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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
Michael G. BarrettCEO2026-07-1538,596$20.35
$785.43kSell
Michael G. BarrettCEO2026-07-1538,596$5.80
$223.86kBuy
Paul CaineDirector2026-07-105,000$20.64
$103.20kSell
Sean Patrick BuckleyPresident Revenue Market Strategy2026-07-0719,233$21.03
$404.47kSell
David BuonaseraCHIEF TECHNOLOGY OFFICER2026-07-071,224$21.00
$25.70kSell
David BuonaseraCHIEF TECHNOLOGY OFFICER2026-07-019,376$20.00
$187.52kSell
Michael G. BarrettCEO2026-06-2975,000$19.50
$1.46MSell
Michael G. BarrettCEO2026-06-2975,000$5.80
$435.00kBuy
Sean Patrick BuckleyPresident Revenue Market Strategy2026-06-1719,233$19.00
$365.43kSell
David BuonaseraCHIEF TECHNOLOGY OFFICER2026-06-171,409$19.00
$26.77kSell

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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
Sumant Mandal11.94%17,102,338$324.94MInsider
Blackrock Inc8.14%11,657,496$221.49MInstitution
Wellington Management Group LLP6.42%9,191,077$174.63MInstitution
Vanguard Portfolio Management LLC5.39%7,726,205$146.80MInstitution
Vanguard Capital Management LLC4.32%6,190,403$117.62MInstitution
Clearstone Venture Partners Iiia LP3.89%5,570,406$105.84MInsider
Capital Research Global Investors3.51%5,020,289$95.39MInstitution
News Corp3.31%4,746,349$90.18MInsider
Boston Partners3.30%4,719,863$89.68MInstitution
American Century Companies Inc3.23%4,626,816$87.91MInstitution

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MGNI vs Advertising Agency Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MGNI76.63%23.37%Net SellingNet Selling
CMPR33.85%66.15%Net SellingNet Selling
QMMM1.09%0.00%
ZD92.05%7.95%Net SellingNet Buying
STGW19.84%80.16%Net SellingNet Selling
View Top Advertising Agency Stocks

Magnite Stock Ownership FAQ

Who owns Magnite?

Magnite (NASDAQ: MGNI) is owned by 91.87% institutional shareholders, 28.01% Magnite insiders, and 0.00% retail investors. Sumant Mandal is the largest individual Magnite shareholder, owning 17.10M shares representing 11.94% of the company. Sumant Mandal's Magnite shares are currently valued at $324.94M.

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