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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, Q3 2021

Institutional positions in Magnite, Inc. as of Sep 30, 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
279
+15 vs. Q2 2021
Shares held
90.1M
+4.77M (+5.6%) vs. Q2 2021
Total value
$2.52B
−$365.5M (−12.7%) vs. Q2 2021
New holders
55
97 more added
Sold out
40
73 more reduced

4 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2021: 279 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 heldQ3 2021: $2.52B
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, Q3 2021

Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q2 2021.

Institutions holding MGNI in Q3 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Commonwealth Equity Services, LLC62,610$1.75M0.00%+2,260+3.7%Added
Connacht Asset Management LP62,476$1.75M2.00%+9,330+17.6%Added
TCW Group Inc61,261$1.72M0.02%−3,345−5.2%Reduced
Royal Bank of Canada60,176$1.69M0.00%−52,332−46.5%Reduced
UBS Group AG59,233$1.66M0.00%−160,167−73.0%Reduced
Cubist Systematic Strategies, LLC57,847$1.62M0.02%−110,527−65.6%Reduced
Mutual of America Capital Management LLC55,856$1.56M0.02%−805−1.4%Reduced
Greenwood Capital Associates LLC55,340$1.55M0.24%+789+1.4%Added
Calamos Advisors LLC52,468$1.47M0.01%−112,804−68.3%Reduced
Jump Financial, LLC51,877$1.45M0.10%−19,823−27.6%Reduced
NN Investment Partners Holdings N.V.50,800$1.42M0.01%−500−1.0%Reduced
SG Americas Securities, LLC50,808$1.42M0.01%+45,030+779.3%Added
Verition Fund Management LLC48,415$1.36M0.02%+34,460+246.9%Added
Renaissance Group LLC45,141$1.26M0.05%+45,141New
Cannon Global Investment Management, LLC45,000$1.26M1.89%+45,000New
MetLife Investment Management44,965$1.26M0.01%+7,905+21.3%Added
Engineers Gate Manager LP44,215$1.24M0.07%+44,215New
LPL Financial LLC43,493$1.22M0.00%+8,171+23.1%Added
State Board of Administration of Florida Retirement System40,444$1.13M0.00%+240+0.6%Added
Stifel Financial Corp40,073$1.12M0.00%+7,796+24.2%Added
G2 Investment Partners Management LLC40,000$1.12M0.19%+14,000+53.8%Added
1492 Capital Management LLC37,521$1.05M0.54%+37,521New
Healthcare of Ontario Pension Plan Trust Fund36,000$1.01M0.00%−55,104−60.5%Reduced
Victory Capital Management Inc34,724$972.0K0.00%+4,726+15.8%Added
Boothbay Fund Management, LLC34,397$963.0K0.04%+3,697+12.0%Added
Metropolitan Life Insurance Co34,020$952.6K0.01%+5,493+19.3%Added
Arizona State Retirement System33,345$934.0K0.01%+3,501+11.7%Added
AQR Capital Management LLC33,265$931.0K0.00%+5,252+18.7%Added
Los Angeles Capital Management LLC33,045$925.0K0.00%−2,075−5.9%Reduced
Envestnet Asset Management Inc32,214$902.0K0.00%+12,483+63.3%Added
Oppenheimer & Co Inc32,200$902.0K0.02%+32,200New
Paloma Partners Management Co29,652$831.0K0.04%−53,477−64.3%Reduced
Evanson Asset Management, LLC21,892$808.0K0.08%00.0%Unchanged
Blackhill Capital Inc27,615$773.0K0.07%00.0%Unchanged
Virtu Financial LLC27,567$772.0K0.07%+27,567New
Principal Financial Group Inc27,233$763.0K0.00%+10,438+62.1%Added
Man Group plc26,901$754.0K0.00%+16,924+169.6%Added
Shay Capital LLC25,048$701.0K0.22%+20,048+401.0%Added
Sphinx Trading, LP25,000$700.0K0.93%+25,000New
Advisor Group Holdings, Inc.24,311$683.0K0.00%−1,320−5.2%Reduced
First Trust Advisors LP23,754$665.0K0.00%−93,980−79.8%Reduced
Perkins Capital Management Inc23,525$659.0K0.41%00.0%Unchanged
Prelude Capital Management, LLC23,412$656.0K0.04%−22,029−48.5%Reduced
Leonteq Securities AG23,330$653.2K0.04%−483−2.0%Reduced
Amalgamated Bank23,058$646.0K0.01%+3,221+16.2%Added
SEI Investments Co22,696$633.0K0.00%−101,839−81.8%Reduced
Exchange Traded Concepts, LLC22,602$633.0K0.02%−706−3.0%Reduced
Handelsbanken Fonder AB22,000$616.0K0.00%00.0%Unchanged
Stony Point Wealth Management Inc.21,888$613.0K0.37%+21,888New
Seven Eight Capital, LP21,373$598.0K0.06%+11,900+125.6%Added
Congress Park Capital LLC20,803$582.0K0.30%−17,625−45.9%Reduced
First Republic Investment Management, Inc.20,726$580.0K0.00%+20,726New
Teacher Retirement System of Texas19,362$542.0K0.00%+6,133+46.4%Added
Cambridge Investment Research Advisors, Inc.19,241$539.0K0.00%−7,609−28.3%Reduced
Kamunting Street Capital Management, L.P.18,767$525.0K0.29%+18,767New
Concorde Asset Management, LLC18,230$510.0K0.29%+18,230New
B. Riley Wealth Management, Inc.17,170$481.0K0.04%+1,123+7.0%Added
Oxbow Advisors, LLC17,160$480.0K0.05%+1,800+11.7%Added
Quadrature Capital Ltd16,897$473.0K0.02%−55,060−76.5%Reduced
Truist Financial Corp16,870$472.0K0.00%−6,295−27.2%Reduced
Two Sigma Securities, LLC16,815$471.0K0.10%+16,815New
ProShare Advisors LLC16,644$466.0K0.00%−1,201,005−98.6%Reduced
Valeo Financial Advisors, LLC15,537$435.0K0.03%00.0%Unchanged
Pearl River Capital, LLC15,285$428.0K0.12%+15,285New
Public Employees Retirement Association of Colorado14,986$420.0K0.00%00.0%Unchanged
Dynamic Technology Lab Private Ltd14,600$409.0K0.05%−20,873−58.8%Reduced
Banque Cantonale Vaudoise14,174$397.0K0.02%−496−3.4%Reduced
Cresset Asset Management, LLC13,593$380.0K0.01%−901−6.2%Reduced
Raymond James & Associates13,360$374.0K0.00%−1,597−10.7%Reduced
First National Bank13,265$371.0K0.35%+13,265New
Blueshift Asset Management, LLC13,144$368.0K0.02%−38,491−74.5%Reduced
PDT Partners, LLC13,125$368.0K0.03%−8,714−39.9%Reduced
Kestra Advisory Services, LLC13,087$366.0K0.00%+6,793+107.9%Added
Wedbush Securities Inc12,363$346.0K0.02%+2,250+22.2%Added
Algert Global LLC11,964$335.0K0.04%+11,964New
Cerity Partners LLC11,848$332.0K0.01%00.0%Unchanged
Silvant Capital Management LLC11,818$331.0K0.06%−9,379−44.2%Reduced
Resolute Partners Group11,500$322.0K0.04%00.0%Unchanged
Seelaus Asset Management LLC11,305$317.0K0.19%+11,305New
Point72 Hong Kong Ltd11,179$313.0K0.02%+11,179New
Janus Henderson Group PLC11,109$311.0K0.00%+11,109New
Zurcher Kantonalbank (Zurich Cantonalbank)11,080$310.0K0.00%00.0%Unchanged
Prudential Financial Inc10,897$305.0K0.00%+2,210+25.4%Added
Gabelli Funds LLC10,820$303.0K0.00%00.0%Unchanged
Bollard Group LLC10,216$286.0K0.01%00.0%Unchanged
Golden Green, Inc.10,171$285.0K0.22%−184−1.8%Reduced
Tocqueville Asset Management L.P.10,000$280.0K0.00%00.0%Unchanged
Ameritas Investment Partners, Inc.9,955$279.0K0.01%+1,719+20.9%Added
NEXT Financial Group, Inc9,500$266.0K0.02%+928+10.8%Added
Creative Planning9,327$261.0K0.00%−3,968−29.8%Reduced
Essex Investment Management Co LLC9,049$253.0K0.03%+9,049New
PEAK6 Investments LLC8,792$246.0K0.00%−34,361−79.6%Reduced
TownSquare Capital, LLC8,663$243.0K0.01%+8,663New
V Wealth Advisors LLC8,500$238.0K0.04%00.0%Unchanged
Pictet Asset Management SA8,300$232.0K0.00%+8,300New
Weil Company, Inc.8,104$227.0K0.12%+8,104New
Amundi8,065$226.0K0.00%+8,065New
Gluskin Sheff & Assoc Inc8,021$225.0K0.01%+8,021New
Aigen Investment Management, LP7,864$220.0K0.04%+7,864New
Tower Research Capital LLC (TRC)7,689$216.0K0.01%+4,785+164.8%Added