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Magnite
MGNI

Overview Fund Activity

284 hedge funds and large institutions have $3.54B invested in Magnite in 2025 Q2 according to their latest regulatory filings, with 54 funds opening new positions, 101 increasing their positions, 95 reducing their positions, and 57 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
284
Holders Change
-6
Holders Change %
-2.07%
% of All Funds
3.81%
Holding in Top 10
16
Holding in Top 10 Change
+9
Holding in Top 10 Change %
+128.57%
% of All Funds
0.21%
New
54
Increased
101
Reduced
95
Closed
57
Calls
$118M
Puts
$100M
Net Calls
+$17.5M
Net Calls Change
+$26M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
$415M
2
SSA
Schonfeld Strategic Advisors
New York
$45.8M
3
American Century Companies
American Century Companies
Missouri
$116M
4
FCM
Frontier Capital Management
Massachusetts
$43.3M
5
ACA
Apis Capital Advisors
New York
$25.3M

Top Sellers

1
Nordea Investment Management
Nordea Investment Management
Sweden
$7.94M
2
Ameriprise
Ameriprise
Minnesota
$2.56M
3
Bank of America
Bank of America
North Carolina
$9.97M
4
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
$0
5
Wellington Management Group
Wellington Management Group
Massachusetts
$131M
Name Holding Trade Value Shares
Change 		Shares
Change %
Fidelity Investments
1
Fidelity Investments
Massachusetts
$415M +$181M +7,501,741 +77%
Vanguard Group
2
Vanguard Group
Pennsylvania
$327M -$4.37M -181,236 -1%
Capital Research Global Investors
3
Capital Research Global Investors
California
$312M – – –
BlackRock
4
BlackRock
New York
$258M +$22M +910,204 +9%
Boston Partners
5
Boston Partners
Massachusetts
$133M +$7.12M +298,248 +6%
Wellington Management Group
6
Wellington Management Group
Massachusetts
$131M -$11M -455,434 -8%
Dimensional Fund Advisors
7
Dimensional Fund Advisors
Texas
$118M -$9.16M -379,818 -7%
American Century Companies
8
American Century Companies
Missouri
$116M +$45.1M +1,868,188 +63%
GIM
9
Granahan Investment Management
Massachusetts
$87.9M +$23.9M +992,796 +37%
EC
10
Edenbrook Capital
New York
$87.1M -$9.81M -406,700 -10%
NL
11
Nuveen LLC
North Carolina
$78.4M -$8.33M -345,411 -10%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$77.6M +$4.42M +183,414 +6%
State Street
13
State Street
Massachusetts
$73.7M +$3.63M +150,547 +5%
NTCM
14
Nine Ten Capital Management
Illinois
$68.9M +$2.98M +123,753 +5%
DCM
15
Driehaus Capital Management
Illinois
$67.1M +$8.99M +372,739 +15%
Goldman Sachs
16
Goldman Sachs
New York
$46.2M +$23.8M +988,600 +107%
SSA
17
Schonfeld Strategic Advisors
New York
$45.8M +$45.8M +1,900,598 New
Bank of New York Mellon
18
Bank of New York Mellon
New York
$43.4M +$26K +1,078 +0.1%
FCM
19
Frontier Capital Management
Massachusetts
$43.3M +$34.9M +1,448,456 +419%
Nomura Asset Management
20
Nomura Asset Management
Japan
$42M -$7.6M -315,052 -15%
UBS Group
21
UBS Group
Switzerland
$41.8M +$2.39M +99,276 +6%
MP
22
Maestria Partners
Georgia
$34.6M +$9.21M +382,000 +36%
SIMG
23
Stephens Investment Management Group
Texas
$32.6M +$9.63M +399,440 +42%
Northern Trust
24
Northern Trust
Illinois
$32.3M -$5.57M -231,006 -15%
Morgan Stanley
25
Morgan Stanley
New York
$28.2M +$7.11M +294,696 +34%
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