We are live on ! Find out more
PUBM icon

PubMatic
PUBM

152 hedge funds and large institutions have $245M invested in PubMatic in 2025 Q4 according to their latest regulatory filings, with 30 funds opening new positions, 52 increasing their positions, 52 reducing their positions, and 26 closing their positions.

New
Increased
Maintained
Reduced
Closed

27% more call options, than puts

Call options by funds: $6.78M | Put options by funds: $5.33M

15% more first-time investments, than exits

New positions opened: 30 | Existing positions closed: 26

7% more capital invested

Capital invested by funds: $229M → $245M (+$16.5M)

1% more funds holding

Funds holding: 150 → 152 (+2)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

0% more repeat investments, than reductions

Existing positions increased: 52 | Existing positions reduced: 52

1.26% less ownership

Funds ownership: 73.72% → 72.46% (-1.3%)

Holders
152
Holders Change
+2
Holders Change %
+1.33%
% of All Funds
1.85%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
30
Increased
52
Reduced
52
Closed
26
Calls
$6.78M
Puts
$5.33M
Net Calls
+$1.45M
Net Calls Change
-$1.37M

Top Buyers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
+$6.09M
2
CP
CenterBook Partners
Connecticut
+$3.47M
3
TI
Trexquant Investment
Connecticut
+$2.18M
4
Acadian Asset Management
Acadian Asset Management
Massachusetts
+$2.08M
5
AG
Algert Global
California
+$1.67M

Top Sellers

Rank Fund Capital Flow
1
AI
Acuitas Investments
Washington
-$2.94M
2
N
Nuveen
North Carolina
-$2.6M
3
Wellington Management Group
Wellington Management Group
Massachusetts
-$2.59M
4
UBS Group
UBS Group
Switzerland
-$2.43M
5
BlackRock
BlackRock
New York
-$2.31M
Name Holding Trade Value Shares
Change 		Change in
Stake
PNC Financial Services Group
151
PNC Financial Services Group
Pennsylvania
$142 – – –
SWM
152
SHP Wealth Management
Massachusetts
$27 +$26 +3 New
AI
153
Acuitas Investments
Washington
– -$2.94M -355,651 Closed
RC
154
Roubaix Capital
Colorado
– -$2.25M -271,335 Closed
MHP
155
Manatuck Hill Partners
Connecticut
– -$1.66M -200,000 Closed
Connor, Clark & Lunn Investment Management (CC&L)
156
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
– -$638K -77,044 Closed
Swiss National Bank
157
Swiss National Bank
Switzerland
– -$606K -73,200 Closed
CMF
158
Counterpoint Mutual Funds
California
– -$360K -43,429 Closed
BHCM
159
Brevan Howard Capital Management
Jersey
– -$336K -40,577 Closed
IMC Chicago
160
IMC Chicago
Illinois
– -$264K -30,356 Closed
Janus Henderson Group
161
Janus Henderson Group
United Kingdom
– -$184K -22,198 Closed
FFP
162
FourThought Financial Partners
Florida
– -$183K -22,085 Closed
SPA
163
Sherbrooke Park Advisers
New York
– -$160K -19,301 Closed
AP
164
Antipodes Partners
Australia
– -$158K -19,065 Closed
DC
165
Diametric Capital
Massachusetts
– -$131K -15,789 Closed
ASRS
166
Arizona State Retirement System
Arizona
– -$93.6K -11,305 Closed
KK
167
KLP Kapitalforvaltning
Norway
– -$59.6K -7,200 Closed
Zurich Cantonal Bank
168
Zurich Cantonal Bank
Switzerland
– -$48.5K -5,852 Closed
QT
169
Quantbot Technologies
New York
– -$25.2K -3,038 Closed
CIAM
170
Caitong International Asset Management
Hong Kong
– -$21K -2,534 Closed
BCV
171
Banque Cantonale Vaudoise
Switzerland
– -$8K -1,006 Closed
ASN
172
Advisory Services Network
Georgia
– -$3.59K -434 Closed
HFS
173
Hantz Financial Services
Michigan
– -$3K -400 Closed
SAM
174
Smartleaf Asset Management
Massachusetts
– -$1.11K -131 Closed
MSG
175
Main Street Group
Virginia
– -$828 -100 Closed
4 5 6
7
8

PUBM Hedge Fund Activity: Q4 2025 in Review

152 of the 8,227 institutional investors tracked by Wall St. Rank reported a position in PubMatic (PUBM) for Q4 2025, worth a combined $245M — up 7.2% from $229M a quarter earlier.

Buyers outnumbered sellers: 30 funds opened new PUBM positions and 26 closed out — a net gain of 4 holders — while 52 added to existing stakes and 52 trimmed.

The largest buyer was Millennium Management, adding an estimated $6.09M. The largest seller was Acuitas Investments, exiting entirely with an estimated $2.94M sold.

  • 152 institutional investors held PubMatic (PUBM) as of Q4 2025, up from 150 in Q3 2025.
  • Funds reported $245M of PubMatic stock for Q4 2025, up 7.2% quarter-over-quarter.
  • 30 funds opened new PubMatic positions in Q4 2025 and 26 closed out, a net change of +4 holders.
  • The largest PubMatic buyer in Q4 2025 was Millennium Management, an estimated $6.09M added.
  • The largest PubMatic seller in Q4 2025 was Acuitas Investments, an estimated $2.94M sold.

Based on aggregated 13F filings for Q4 2025.