MGNI

Magnite INC

-$722.3M

Net Activity

Institutions Holding

293

Popularity Rank

#2029

Avg Weight

0.34%

Total Value

$1.6B

Ownership Trend

293 institutions currently hold MGNI, with 152 net buyers and 144 net sellers this quarter.

Institutional Moves

Institutional Moves (Q1 2026)

Neutral

Based on recent trading activity

Net Selling Institutions

144

Net Buying Institutions

152

Key Holders

Key Holders

Top 5 by Value

BI
BlackRock, Inc.
$138.5M
WM
Wellington Management Group LLP
$109.2M
VP
Vanguard Portfolio Management LLC
$91.8M
VC
Vanguard Capital Management LLC
$73.5M
CR
Capital Research Global Investors
$59.6M

Top 5 by Conviction

NT
Nine Ten Capital Management LLC
13.14%
EC
Edenbrook Capital, LLC
12.57%
GC
Grizzlyrock Capital, LLC
11.65%
3C
325 Capital LLC
8.68%
KA
Kopion Asset Management, LLC
7.91%
View all 293 holding institutions

Quarterly Activity

Recent Activity

+$951.5M

Total Buy Value

$1.0B

Total Sell Value

New buy43
Trim86
Add109
Sold out58

152

Net Buyers

144

Net Sellers

Insider Trading (Form 4)

Form 144 Pre-Sale Notices

22

Filings (90d)

$9.68M

Total Est. Value

547K shares

Planned Shares

Last Filed 2026-07-10
FilerFiling DateEst. Value
PAUL CAINE2026-07-10$318K
DAVID BUONASERA2026-07-07$26K
SEAN BUCKLEY2026-07-07$401K
ADAM L SOROCA2026-07-07$168K
DAVID BUONASERA2026-07-01$188K
ADAM L SOROCA2026-07-01$160K
BARRETT MICHAEL G.2026-06-29$1.46M
Soroca Adam Lee2026-06-17$152K
Buckley Sean Patrick2026-06-17$357K
Buonasera David2026-06-17$27K

Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

FAQ

Who are the top institutional investors holding MAGNITE INC (MGNI)?
Major stakeholders currently include BlackRock, Inc. ($138.5M), Wellington Management Group LLP ($109.2M), Vanguard Portfolio Management LLC ($91.8M). Based on the latest 13F filings, there are a total of 293 tracked investment funds and institutions maintaining positions in MGNI.
What is the overall institutional sentiment toward MGNI recently?
Institutional sentiment appears Bearish (Net Selling). During the most recent reporting quarter, the stock experienced a net outflow of $722.3M, driven by 152 managers accumulating shares while 144 reduced their exposure.
Which institutions have been selling or reducing their MGNI positions?
In the latest period, 86 funds trimmed their holdings, and 58 managers completely exited their positions. The aggregate reported sell value was $1.0B.
Are there any notable investors adding MGNI to their portfolios?
Yes, buying activity remains notable. 43 institutions opened new positions in {ticker}, and 109 existing holders added to their shares. The total reported buy value for the quarter amounted to $951.5M.

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