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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 %
BlackRock
1
BlackRock
New York
$42.9M -$26.8K -2,155 -0.1%
GHC
2
Graham Holdings Company
Virginia
$35.2M – – –
Vanguard Group
3
Vanguard Group
Pennsylvania
$32.5M -$9.98M -802,424 -24%
Dimensional Fund Advisors
4
Dimensional Fund Advisors
Texas
$18.4M -$510K -41,036 -3%
Wellington Management Group
5
Wellington Management Group
Massachusetts
$16.6M +$3.18M +255,512 +24%
Renaissance Technologies
6
Renaissance Technologies
New York
$15.2M +$1.54M +123,400 +11%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$12.3M +$612K +49,209 +5%
Royal Bank of Canada
8
Royal Bank of Canada
Ontario, Canada
$12.1M +$830K +66,730 +7%
State Street
9
State Street
Massachusetts
$11.4M -$186K -14,946 -2%
Jacobs Levy Equity Management
10
Jacobs Levy Equity Management
New Jersey
$10.9M +$2.68M +215,486 +33%
Acadian Asset Management
11
Acadian Asset Management
Massachusetts
$7.81M +$2.13M +171,106 +37%
Citadel Advisors
12
Citadel Advisors
Florida
$6.19M +$4.61M +370,571 +292%
NL
13
Nuveen LLC
North Carolina
$4.99M -$400K -32,119 -7%
JPMorgan Chase & Co
14
JPMorgan Chase & Co
New York
$4.78M -$206K -16,536 -4%
Nordea Investment Management
15
Nordea Investment Management
Sweden
$4.44M +$41.8K +3,263 +1%
D.E. Shaw & Co
16
D.E. Shaw & Co
New York
$4.43M -$1.19M -95,529 -21%
Northern Trust
17
Northern Trust
Illinois
$4.25M -$216K -17,377 -5%
Charles Schwab
18
Charles Schwab
California
$4.22M +$149K +11,953 +4%
Goldman Sachs
19
Goldman Sachs
New York
$4.07M +$513K +41,205 +14%
AC
20
Avestar Capital
New York
$3.79M -$187K -15,000 -5%
TI
21
Trexquant Investment
Connecticut
$3.22M -$506K -40,674 -14%
PAM
22
Panagora Asset Management
Massachusetts
$3.2M – – –
CP
23
CenterBook Partners
Connecticut
$2.75M +$2.75M +220,810 New
Susquehanna International Group
24
Susquehanna International Group
Pennsylvania
$2.56M +$202K +16,260 +9%
Jane Street
25
Jane Street
New York
$2.15M +$789K +63,447 +58%
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