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PubMatic
PUBM

Overview Fund Activity

147 hedge funds and large institutions have $319M invested in PubMatic in 2025 Q2 according to their latest regulatory filings, with 24 funds opening new positions, 53 increasing their positions, 46 reducing their positions, and 32 closing their positions.

Holders
147
Holders Change
-10
Holders Change %
-6.37%
% of All Funds
1.97%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
24
Increased
53
Reduced
46
Closed
32
Calls
$6.36M
Puts
$3.51M
Net Calls
+$2.85M
Net Calls Change
+$1.05M

Top Buyers

1
Citadel Advisors
1
Citadel Advisors
Florida
$6.19M
2
Wellington Management Group
2
Wellington Management Group
Massachusetts
$16.6M
3
CP
3
CenterBook Partners
Connecticut
$2.75M
4
Jacobs Levy Equity Management
4
Jacobs Levy Equity Management
New Jersey
$10.9M
5
Acadian Asset Management
5
Acadian Asset Management
Massachusetts
$7.81M

Top Sellers

1
Vanguard Group
1
Vanguard Group
Pennsylvania
$32.5M
2
NC
2
Nixon Capital
Texas
$0
3
Qube Research & Technologies (QRT)
3
Qube Research & Technologies (QRT)
United Kingdom
$404K
4
Morgan Stanley
4
Morgan Stanley
New York
$1.75M
5
Pacer Advisors
5
Pacer Advisors
Pennsylvania
$0
Name Market Value Shares Shares
Change 		Shares
Change %
AQR Capital Management
51
AQR Capital Management
Connecticut
$683K 54,896 +43,628 +387%
GCP
52
GSA Capital Partners
United Kingdom
$634K 50,926 +25,699 +102%
Legal & General Group
53
Legal & General Group
United Kingdom
$600K 48,268 -702 -1%
HSBC Holdings
54
HSBC Holdings
United Kingdom
$596K 46,637 +6,066 +15%
Walleye Trading
55
Walleye Trading
New York
$539K 43,332 +43,332 New
Russell Investments Group
56
Russell Investments Group
United Kingdom
$533K 42,807 -3,440 -7%
California State Teachers Retirement System (CalSTRS)
57
California State Teachers Retirement System (CalSTRS)
California
$458K 36,777 – –
AllianceBernstein
58
AllianceBernstein
Tennessee
$450K 36,200 -4,620 -11%
IIM
59
INTECH Investment Management
Florida
$443K 35,574 -10,177 -22%
AAP
60
Ardsley Advisory Partners
Connecticut
$435K 35,000 +35,000 New
Amundi
61
Amundi
France
$432K 34,101 +34,101 New
T. Rowe Price Associates
62
T. Rowe Price Associates
Maryland
$424K 34,083 +2,824 +9%
Ohio Public Employees Retirement System (OPERS)
63
Ohio Public Employees Retirement System (OPERS)
Ohio
$419K 33,700 +33,700 New
Qube Research & Technologies (QRT)
64
Qube Research & Technologies (QRT)
United Kingdom
$404K 32,508 -234,074 -88%
SO
65
STRS Ohio
Ohio
$387K 31,100 – –
II
66
Inspire Investing
Idaho
$386K 31,015 -6,405 -17%
EGM
67
Engineers Gate Manager
New York
$376K 30,254 -29,651 -49%
Simplex Trading
68
Simplex Trading
Illinois
$366K 29,432 +2,176 +8%
NRD
69
Nebula Research & Development
New York
$350K 28,104 -5,375 -16%
Fuller & Thaler Asset Management
70
Fuller & Thaler Asset Management
California
$346K 27,835 -6,200 -18%
Two Sigma Advisers
71
Two Sigma Advisers
New York
$345K 27,700 +27,700 New
FRM
72
Fox Run Management
Connecticut
$332K 26,668 +26,668 New
PM
73
Penbrook Management
New York
$324K 35,445 – –
MIM
74
MetLife Investment Management
New Jersey
$305K 24,504 – –
Principal Financial Group
75
Principal Financial Group
Iowa
$281K 22,616 -2,331 -9%
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