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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, Q2 2025

Institutional positions in Magnite, Inc. as of Jun 30, 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
287
−4 vs. Q1 2025
Shares held
147.0M
+14.1M (+10.6%) vs. Q1 2025
Total value
$3.54B
+$2.03B (+133.7%) vs. Q1 2025
New holders
53
99 more added
Sold out
57
99 more reduced

2 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: 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 holdersQ2 2025: 287 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 heldQ2 2025: $3.54B
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, Q2 2025

Shares, value and share of portfolio for each institution holding Magnite, Inc.; share changes are against Q1 2025.

Institutions holding MGNI in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Franklin Resources Inc108,451$2.62M0.00%−19,059−14.9%Reduced
Wedge Capital Management L L P107,634$2.60M0.05%−17,532−14.0%Reduced
Group One Trading, L.P.107,089$2.58M0.08%+97,719+1,042.9%Added
Principal Financial Group Inc107,015$2.58M0.00%−17,532−14.1%Reduced
LPL Financial LLC106,547$2.57M0.00%−15,805−12.9%Reduced
Ameriprise Financial Inc106,264$2.56M0.00%−536,879−83.5%Reduced
Thrivent Financial for Lutherans102,904$2.48M0.01%00.0%Unchanged
Cerity Partners LLC101,741$2.45M0.00%+1,591+1.6%Added
Toroso Investments, LLC93,168$2.25M0.01%−36,107−27.9%Reduced
CenterBook Partners LP92,266$2.23M0.12%−224,738−70.9%Reduced
MetLife Investment Management83,541$2.02M0.01%+8,736+11.7%Added
Stephens Inc82,951$2.00M0.03%+14,079+20.4%Added
SEI Investments Co82,116$1.98M0.00%+42,353+106.5%Added
Stifel Financial Corp78,799$1.90M0.00%+24,504+45.1%Added
Mirae Asset Global ETFs Holdings Ltd.76,760$1.85M0.00%+1,913+2.6%Added
Intech Investment Management LLC73,371$1.77M0.02%−36,621−33.3%Reduced
Legato Capital Management LLC70,480$1.70M0.20%+27,160+62.7%Added
Panoramic Capital, LLC70,000$1.69M1.30%+70,000New
First Trust Advisors LP69,499$1.68M0.00%−254,411−78.5%Reduced
Manufacturers Life Insurance Company, The67,661$1.63M0.00%−5,602−7.6%Reduced
Pinnacle Associates Ltd67,020$1.62M0.02%+6,725+11.2%Added
PDT Partners, LLC63,448$1.53M0.09%+63,448New
Advisory Services Network, LLC65,407$1.51M0.02%−18,303−21.9%Reduced
Gamco Investors, Inc. Et Al59,583$1.44M0.01%−19,203−24.4%Reduced
Weiss Asset Management LP59,132$1.43M0.02%−395,996−87.0%Reduced
Ensign Peak Advisors, Inc58,508$1.41M0.00%−1,000−1.7%Reduced
Janus Henderson Group PLC58,423$1.41M0.00%00.0%Unchanged
Simplex Trading, LLC52,834$1.27M0.03%+52,834New
Calamos Advisors LLC52,710$1.27M0.01%−12,565−19.2%Reduced
Advisor Group Holdings, Inc.51,271$1.24M0.00%−50,616−49.7%Reduced
Radcliffe Capital Management, L.P.50,000$1.21M0.09%00.0%Unchanged
Dark Forest Capital Management LP49,304$1.19M0.05%−124,560−71.6%Reduced
Cardinal Point Capital Management, ULC49,100$1.18M0.09%−4,700−8.7%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)48,871$1.18M0.00%+4,882+11.1%Added
Royal Bank of Canada47,278$1.14M0.00%−100,990−68.1%Reduced
Boothbay Fund Management, LLC44,349$1.07M0.03%+44,349New
Great West Life Assurance Co43,505$1.05M0.00%+4,901+12.7%Added
Victory Capital Management Inc43,399$1.05M0.00%−77,933−64.2%Reduced
STRS Ohio42,200$1.02M0.00%−5,500−11.5%Reduced
Arizona State Retirement System41,670$1.01M0.01%+1,340+3.3%Added
SG Americas Securities, LLC41,378$998.0K0.00%+17,373+72.4%Added
Greenwood Capital Associates LLC40,175$969.0K0.12%−26,046−39.3%Reduced
Cetera Investment Advisers39,163$944.6K0.00%+5,342+15.8%Added
State Board of Administration of Florida Retirement System38,231$922.1K0.00%00.0%Unchanged
ExodusPoint Capital Management, LP35,727$862.0K0.01%+35,727New
Allspring Global Investments Holdings, LLC34,524$832.7K0.00%−10,423−23.2%Reduced
Bayesian Capital Management, LP33,800$815.3K0.13%+33,800New
Diametric Capital, LP33,159$799.8K0.43%+21,912+194.8%Added
D. E. Shaw & Co., Inc.31,947$770.6K0.00%+31,947New
Fulton Bank, N.A.31,935$770.3K0.03%−3,280−9.3%Reduced
Police & Firemen's Retirement System of New Jersey31,618$762.6K0.01%+4,886+18.3%Added
Handelsbanken Fonder AB30,100$726.0K0.00%00.0%Unchanged
KLP Kapitalforvaltning AS29,100$701.9K0.00%+4,500+18.3%Added
ProShare Advisors LLC28,718$692.7K0.00%+1,482+5.4%Added
Penbrook Management LLC28,420$685.5K0.52%−9,750−25.5%Reduced
Truist Financial Corp28,313$682.9K0.00%−7,327−20.6%Reduced
Pitcairn Co26,315$634.7K0.04%−10,813−29.1%Reduced
Verdence Capital Advisors LLC26,196$631.8K0.04%+1,426+5.8%Added
Walleye Capital LLC25,968$626.3K0.01%+25,968New
Clear Creek Financial Management, LLC24,463$590.0K0.06%+24,463New
Cambridge Investment Research Advisors, Inc.23,358$563.0K0.00%−28,457−54.9%Reduced
Pictet Asset Management Holding SA22,641$546.1K0.00%00.0%Unchanged
ARS Investment Partners, LLC22,500$542.7K0.04%+22,500New
Teacher Retirement System of Texas21,603$521.1K0.00%+1,164+5.7%Added
Evanson Asset Management, LLC21,171$510.6K0.03%00.0%Unchanged
AQR Capital Management LLC20,960$505.6K0.00%+6,785+47.9%Added
Outlook Wealth Advisors, LLC20,474$493.8K0.13%00.0%Unchanged
Johnson Investment Counsel Inc20,208$487.4K0.00%+5,299+35.5%Added
Griffin Asset Management, Inc.19,935$480.8K0.06%−10,820−35.2%Reduced
Ledgewood Wealth Advisors, LLC19,795$477.5K0.30%00.0%Unchanged
Quantinno Capital Management LP19,511$470.6K0.00%+19,511New
BNP Paribas Arbitrage, SA18,554$447.5K0.00%+4,309+30.2%Added
HSBC Holdings PLC18,040$437.4K0.00%−4,633−20.4%Reduced
Mount Yale Investment Advisors, LLC18,001$434.2K0.03%−4,453−19.8%Reduced
Vident Advisory, LLC17,846$430.4K0.00%−3,143−15.0%Reduced
CIBC World Markets Corp17,256$416.2K0.00%−10,662−38.2%Reduced
Centiva Capital, LP17,000$410.0K0.03%00.0%Unchanged
M&T Bank Corp16,595$400.7K0.00%−2,365−12.5%Reduced
Captrust Financial Advisors16,585$400.0K0.00%+1,838+12.5%Added
Tower Research Capital LLC (TRC)15,065$363.4K0.01%+11,943+382.5%Added
Public Employees Retirement Association of Colorado14,986$361.0K0.00%00.0%Unchanged
Prudential Financial Inc17,959$355.9K0.00%+17,959New
Woodmont Investment Counsel LLC14,300$344.9K0.02%−1,000−6.5%Reduced
Ameritas Investment Partners, Inc.14,299$344.9K0.01%+1,137+8.6%Added
1858 Wealth Management, LLC14,070$339.4K0.25%+1,465+11.6%Added
Winthrop Advisory Group LLC14,000$337.7K0.03%+600+4.5%Added
Amundi13,655$336.9K0.00%+1,364+11.1%Added
HighTower Advisors, LLC13,827$333.5K0.00%−28,444−67.3%Reduced
HCR Wealth Advisors13,000$313.6K0.04%00.0%Unchanged
Lazard Asset Management LLC12,729$306.0K0.00%−1,453−10.2%Reduced
Wolverine Trading, LLC14,275$301.2K0.01%−24,440−63.1%Reduced
Quest Partners LLC12,447$300.2K0.03%−6,630−34.8%Reduced
FDx Advisors, Inc.12,375$298.0K0.09%+2,265+22.4%Added
MML Investors Services, LLC12,124$292.0K0.00%−9,378−43.6%Reduced
Two Sigma Securities, LLC12,070$291.1K0.04%−12,585−51.0%Reduced
Parkside Financial Bank & Trust11,973$288.8K0.03%+283+2.4%Added
Blackhill Capital Inc11,622$280.3K0.02%00.0%Unchanged
Prudent Man Advisors, LLC11,360$274.0K0.09%+11,360New
1620 Investment Advisors, Inc.11,234$271.0K0.19%+4,230+60.4%Added
Creative Planning11,131$268.5K0.00%−6,587−37.2%Reduced