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Magnite, Inc.

MGNI
Exchange
Nasdaq
Industry
Services-Computer Programming, Data Processing, Etc.
SEC CIK
0001595974

In the last 90 days, Magnite, Inc. insiders filed 0 open-market purchases and 24 sales; 311 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B in total; no superinvestor holds it.

13F holders, Q4 2022

Institutional positions in Magnite, Inc. as of Dec 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
231
+17 vs. Q3 2022
Shares held
93.3M
−9.87M (−9.6%) vs. Q3 2022
Total value
$988.1M
+$309.8M (+45.7%) vs. Q3 2022
New holders
47
73 more added
Sold out
30
69 more reduced

4 institutions that held it in Q3 2022 haven't filed for Q4 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2022: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MGNI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2022: 231 institutions
Q1 2021: 280 institutionsQ2 2021: 268 institutionsQ3 2021: 279 institutionsQ4 2021: 248 institutionsQ1 2022: 231 institutionsQ2 2022: 231 institutionsQ3 2022: 218 institutionsQ4 2022: 231 institutionsQ1 2023: 224 institutionsQ2 2023: 224 institutionsQ3 2023: 215 institutionsQ4 2023: 217 institutionsQ1 2024: 232 institutionsQ2 2024: 269 institutionsQ3 2024: 280 institutionsQ4 2024: 286 institutionsQ1 2025: 293 institutionsQ2 2025: 287 institutionsQ3 2025: 316 institutionsQ4 2025: 304 institutionsQ1 2026: 297 institutionsQ2 2026: 311 institutions
Value heldQ4 2022: $988.1M
Q1 2021: $3.59BQ2 2021: $2.89BQ3 2021: $2.52BQ4 2021: $1.57BQ1 2022: $1.17BQ2 2022: $781.6MQ3 2022: $679.0MQ4 2022: $988.1MQ1 2023: $892.4MQ2 2023: $1.39BQ3 2023: $780.6MQ4 2023: $959.0MQ1 2024: $1.10BQ2 2024: $1.39BQ3 2024: $1.65BQ4 2024: $1.97BQ1 2025: $1.52BQ2 2025: $3.54BQ3 2025: $3.00BQ4 2025: $2.22BQ1 2026: $1.56BQ2 2026: $2.69B
Institutions holding MGNI and their total value by quarter
QuarterHoldersValue
Q2 2026311$2.69B
Q1 2026297$1.56B
Q4 2025304$2.22B
Q3 2025316$3.00B
Q2 2025287$3.54B
Q1 2025293$1.52B
Q4 2024286$1.97B
Q3 2024280$1.65B
Q2 2024269$1.39B
Q1 2024232$1.10B
Q4 2023217$959.0M
Q3 2023215$780.6M
Q2 2023224$1.39B
Q1 2023224$892.4M
Q4 2022231$988.1M
Q3 2022218$679.0M
Q2 2022231$781.6M
Q1 2022231$1.17B
Q4 2021248$1.57B
Q3 2021279$2.52B
Q2 2021268$2.89B
Q1 2021280$3.59B

Institutions, Q4 2022

Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q3 2022.

Institutions holding MGNI in Q4 2022
InstitutionSharesValue% of portfolioChange in sharesAction
Scout Investments, Inc.514,349$5.45M0.11%−63,691−11.0%Reduced
Meros Investment Management, LP582,120$6.17M3.64%+198,168+51.6%Added
Silvercrest Asset Management Group LLC637,992$6.76M0.05%+80,925+14.5%Added
Citadel Advisors LLC639,851$6.78M0.01%−224,178−25.9%Reduced
UBS Asset Management Americas Inc651,658$6.90M0.00%+38,744+6.3%Added
Goldman Sachs Group Inc725,468$7.68M0.00%−180,635−19.9%Reduced
Williams Jones Wealth Management, LLC.736,665$7.80M0.13%−35,728−4.6%Reduced
Kopion Asset Management, LLC786,312$8.33M8.42%−89,309−10.2%Reduced
Morgan Stanley900,379$9.54M0.00%+55,709+6.6%Added
Charles Schwab Investment Management Inc905,995$9.59M0.00%+26,915+3.1%Added
Renaissance Technologies LLC956,254$10.1M0.01%+430,700+82.0%Added
Builders Union LLP1,169,700$12.4M12.44%00.0%Unchanged
Norges Bank1,187,688$12.6M0.00%00.0%Unchanged
Northern Trust Corp1,224,240$13.0M0.00%+27,201+2.3%Added
Victory Capital Management Inc1,257,147$13.3M0.02%+1,244,166+9,584.5%Added
Nine Ten Capital Management LLC1,348,549$14.3M2.48%−742,863−35.5%Reduced
Royce & Associates LP1,350,550$14.3M0.15%+314,200+30.3%Added
Wellington Management Group LLP1,483,900$15.7M0.00%+71,597+5.1%Added
Parallax Volatility Advisers, L.P.1,539,660$16.3M0.42%−391,100−20.3%Reduced
Frontier Capital Management Co LLC1,586,308$16.8M0.18%+1,586,308New
Kennedy Capital Management, Inc.1,624,459$17.2M0.49%+321,879+24.7%Added
Dimensional Fund Advisors LP1,817,327$19.2M0.01%+426,186+30.6%Added
Geode Capital Management, LLC2,366,964$25.1M0.00%+57,062+2.5%Added
State Street Corp2,681,770$28.4M0.00%−53,783−2.0%Reduced
Nuveen Asset Management, LLC3,067,051$32.5M0.01%−14,061,226−82.1%Reduced
Bank of New York Mellon Corp3,485,488$36.9M0.01%+519,574+17.5%Added
FMR LLC6,129,531$64.9M0.01%+391,142+6.8%Added
Edenbrook Capital, LLC6,893,079$73.0M25.22%+1,100,283+19.0%Added
BlackRock Inc.8,845,887$93.7M0.00%+294,549+3.4%Added
Granahan Investment Management Inc10,453,950$110.7M3.39%+35,988+0.3%Added
Vanguard Group Inc12,436,899$131.7M0.00%+346,479+2.9%Added
Equitec Proprietary Markets, LLC0$00.00%−312,964−100.0%Sold out
Walleye Capital LLC0$00.00%−237,119−100.0%Sold out
CastleKnight Management LP0$00.00%−223,300−100.0%Sold out
Alpha Paradigm Partners, LLC0$00.00%−194,667−100.0%Sold out
Prudential Financial Inc0$00.00%−124,222−100.0%Sold out
AlphaCrest Capital Management LLC0$00.00%−151,129−100.0%Sold out
Beacon Investment Advisory Services, Inc.0$00.00%−147,292−100.0%Sold out
First Trust Advisors LP0$00.00%−118,651−100.0%Sold out
Chartwell Investment Partners, LLC0$00.00%−113,422−100.0%Sold out
Group One Trading, L.P.0$00.00%−81,845−100.0%Sold out
Susquehanna International Group, LLP0$00.00%−76,563−100.0%Sold out
PDT Partners, LLC0$00.00%−68,347−100.0%Sold out
Thrivent Financial for Lutherans0$00.00%−65,722−100.0%Sold out
Quantbot Technologies LP0$00.00%−56,026−100.0%Sold out
New York Life Investments Alternatives0$00.00%−48,682−100.0%Sold out
XTX Topco Ltd0$00.00%−34,413−100.0%Sold out
Walleye Trading LLC0$00.00%−33,324−100.0%Sold out
ExodusPoint Capital Management, LP0$00.00%−32,580−100.0%Sold out
Mesirow Financial Investment Management, Inc.0$00.00%−30,565−100.0%Sold out
Gsa Capital Partners LLP0$00.00%−19,412−100.0%Sold out
Wolverine Trading, LLC0$00.00%−13,593−100.0%Sold out
Principal Financial Group Inc0$00.00%−13,526−100.0%Sold out
Boothbay Fund Management, LLC0$00.00%−13,179−100.0%Sold out
Seelaus Asset Management LLC0$00.00%−10,155−100.0%Sold out
Macquarie Group Ltd0$00.00%−3,493−100.0%Sold out
Allspring Global Investments Holdings, LLC0$00.00%−4,521−100.0%Sold out
Hudock, Inc.0$00.00%−840−100.0%Sold out
Sandy Spring Bank0$00.00%−324−100.0%Sold out
Ellis Investment Partners, LLC0$00.00%−159−100.0%Sold out
Johnson Financial Group, Inc.0$00.00%−27−100.0%Sold out
Round Table Services, LLC––––Not filed
American Portfolios Advisors––––Not filed
Covington Capital Management––––Not filed
Wipfli Financial Advisors LLC,––––Not filed