2023	13F
Meros Investment Management, LP	13F	Company	0.58%	838,462	$6,322,003	—	30 Sep 2023	13F
SILVERCREST ASSET MANAGEMENT GROUP LLC	13F	Company	0.56%	818,934	$6,174,762	—	30 Sep 2023	13F
Williams Jones Wealth Management, LLC.	13F	Company	0.55%	806,296	$6,079,472	—	30 Sep 2023	13F
DRIEHAUS CAPITAL MANAGEMENT LLC	13F	Company	0.55%	795,157	$5,995,484	—	30 Sep 2023	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.5%	727,771	$5,487,393	—	30 Sep 2023	13F
FRONTIER CAPITAL MANAGEMENT CO LLC	13F	Company	0.48%	703,316	$5,303,003	—	30 Sep 2023	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	0.44%	632,808	$4,771,373	—	30 Sep 2023	13F
CITADEL ADVISORS LLC	13F	Company	0.38%	553,751	$4,175,283	—	30 Sep 2023	13F
Roumell Asset Management, LLC	13F	Company	0.37%	542,511	$4,090,533	—	30 Sep 2023	13F
KING LUTHER CAPITAL MANAGEMENT CORP	13F	Company	0.37%	537,409	$4,052,064	—	30 Sep 2023	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.36%	525,321	$3,960,920	—	30 Sep 2023	13F
Thomas Kershaw	3/4/5	Chief Technology Officer	— class O/S missing	473,763	$3,737,990	—	17 May 2021	3/4/5
S Squared Technology, LLC	13F	Company	0.34%	495,746	$3,737,925	—	30 Sep 2023	13F
SCOUT INVESTMENTS, INC.	13F	Company	0.33%	479,933	$3,561,102	—	30 Sep 2023	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	0.3%	433,630	$3,269,570	—	30 Sep 2023	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.27%	393,253	$2,965,127	—	30 Sep 2023	13F
MORGAN STANLEY	13F	Company	0.27%	385,598	$2,907,408	—	30 Sep 2023	13F
Madison Asset Management, LLC	13F	Company	0.25%	359,038	$2,707,147	—	30 Sep 2023	13F
P.A.W. CAPITAL CORP	13F	Company	0.24%	350,000	$2,639,000	—	30 Sep 2023	13F
Joseph R. Prusz	3/4/5	Chief Revenue Officer, DV+	— class O/S missing	311,083	$2,454,445	—	15 Feb 2022	3/4/5
Qube Research & Technologies Ltd	13F	Company	0.21%	302,947	$2,284,220	—	30 Sep 2023	13F
FIRST TRUST ADVISORS LP	13F	Company	0.19%	283,418	$2,136,971	—	30 Sep 2023	13F
Swiss National Bank	13F	Company	0.17%	253,400	$1,910,636	—	30 Sep 2023	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.17%	250,086	$1,885,648	—	30 Sep 2023	13F
Harspring Capital Management, LLC	13F	Company	0.17%	250,000	$1,885,000	—	30 Sep 2023	13F

Institutional Holders of MAGNITE, INC. - COMMON STOCK (MGNI) as of Q4 2023

As of 31 Dec 2023, MAGNITE, INC. - COMMON STOCK (MGNI) was held by 215 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 102,653,022 shares. The largest 10 holders included VANGUARD GROUP INC, BlackRock Inc., FMR LLC, Granahan Investment Management, LLC, Edenbrook Capital, LLC, DIMENSIONAL FUND ADVISORS LP, Nine Ten Capital Management LLC, Bank of New York Mellon Corp, STATE STREET CORP, and WELLINGTON MANAGEMENT GROUP LLP. This page lists 216 institutional shareholders reporting positions in this security for the Q4 2023 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2023 vs Q3 2023 Across Filers

Q3 2023 holders

208

Q4 2023 holders

215

Holder diff

Investor	Q3 2023 Shares	Q4 2023 Shares	Share Diff	Share Chg %	Q3 2023 Value $	Q4 2023 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.