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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
Sean Patrick BuckleyPresident Revenue Market Strategy2026-06-1719,233$19.00
$365.43kSell
David BuonaseraCHIEF TECHNOLOGY OFFICER2026-06-171,409$19.00
$26.77kSell
Michael G. BarrettCEO2026-06-16100,000$17.50
$1.75MSell
Michael G. BarrettCEO2026-06-16100,000$5.80
$580.00kBuy
Douglas S. KnopperDirector2026-06-1637,337$18.10
$675.80kSell
David BuonaseraCHIEF TECHNOLOGY OFFICER2026-06-1611,233$18.00
$202.19kSell
Michael G. BarrettCEO2026-06-15178,596$5.80
$1.04MBuy
David BuonaseraCHIEF TECHNOLOGY OFFICER2026-06-151,057$17.00
$17.97kSell
Michael G. BarrettCEO2026-06-15178,596$16.59
$2.96MSell
Douglas S. KnopperDirector2026-06-1010,766$15.73
$169.35kSell

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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
Sumant Mandal11.94%17,102,338$305.96MInsider
Blackrock Inc8.14%11,657,496$208.55MInstitution
Wellington Management Group LLP6.42%9,191,077$164.43MInstitution
Vanguard Portfolio Management LLC5.39%7,726,205$138.22MInstitution
Vanguard Capital Management LLC4.32%6,190,403$110.75MInstitution
Clearstone Venture Partners Iiia LP3.89%5,570,406$99.65MInsider
Capital Research Global Investors3.51%5,020,289$89.81MInstitution
News Corp3.31%4,746,349$84.91MInsider
Boston Partners3.30%4,719,863$84.44MInstitution
American Century Companies Inc3.23%4,626,816$82.77MInstitution

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MGNI vs Advertising Agency Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MGNI76.62%23.38%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, 28.04% 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 $305.96M.

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