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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 26 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
Ancora Advisors, LLC11$2650.00%+11New
DHJJ Financial Advisors, Ltd.13$3140.00%00.0%Unchanged
Assetmark, Inc18$4340.00%+18New
Tradewinds Capital Management, LLC20$4830.00%00.0%Unchanged
TD Waterhouse Canada Inc.25$6030.00%+25New
Federation des caisses Desjardins du Quebec40$9650.00%−18−31.0%Reduced
HM Payson & Co40$9650.00%00.0%Unchanged
Steward Partners Investment Advisory, LLC40$9650.00%+40New
Avion Wealth49$1.00K0.00%+49New
Hughes Financial Services, LLC51$1.15K0.00%+51New
Glen Eagle Advisors, LLC49$1.18K0.00%00.0%Unchanged
CIBC Private Wealth Group, LLC51$1.23K0.00%−87−63.0%Reduced
Duncker Streett & Co Inc52$1.25K0.00%00.0%Unchanged
Principal Securities, Inc.62$1.50K0.00%−113−64.6%Reduced
ORG Partners LLC65$1.57K0.00%+65New
Leonteq Securities AG96$2.32K0.00%−3,835−97.6%Reduced
McIlrath & Eck, LLC100$2.41K0.00%−60−37.5%Reduced
South State Corp.100$2.41K0.00%00.0%Unchanged
Bruce G. Allen Investments, LLC121$2.92K0.00%+3+2.5%Added
Bryn Mawr Trust Co152$3.67K0.00%00.0%Unchanged
Abound Wealth Management176$4.25K0.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC182$4.39K0.00%+47+34.8%Added
NVWM, LLC200$4.82K0.00%+200New
Pineridge Advisors LLC206$4.97K0.00%+57+38.3%Added
Colonial Trust Co253$5.34K0.00%−141−35.8%Reduced
Richard W. Paul & Associates, LLC248$5.98K0.00%+51+25.9%Added
Rothschild Investment LLC270$6.51K0.00%+25+10.2%Added
Park Square Financial Group, LLC272$6.56K0.00%+57+26.5%Added
Sterling Capital Management LLC338$8.15K0.00%−15−4.2%Reduced
Parallel Advisors, LLC366$8.83K0.00%−97−21.0%Reduced
IFP Advisors, Inc0$8.90K0.00%−6−100.0%Reduced
EverSource Wealth Advisors, LLC416$10.0K0.00%−15−3.5%Reduced
Bessemer Group Inc462$11.0K0.00%+462New
Allworth Financial LP548$13.2K0.00%+279+103.7%Added
Fortitude Family Office, LLC566$13.7K0.00%00.0%Unchanged
Optiver Holding B.V.592$14.3K0.00%00.0%Unchanged
Raleigh Capital Management Inc.652$15.7K0.01%+201+44.6%Added
Evelyn Partners Investment Management Services Ltd703$17.0K0.00%00.0%Unchanged
Larson Financial Group LLC794$19.2K0.00%−5,314−87.0%Reduced
US Bancorp908$21.9K0.00%−258−22.1%Reduced
Umb Bank N A916$22.1K0.00%00.0%Unchanged
Versant Capital Management, Inc1,085$26.2K0.00%−361−25.0%Reduced
Banque Cantonale Vaudoise1,369$33.0K0.00%00.0%Unchanged
SBI Securities Co., Ltd.1,395$33.6K0.00%−9−0.6%Reduced
NBC Securities, Inc.1,445$34.0K0.00%+17+1.2%Added
HighMark Wealth Management LLC1,500$36.2K0.02%00.0%Unchanged
GAMMA Investing LLC1,517$36.6K0.00%+1,184+355.6%Added
MAI Capital Management1,594$38.4K0.00%00.0%Unchanged
The PNC Financial Services Group, Inc.1,673$40.4K0.00%+47+2.9%Added
CWM, LLC1,775$43.0K0.00%+1,015+133.6%Added
Signaturefd, LLC2,021$48.7K0.00%+353+21.2%Added
Huntington National Bank2,113$51.0K0.00%−197−8.5%Reduced
MCF Advisors LLC2,200$53.1K0.00%00.0%Unchanged
MTM Investment Management, LLC2,396$57.8K0.02%+2,396New
Strategic Wealth Partners, Ltd.2,422$58.4K0.00%+2,422New
Covestor Ltd2,640$64.0K0.04%+221+9.1%Added
Nisa Investment Advisors, LLC2,780$67.1K0.00%+1,105+66.0%Added
Clearstead Advisors, LLC2,808$67.7K0.00%+2,598+1,237.1%Added
Smartleaf Asset Management LLC3,387$71.5K0.01%+577+20.5%Added
Northwestern Mutual Wealth Management Co3,000$72.4K0.00%00.0%Unchanged
Skopos Labs, Inc.3,070$74.0K0.01%+3,070New
Global Retirement Partners, LLC3,280$79.1K0.00%+3,280New
Aster Capital Management (DIFC) Ltd3,813$92.0K0.02%−3,609−48.6%Reduced
Amalgamated Bank4,336$105.0K0.00%00.0%Unchanged
KBC Group NV4,480$108.0K0.00%−1,463−24.6%Reduced
AllSquare Wealth Management LLC5,282$127.4K0.07%+1,702+47.5%Added
Jones Financial Companies LLLP6,226$131.4K0.00%−4,091−39.7%Reduced
Smithfield Trust Co5,930$143.0K0.01%00.0%Unchanged
Farther Finance Advisors, LLC6,460$155.8K0.00%−183−2.8%Reduced
Northwest & Ethical Investments L.P.8,700$183.6K0.00%+8,700New
FNY Investment Advisers, LLC7,862$189.0K0.08%+7,862New
Murphy & Mullick Capital Management Corp8,285$199.2K0.16%+1,000+13.7%Added
GWN Securities Inc.8,496$205.3K0.04%+8,496New
Mackenzie Financial Corp8,590$207.2K0.00%+8,590New
Brinker Capital Investments, LLC8,602$207.5K0.00%−2,071−19.4%Reduced
Kestra Private Wealth Services, LLC8,873$214.0K0.00%+8,873New
Benjamin Edwards Inc8,975$216.5K0.00%+8,975New
Antipodes Partners Ltd9,162$221.0K0.01%−13,177−59.0%Reduced
Voya Financial Advisors, Inc.10,686$225.5K0.02%+10,686New
Marex Group plc9,402$226.8K0.00%+9,402New
Mairs & Power Inc10,000$241.2K0.00%+10,000New
Shell Asset Management Co10,187$246.0K0.01%−2,749−21.3%Reduced
Wealth Enhancement Advisory Services, LLC10,405$255.2K0.00%+10,405New
Gabelli Funds LLC10,820$261.0K0.00%00.0%Unchanged
Xponance, Inc.10,919$263.4K0.00%+10,919New
Cornerstone Wealth Management, LLC10,920$263.4K0.02%00.0%Unchanged
Massar Capital Management, LP11,000$265.3K0.20%−21,144−65.8%Reduced
Creative Planning11,131$268.5K0.00%−6,587−37.2%Reduced
1620 Investment Advisors, Inc.11,234$271.0K0.19%+4,230+60.4%Added
Prudent Man Advisors, LLC11,360$274.0K0.09%+11,360New
Blackhill Capital Inc11,622$280.3K0.02%00.0%Unchanged
Parkside Financial Bank & Trust11,973$288.8K0.03%+283+2.4%Added
Two Sigma Securities, LLC12,070$291.1K0.04%−12,585−51.0%Reduced
MML Investors Services, LLC12,124$292.0K0.00%−9,378−43.6%Reduced
FDx Advisors, Inc.12,375$298.0K0.09%+2,265+22.4%Added
Quest Partners LLC12,447$300.2K0.03%−6,630−34.8%Reduced
Wolverine Trading, LLC14,275$301.2K0.01%−24,440−63.1%Reduced
Lazard Asset Management LLC12,729$306.0K0.00%−1,453−10.2%Reduced
HCR Wealth Advisors13,000$313.6K0.04%00.0%Unchanged
HighTower Advisors, LLC13,827$333.5K0.00%−28,444−67.3%Reduced