Institutional shares held 127 Million
3.29M calls
4.1M puts
Total value of holdings $2.99B
$77.3M calls
$96.4M puts
Market Cap $3.13B
132,937,000 Shares Out.
Institutional ownership 95.6%
# of Institutions 333


Latest Institutional Activity in MGNI

Top Purchases

Q2 2025
Maestria Partners LLC Shares Held: 1.43M ($33.8M)
Q2 2025
Moody National Bank Trust Division Shares Held: 161K ($3.8M)
Q2 2025
Harbor Capital Advisors, Inc. Shares Held: 634K ($15M)
Q2 2025
Clear Creek Financial Management, LLC Shares Held: 24.5K ($577K)
Q2 2025
Wealth Enhancement Advisory Services, LLC Shares Held: 10.4K ($245K)

Top Sells

Q2 2025
Kopion Asset Management, LLC Shares Held: 423K ($9.98M)
Q2 2025
Greenwood Capital Associates LLC Shares Held: 40.2K ($947K)
Q2 2025
Wedge Capital Management L L P Shares Held: 108K ($2.54M)
Q2 2025
Griffin Asset Management, Inc. Shares Held: 19.9K ($470K)
Q2 2025
Allspring Global Investments Holdings, LLC Shares Held: 34.5K ($814K)

About MGNI

Magnite, Inc. operates an independent sell-side advertising platform in the United States and internationally. The company's platform offers applications and services for sellers of digital advertising inventory or publishers that own and operate CTV channels, applications, websites, and other digital media properties, to manage and monetize their inventory; and provides applications and services for buyers, including advertisers, agencies, agency trading desks, and demand side platforms to buy digital advertising inventory. It markets its technology solutions to buyers and sellers through a sales teams that operate from various locations. The company was formerly known as The Rubicon Project, Inc. and changed name to Magnite, Inc. in July 2020. Magnite, Inc. was incorporated in 2007 and is headquartered in New York, New York.


Insider Transactions at MGNI

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
1.13M Shares
From 20 Insiders
Grant, award, or other acquisition 774K shares
Exercise of conversion of derivative security 354K shares
Sell / Disposition
2.29M Shares
From 20 Insiders
Payment of exercise price or tax liability 439K shares
Open market or private sale 1.85M shares

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P - Open market or private purchase×
S - Open market or private sale×
V - Transaction voluntarily reported earlier than required×
A - Grant, award, or other acquisition×
D - Sale (or disposition) back to the issuer×
F - Payment of exercise price or tax liability×
I - Discretionary transaction×
M - Exercise of conversion of derivative security×
C - Conversion of derivative security×
E - Expiration of short derivative position×
H - Expiration (or cancellation) of long derivative position with value received×
O - Exercise of out-of-the-money derivative securities×
X - Exercise of in-the-money or at-the-money derivatives securities×
G - Bona fide gift×
L - Small Acquisition×
W - Acquisition or disposition by will or laws×
Z - Deposit into or withdrawal from voting trust×
J - Other acquisition or disposition×
K - Transaction in equity swap or similar instrument×
U - Disposition due to a tender of shares in a change of control transaction×
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