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NASDAQ: MGNI
Magnite Inc Stock Ownership - Who owns Magnite?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Magnite Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Paul CaineDirector2025-09-101,189$23.91
$28.43kSell
Paul CaineDirector2025-09-103,811$23.50
$89.56kSell
Sean Patrick BuckleyPresident Revenue2025-09-0920,000$24.61
$492.20kSell
Sean Patrick BuckleyPresident Revenue2025-09-0820,000$25.56
$511.20kSell
Brian GephartCHIEF ACCOUNTING OFFICER2025-09-0427,671$24.71
$683.75kSell
David BuonaseraCHIEF TECHNOLOGY OFFICER2025-09-032,950$25.37
$74.84kSell
Adam Lee SorocaCHIEF PRODUCT OFFICER2025-09-029,269$24.22
$224.50kSell
Adam Lee SorocaCHIEF PRODUCT OFFICER2025-09-0224,986$4.92
$122.93kBuy
Adam Lee SorocaCHIEF PRODUCT OFFICER2025-09-0215,717$24.97
$392.45kSell
Aaron SaltzCHIEF LEGAL OFFICER2025-08-2912,403$26.07
$323.35kSell

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Net Insider Buy/Sell (L12M) Ownership

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MGNI Shareholders

What type of owners hold Magnite Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Fmr LLC12.07%17,185,939$410.23MInstitution
Sumant Mandal12.01%17,102,338$408.23MInsider
Vanguard Group Inc9.52%13,562,285$323.73MInstitution
Capital Research Global Investors9.07%12,920,070$308.40MInstitution
Blackrock Inc7.51%10,698,044$255.36MInstitution
Boston Partners3.91%5,574,604$133.07MInstitution
Clearstone Venture Partners Iiia LP3.91%5,570,406$132.97MInsider
Wellington Management Group LLP3.83%5,447,837$130.04MInstitution
Dimensional Fund Advisors LP3.44%4,901,833$117.01MInstitution
American Century Companies Inc3.39%4,829,197$115.27MInstitution

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MGNI vs Advertising Agency Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MGNI78.80%21.20%Net SellingNet Selling
ZD92.42%7.58%Net SellingNet Buying
CMPR33.13%66.87%Net SellingNet Selling
IAS64.32%35.68%Net SellingNet Selling
STGW18.06%81.94%Net BuyingNet Buying
View Top Advertising Agency Stocks

Magnite Stock Ownership FAQ

Who owns Magnite?

Magnite (NASDAQ: MGNI) is owned by 103.23% institutional shareholders, 27.77% Magnite insiders, and 0.00% retail investors. Sumant Mandal is the largest individual Magnite shareholder, owning 17.10M shares representing 12.01% of the company. Sumant Mandal's Magnite shares are currently valued at $405.84M.

If you're new to stock investing, here's how to buy Magnite stock.
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