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Magnite
MGNI

Overview Fund Activity

290 hedge funds and large institutions have $1.51B invested in Magnite in 2025 Q1 according to their latest regulatory filings, with 53 funds opening new positions, 102 increasing their positions, 96 reducing their positions, and 42 closing their positions.

Holders
290
Holders Change
+7
Holders Change %
+2.47%
% of All Funds
3.94%
Holding in Top 10
7
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-30%
% of All Funds
0.1%
New
53
Increased
102
Reduced
96
Closed
42
Calls
$41.6M
Puts
$50.1M
Net Calls
-$8.44M
Net Calls Change
-$4.39M

Top Buyers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$110M
2
Capital Research Global Investors
2
Capital Research Global Investors
California
$147M
3
American Century Companies
3
American Century Companies
Missouri
$33.8M
4
Pacer Advisors
4
Pacer Advisors
Pennsylvania
$12.6M
5
EC
5
Edenbrook Capital
New York
$45.8M

Top Sellers

1
Wellington Management Group
1
Wellington Management Group
Massachusetts
$67.4M
2
Victory Capital Management
2
Victory Capital Management
Texas
$1.38M
3
GIM
3
Granahan Investment Management
Massachusetts
$30.2M
4
DCM
4
Driehaus Capital Management
Illinois
$27.5M
5
WJWM
5
Williams Jones Wealth Management
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
Vanguard Group
1
Vanguard Group
Pennsylvania
$157M 13,743,521 +138,417 +1%
Capital Research Global Investors
2
Capital Research Global Investors
California
$147M 12,920,070 +5,194,835 +67%
BlackRock
3
BlackRock
New York
$112M 9,787,840 -379,403 -4%
Fidelity Investments
4
Fidelity Investments
Massachusetts
$110M 9,684,198 +8,069,421 +500%
Wellington Management Group
5
Wellington Management Group
Massachusetts
$67.4M 5,903,271 -1,126,740 -16%
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$60.3M 5,281,651 -242,992 -4%
Boston Partners
7
Boston Partners
Massachusetts
$60.2M 5,276,356 +520,033 +11%
EC
8
Edenbrook Capital
New York
$45.8M 4,016,672 +913,130 +29%
NL
9
Nuveen LLC
North Carolina
$41M 3,596,503 +3,596,503 New
Geode Capital Management
10
Geode Capital Management
Massachusetts
$34.6M 3,033,428 +75,850 +3%
American Century Companies
11
American Century Companies
Missouri
$33.8M 2,961,009 +2,651,033 +855%
State Street
12
State Street
Massachusetts
$33.1M 2,903,060 -39,070 -1%
NTCM
13
Nine Ten Capital Management
Illinois
$31.2M 2,734,830 -381,019 -12%
GIM
14
Granahan Investment Management
Massachusetts
$30.2M 2,649,990 -963,094 -27%
DCM
15
Driehaus Capital Management
Illinois
$27.5M 2,409,439 -909,054 -27%
Nomura Asset Management
16
Nomura Asset Management
Japan
$23.5M 2,055,793 +181,958 +10%
Bank of New York Mellon
17
Bank of New York Mellon
New York
$20.5M 1,797,162 -723,728 -29%
UBS Group
18
UBS Group
Switzerland
$18.6M 1,633,942 -59,709 -4%
Northern Trust
19
Northern Trust
Illinois
$17.9M 1,570,877 -87,658 -5%
RA
20
Royce & Associates
New York
$13.5M 1,182,806 -415,090 -26%
Pacer Advisors
21
Pacer Advisors
Pennsylvania
$12.6M 1,102,156 +1,102,156 New
MP
22
Maestria Partners
Georgia
$12M 1,052,317 +100,000 +11%
Qube Research & Technologies (QRT)
23
Qube Research & Technologies (QRT)
United Kingdom
$11.8M 1,038,131 +350,098 +51%
Charles Schwab
24
Charles Schwab
California
$11.6M 1,017,939 -31,473 -3%
JPMorgan Chase & Co
25
JPMorgan Chase & Co
New York
$11.3M 988,789 -522,650 -35%
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