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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, Q1 2025

Institutional positions in Magnite, Inc. as of Mar 31, 2025. 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
293
+10 vs. Q4 2024
Shares held
132.9M
+13.4M (+11.2%) vs. Q4 2024
Total value
$1.52B
−$386.8M (−20.3%) vs. Q4 2024
New holders
52
104 more added
Sold out
42
97 more reduced

3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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 holdersQ1 2025: 293 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 heldQ1 2025: $1.52B
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, Q1 2025

Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q4 2024.

Institutions holding MGNI in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
State of New Jersey Common Pension Fund D109,356$1.25M0.01%+109,356New
Moody National Bank Trust Division104,190$1.19M0.12%−6,088−5.5%Reduced
PEAK6 LLC103,167$1.18M0.05%+103,167New
Thrivent Financial for Lutherans102,904$1.17M0.00%−270.0%Reduced
Advisor Group Holdings, Inc.101,887$1.16M0.00%+49,995+96.3%Added
Cerity Partners LLC100,150$1.14M0.00%−394−0.4%Reduced
Price T Rowe Associates Inc99,041$1.13M0.00%+4,148+4.4%Added
Wells Fargo & Company93,929$1.07M0.00%−134,089−58.8%Reduced
Riverwater Partners LLC84,179$960.5K0.49%+100.0%Added
Advisory Services Network, LLC83,710$955.1K0.02%−43,832−34.4%Reduced
Atlas Merchant Capital LLC82,500$941.3K2.36%00.0%Unchanged
Gamco Investors, Inc. Et Al78,786$898.9K0.01%−5,846−6.9%Reduced
Fox Run Management, L.L.C.77,223$881.1K0.14%+77,223New
Mirae Asset Global ETFs Holdings Ltd.74,847$854.0K0.00%+3,267+4.6%Added
MetLife Investment Management74,805$853.5K0.00%−1,188−1.6%Reduced
Manufacturers Life Insurance Company, The73,263$835.9K0.00%+1,478+2.1%Added
Stephens Inc68,872$785.8K0.01%−500−0.7%Reduced
Greenwood Capital Associates LLC66,221$755.6K0.10%+1,852+2.9%Added
CIBC World Markets Inc.65,543$747.8K0.00%+65,543New
Calamos Advisors LLC65,275$744.8K0.00%+30,132+85.7%Added
Corebridge Financial, Inc.61,638$703.3K0.00%−914−1.5%Reduced
Pinnacle Associates Ltd60,295$688.0K0.01%−271,666−81.8%Reduced
Ensign Peak Advisors, Inc59,508$679.0K0.00%00.0%Unchanged
Janus Henderson Group PLC58,423$677.4K0.00%00.0%Unchanged
Stifel Financial Corp54,295$619.5K0.00%−1,827−3.3%Reduced
Cardinal Point Capital Management, ULC53,800$613.9K0.06%+53,800New
Two Sigma Investments, LP53,552$611.0K0.00%−44,450−45.4%Reduced
Cambridge Investment Research Advisors, Inc.51,815$591.0K0.00%+22,131+74.6%Added
Radcliffe Capital Management, L.P.50,000$570.5K0.06%+50,000New
STRS Ohio47,700$544.3K0.00%+16,100+50.9%Added
Allspring Global Investments Holdings, LLC44,947$512.8K0.00%+15,762+54.0%Added
Zurcher Kantonalbank (Zurich Cantonalbank)43,989$501.9K0.00%+11,827+36.8%Added
Legato Capital Management LLC43,320$494.3K0.07%−4,803−10.0%Reduced
HighTower Advisors, LLC42,271$482.3K0.00%+21,720+105.7%Added
Arizona State Retirement System40,330$460.2K0.00%+3,484+9.5%Added
SEI Investments Co39,763$453.7K0.00%−6,406−13.9%Reduced
IMC-Chicago, LLC39,631$452.2K0.02%−36,779−48.1%Reduced
Wolverine Trading, LLC38,715$448.9K0.01%−5,823−13.1%Reduced
Great West Life Assurance Co38,604$441.0K0.00%+6,594+20.6%Added
State Board of Administration of Florida Retirement System38,231$436.2K0.00%00.0%Unchanged
Penbrook Management LLC38,170$435.5K0.33%−310−0.8%Reduced
Pitcairn Co37,128$423.6K0.03%+4,605+14.2%Added
Sanctuary Advisors, LLC36,998$422.1K0.00%+17,837+93.1%Added
Truist Financial Corp35,640$406.7K0.00%+1,398+4.1%Added
Fulton Bank, N.A.35,215$401.8K0.02%−737−2.0%Reduced
Cetera Investment Advisers33,821$385.9K0.00%+10,089+42.5%Added
Comerica Bank33,451$381.7K0.00%+514+1.6%Added
Massar Capital Management, LP32,144$366.8K0.44%+32,144New
Griffin Asset Management, Inc.30,755$350.9K0.04%00.0%Unchanged
Handelsbanken Fonder AB30,100$343.0K0.00%00.0%Unchanged
Oppenheimer & Co Inc27,925$318.6K0.00%+27,925New
CIBC World Markets Corp27,918$318.5K0.00%+16,144+137.1%Added
ProShare Advisors LLC27,236$310.8K0.00%−8,196−23.1%Reduced
Police & Firemen's Retirement System of New Jersey26,732$305.0K0.00%00.0%Unchanged
Brown Advisory Inc25,409$289.9K0.00%+25,409New
Verdence Capital Advisors LLC24,770$282.6K0.02%+5,748+30.2%Added
Two Sigma Securities, LLC24,655$281.3K0.04%+24,655New
KLP Kapitalforvaltning AS24,600$280.7K0.00%−3,200−11.5%Reduced
SG Americas Securities, LLC24,005$274.0K0.00%+24,005New
Scientech Research LLC23,901$272.7K0.07%+23,901New
Pictet Asset Management Holding SA22,641$258.3K0.00%+2,238+11.0%Added
HSBC Holdings PLC22,673$257.1K0.00%−45,046−66.5%Reduced
Mount Yale Investment Advisors, LLC22,454$256.2K0.02%−2,923−11.5%Reduced
Antipodes Partners Ltd22,339$254.9K0.01%+14,267+176.7%Added
MML Investors Services, LLC21,502$245.0K0.00%+21,502New
Evanson Asset Management, LLC21,171$241.6K0.02%00.0%Unchanged
Vident Advisory, LLC20,989$239.5K0.00%+487+2.4%Added
Outlook Wealth Advisors, LLC20,474$233.6K0.06%−114−0.6%Reduced
Teacher Retirement System of Texas20,439$233.2K0.00%+20,439New
Ledgewood Wealth Advisors, LLC19,795$225.9K0.15%00.0%Unchanged
Jacobs Levy Equity Management, Inc19,634$224.0K0.00%−119,025−85.8%Reduced
Axq Capital, LP19,092$217.8K0.09%+19,092New
Quest Partners LLC19,077$217.7K0.02%+9,073+90.7%Added
M&T Bank Corp18,960$216.0K0.00%+4,537+31.5%Added
Bayforest Capital Ltd17,835$203.5K0.09%+15,318+608.6%Added
Creative Planning17,718$202.2K0.00%+2,471+16.2%Added
Centiva Capital, LP17,000$194.0K0.01%+17,000New
Contravisory Investment Management, Inc.16,932$193.2K0.04%+16,932New
CenterStar Asset Management, LLC16,800$191.6K0.28%+16,800New
Kestra Advisory Services, LLC16,375$186.8K0.00%+16,375New
Options Solutions, LLC16,287$185.8K0.09%−15,548−48.8%Reduced
Kapitalo Investimentos Ltda15,975$182.3K0.04%+15,975New
Woodmont Investment Counsel LLC15,300$174.6K0.01%−50−0.3%Reduced
Public Employees Retirement Association of Colorado14,986$171.0K0.00%00.0%Unchanged
Prelude Capital Management, LLC14,978$170.9K0.02%+14,978New
Johnson Investment Counsel Inc14,909$170.1K0.00%−7,059−32.1%Reduced
Captrust Financial Advisors14,747$168.3K0.00%−3,565−19.5%Reduced
BNP Paribas Arbitrage, SA14,245$162.5K0.00%−16,694−54.0%Reduced
AQR Capital Management LLC14,175$161.7K0.00%−2,853−16.8%Reduced
Lazard Asset Management LLC14,182$160.0K0.00%−573−3.9%Reduced
Aigen Investment Management, LP13,535$154.4K0.02%+13,535New
Marshall Wace, LLP13,468$153.7K0.00%−783,526−98.3%Reduced
Winthrop Advisory Group LLC13,400$152.9K0.02%+200+1.5%Added
Ameritas Investment Partners, Inc.13,162$150.2K0.01%00.0%Unchanged
HCR Wealth Advisors13,000$148.3K0.02%00.0%Unchanged
Shell Asset Management Co12,936$148.0K0.01%+10,937+547.1%Added
1858 Wealth Management, LLC12,605$143.8K0.12%+12,605New
Parkside Financial Bank & Trust11,690$133.4K0.02%+1,804+18.2%Added
Blackhill Capital Inc11,622$132.6K0.01%00.0%Unchanged
Diametric Capital, LP11,247$128.3K0.15%−3,974−26.1%Reduced