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PubMatic
PUBM

Overview Fund Activity

148 hedge funds and large institutions have $322M invested in PubMatic in 2025 Q2 according to their latest regulatory filings, with 24 funds opening new positions, 54 increasing their positions, 46 reducing their positions, and 31 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
148
Holders Change
-8
Holders Change %
-5.13%
% of All Funds
1.98%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
24
Increased
54
Reduced
46
Closed
31
Calls
$6.93M
Puts
$4.37M
Net Calls
+$2.56M
Net Calls Change
+$759K

Top Buyers

1
Citadel Advisors
Citadel Advisors
Florida
+$4.61M
2
Wellington Management Group
Wellington Management Group
Massachusetts
+$3.18M
3
CP
CenterBook Partners
Connecticut
+$2.75M
4
Jacobs Levy Equity Management
Jacobs Levy Equity Management
New Jersey
+$2.68M
5
Acadian Asset Management
Acadian Asset Management
Massachusetts
+$2.13M

Top Sellers

1
Vanguard Group
Vanguard Group
Pennsylvania
-$9.98M
2
NC
Nixon Capital
Texas
-$5.75M
3
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
-$2.91M
4
Morgan Stanley
Morgan Stanley
New York
-$2.71M
5
Pacer Advisors
Pacer Advisors
Pennsylvania
-$2.46M
Name Holding Trade Value Shares
Change 		Shares
Change %
Principal Financial Group
76
Principal Financial Group
Iowa
$281K -$29K -2,331 -9%
Janus Henderson Group
77
Janus Henderson Group
United Kingdom
$276K – – –
Creative Planning
78
Creative Planning
Kansas
$269K +$269K +21,611 New
Wolverine Trading
79
Wolverine Trading
Illinois
$260K +$260K +22,296 New
DC
80
Diametric Capital
Massachusetts
$255K +$255K +20,499 New
QCM
81
Quantinno Capital Management
New York
$236K +$52.1K +4,186 +28%
Citigroup
82
Citigroup
New York
$234K -$177K -14,194 -43%
Millennium Management
83
Millennium Management
New York
$233K -$1.29M -104,003 -85%
CC
84
Corton Capital
Ontario, Canada
$210K +$85.6K +6,884 +69%
Cetera Investment Advisers
85
Cetera Investment Advisers
Illinois
$208K -$28.8K -2,318 -12%
Manulife (Manufacturers Life Insurance)
86
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$193K +$7.84K +630 +4%
JRP
87
Jasper Ridge Partners
California
$187K – – –
GCM
88
Graham Capital Management
Connecticut
$175K -$533K -42,852 -75%
US Bancorp
89
US Bancorp
Minnesota
$174K -$8.99K -723 -5%
GS
90
GWN Securities
Florida
$165K +$165K +13,252 New
DT
91
Diversified Trust
Tennessee
$162K +$846 +68 +0.5%
State Board of Administration of Florida Retirement System
92
State Board of Administration of Florida Retirement System
Florida
$155K – – –
HT
93
Headlands Technologies
Illinois
$150K +$55.7K +4,478 +59%
VOYA Investment Management
94
VOYA Investment Management
Georgia
$150K -$11.9K -957 -7%
New York State Common Retirement Fund
95
New York State Common Retirement Fund
New York
$146K – – –
Verition Fund Management
96
Verition Fund Management
Connecticut
$146K -$596K -47,907 -80%
ASRS
97
Arizona State Retirement System
Arizona
$139K -$398 -32 -0.3%
A
98
AlphaQuest
New York
$137K -$34.6K -2,779 -20%
AAS
99
Avantax Advisory Services
Texas
$126K -$21.2K -1,706 -14%
CC
100
Centiva Capital
New York
$124K -$163K -13,125 -57%
2 3
4
5 6