Skip to main content

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 2021

Institutional positions in Magnite, Inc. as of Dec 31, 2021. 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
248
−30 vs. Q3 2021
Shares held
89.6M
−532.7K (−0.6%) vs. Q3 2021
Total value
$1.57B
−$955.6M (−37.9%) vs. Q3 2021
New holders
43
91 more added
Sold out
73
78 more reduced

1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2021: 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 2021: 248 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 2021: $1.57B
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 2021

Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q3 2021.

Institutions holding MGNI in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Formula Growth Ltd56,430$988.0K0.18%−28,000−33.2%Reduced
Connacht Asset Management LP56,207$984.0K1.13%−6,269−10.0%Reduced
Price T Rowe Associates Inc53,389$934.0K0.00%−26,701−33.3%Reduced
B. Riley Asset Management, LLC52,774$924.0K0.49%+52,774New
Voya Investment Management LLC52,704$922.0K0.00%−238,891−81.9%Reduced
Walleye Trading LLC52,709$922.0K0.01%+47,052+831.7%Added
Man Group plc51,715$905.0K0.00%+24,814+92.2%Added
Friess Associates LLC50,596$885.0K0.35%−54,759−52.0%Reduced
CIBC World Markets Inc.50,146$878.0K0.00%−55,236−52.4%Reduced
Sphinx Trading, LP50,000$875.0K0.90%+25,000+100.0%Added
Ergoteles LLC45,652$799.0K0.03%+45,652New
Renaissance Group LLC45,084$789.0K0.03%−57−0.1%Reduced
MetLife Investment Management44,965$786.9K0.01%00.0%Unchanged
Jump Financial, LLC41,490$726.0K0.05%−10,387−20.0%Reduced
State Board of Administration of Florida Retirement System41,411$725.0K0.00%+967+2.4%Added
Verition Fund Management LLC36,364$636.0K0.01%−12,051−24.9%Reduced
Engineers Gate Manager LP35,051$613.0K0.03%−9,164−20.7%Reduced
Holocene Advisors, LP34,647$606.0K0.00%+34,647New
Arizona State Retirement System33,559$587.0K0.00%+214+0.6%Added
Metropolitan Life Insurance Co33,115$579.5K0.01%−905−2.7%Reduced
Los Angeles Capital Management LLC32,437$568.0K0.00%−608−1.8%Reduced
Twinbeech Capital LP32,352$566.0K0.03%−44,633−58.0%Reduced
Commonwealth Equity Services, LLC31,890$558.0K0.00%−30,720−49.1%Reduced
Stifel Financial Corp31,862$558.0K0.00%−8,211−20.5%Reduced
Concorde Asset Management, LLC31,883$558.0K0.34%+13,653+74.9%Added
Cutler Group LP30,307$530.0K0.04%+23,965+377.9%Added
ProShare Advisors LLC28,351$496.0K0.00%+11,707+70.3%Added
Virtu Financial LLC28,128$492.0K0.05%+561+2.0%Added
Blackhill Capital Inc27,615$483.0K0.04%00.0%Unchanged
SG Americas Securities, LLC26,773$469.0K0.00%−24,035−47.3%Reduced
Caption Management, LLC26,500$465.0K0.03%+26,500New
New York Life Investments Alternatives25,750$451.0K0.30%+25,750New
Alpha Paradigm Partners, LLC25,059$439.0K0.18%+25,059New
Oxbow Advisors, LLC24,900$436.0K0.04%+7,740+45.1%Added
Teacher Retirement System of Texas24,137$422.0K0.00%+4,775+24.7%Added
Congress Park Capital LLC23,640$414.0K0.20%+2,837+13.6%Added
LPL Financial LLC23,541$412.0K0.00%−19,952−45.9%Reduced
Perkins Capital Management Inc23,525$412.0K0.28%00.0%Unchanged
Valeo Financial Advisors, LLC23,170$405.0K0.02%+7,633+49.1%Added
Amalgamated Bank22,855$400.0K0.00%−203−0.9%Reduced
Victory Capital Management Inc22,738$398.0K0.00%−11,986−34.5%Reduced
Janus Henderson Group PLC22,387$392.0K0.00%+11,278+101.5%Added
B. Riley Wealth Management, Inc.22,352$391.0K0.03%+5,182+30.2%Added
Principal Financial Group Inc22,083$386.0K0.00%−5,150−18.9%Reduced
Handelsbanken Fonder AB22,000$385.0K0.00%00.0%Unchanged
Evanson Asset Management, LLC21,802$382.0K0.03%−90−0.4%Reduced
Envestnet Asset Management Inc21,481$376.0K0.00%−10,733−33.3%Reduced
Exchange Traded Concepts, LLC21,401$375.0K0.01%−1,201−5.3%Reduced
Advisor Group Holdings, Inc.21,026$368.0K0.00%−3,285−13.5%Reduced
Cambridge Investment Research Advisors, Inc.19,849$347.0K0.00%+608+3.2%Added
Natixis19,000$332.0K0.00%+19,000New
Leonteq Securities AG18,933$331.3K0.01%−4,397−18.8%Reduced
Qube Research & Technologies Ltd18,874$330.0K0.00%+18,874New
Cresset Asset Management, LLC18,406$322.0K0.00%+4,813+35.4%Added
Shay Capital LLC17,801$312.0K0.12%−7,247−28.9%Reduced
Banque Cantonale Vaudoise17,581$307.0K0.01%+3,407+24.0%Added
Graham Capital Management, L.P.16,213$283.0K0.02%+16,213New
Gsa Capital Partners LLP15,821$277.0K0.03%+15,821New
Pearl River Capital, LLC15,759$276.0K0.07%+474+3.1%Added
Ensign Peak Advisors, Inc15,630$274.0K0.00%+15,630New
Zurcher Kantonalbank (Zurich Cantonalbank)15,374$269.0K0.00%+4,294+38.8%Added
Public Employees Retirement Association of Colorado14,986$262.0K0.00%00.0%Unchanged
Diametric Capital, LP14,802$259.0K0.20%+14,802New
Raymond James & Associates14,644$256.0K0.00%+1,284+9.6%Added
Quadrature Capital Ltd13,855$242.0K0.01%−3,042−18.0%Reduced
Campbell & CO Investment Adviser LLC13,700$240.0K0.08%+13,700New
Truist Financial Corp13,669$239.0K0.00%−3,201−19.0%Reduced
Tower Research Capital LLC (TRC)13,686$239.0K0.00%+5,997+78.0%Added
CastleKnight Management LP12,100$212.0K0.08%+12,100New
Seelaus Asset Management LLC11,305$198.0K0.11%00.0%Unchanged
First National Bank11,265$197.0K0.17%−2,000−15.1%Reduced
Wolverine Trading, LLC10,941$196.0K0.00%+10,941New
Silvant Capital Management LLC11,104$194.0K0.03%−714−6.0%Reduced
Gabelli Funds LLC10,820$189.0K0.00%00.0%Unchanged
Kestra Advisory Services, LLC10,519$184.0K0.00%−2,568−19.6%Reduced
Bollard Group LLC10,216$179.0K0.01%00.0%Unchanged
NEXT Financial Group, Inc10,256$179.0K0.01%+756+8.0%Added
Prudential Financial Inc10,012$175.0K0.00%−885−8.1%Reduced
Ameritas Investment Partners, Inc.9,955$174.0K0.01%00.0%Unchanged
Point72 Hong Kong Ltd9,440$165.0K0.01%−1,739−15.6%Reduced
Lazard Asset Management LLC9,280$162.0K0.00%+9,280New
SG3 Management, LLC8,500$149.0K0.02%+8,500New
Amundi8,065$122.0K0.00%00.0%Unchanged
Whittier Trust Co of Nevada Inc6,842$120.0K0.00%00.0%Unchanged
Sugarloaf Wealth Management, LLC6,182$108.0K0.03%−200−3.1%Reduced
Great West Life Assurance Co6,005$105.0K0.00%00.0%Unchanged
Newbridge Financial Services Group, Inc.5,500$96.0K0.05%00.0%Unchanged
Macquarie Group Ltd4,638$81.0K0.00%+89+2.0%Added
Shell Asset Management Co4,295$75.0K0.00%−71−1.6%Reduced
Nisa Investment Advisors, LLC4,570$62.0K0.00%−1,530−25.1%Reduced
Whittier Trust Co3,320$58.0K0.00%00.0%Unchanged
STRS Ohio3,200$56.0K0.00%−91,900−96.6%Reduced
Northwestern Mutual Wealth Management Co3,025$53.0K0.00%+12+0.4%Added
Baldwin Brothers Inc3,000$53.0K0.01%+295+10.9%Added
The PNC Financial Services Group, Inc.2,848$50.0K0.00%−51−1.8%Reduced
Captrust Financial Advisors2,537$44.0K0.00%−52−2.0%Reduced
Rockefeller Capital Management L.P.2,386$40.0K0.00%−174−6.8%Reduced
Guinness Atkinson Asset Management Inc2,230$39.0K0.02%00.0%Unchanged
Cambridge Trust Co1,900$33.0K0.00%+1,900New
IFP Advisors, Inc1,800$32.0K0.00%00.0%Unchanged