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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.

New
Increased
Maintained
Reduced
Closed
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 Holding Trade Value Shares
Change 		Shares
Change %
ProShare Advisors
151
ProShare Advisors
Maryland
$311K -$93.5K -8,196 -23%
PFSRSONJ
152
Police & Firemen's Retirement System of New Jersey
New Jersey
$305K – – –
Brown Advisory
153
Brown Advisory
Maryland
$290K +$290K +25,409 New
VCA
154
Verdence Capital Advisors
Maryland
$283K +$65.6K +5,748 +30%
TSS
155
Two Sigma Securities
New York
$281K +$281K +24,655 New
KK
156
KLP Kapitalforvaltning
Norway
$281K -$36.5K -3,200 -12%
SG Americas Securities
157
SG Americas Securities
New York
$274K +$274K +24,005 New
SRL
158
Scientech Research LLC
New Jersey
$273K +$273K +23,901 New
Pictet Asset Management
159
Pictet Asset Management
Switzerland
$258K +$25.5K +2,238 +11%
HSBC Holdings
160
HSBC Holdings
United Kingdom
$257K -$511K -45,046 -67%
MYIA
161
Mount Yale Investment Advisors
Colorado
$256K -$33.4K -2,923 -12%
AP
162
Antipodes Partners
Australia
$255K +$163K +14,267 +177%
MML Investors Services
163
MML Investors Services
Massachusetts
$245K +$245K +21,502 New
EAM
164
Evanson Asset Management
California
$242K – – –
VA
165
Vident Advisory
Georgia
$239K +$5.56K +487 +2%
OWA
166
Outlook Wealth Advisors
Texas
$234K -$1.3K -114 -0.6%
Teacher Retirement System of Texas
167
Teacher Retirement System of Texas
Texas
$233K +$233K +20,439 New
LWA
168
Ledgewood Wealth Advisors
New Hampshire
$226K – – –
Jacobs Levy Equity Management
169
Jacobs Levy Equity Management
New Jersey
$224K -$1.36M -119,025 -86%
AC
170
AXQ Capital
New Jersey
$218K +$218K +19,092 New
A
171
AlphaQuest
New York
$218K +$104K +9,073 +91%
M&T Bank
172
M&T Bank
New York
$216K +$51.7K +4,537 +31%
BC
173
Bayforest Capital
United Kingdom
$203K +$175K +15,318 +609%
Creative Planning
174
Creative Planning
Kansas
$202K +$28.2K +2,471 +16%
CC
175
Centiva Capital
New York
$194K +$194K +17,000 New
5 6
7
8 9