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Phathom Pharmaceuticals

171 hedge funds and large institutions have $1.03B invested in Phathom Pharmaceuticals in 2025 Q4 according to their latest regulatory filings, with 48 funds opening new positions, 49 increasing their positions, 50 reducing their positions, and 11 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding in top 10

Funds holding in top 10:

28% more funds holding

Funds holding: 134171 (+37)

0.8% less ownership

Funds ownership: 87.88%87.07% (-0.8%)

2% less repeat investments, than reductions

Existing positions increased: 49 | Existing positions reduced: 50

Holders
171
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
8
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$17.8M
Puts
$1.18M
Net Calls
Net Calls Change

Top Buyers

1 +$9.46M
2 +$5.64M
3 +$5.62M
4
Jane Street
Jane Street
New York
+$3.96M
5
CP
Catalys Pacific
Japan
+$3.74M

Top Sellers

1 -$42.8M
2 -$6.13M
3 -$5.27M
4
ACM
AIGH Capital Management
Maryland
-$5.05M
5
Walleye Capital
Walleye Capital
New York
-$3.42M
Name Holding Trade Value Shares
Change
Change in
Stake
JF
101
Jump Financial
Illinois
$289K
BC
102
Bridgefront Capital
Texas
$282K
SG Americas Securities
103
SG Americas Securities
New York
$274K
FT
104
Fiduciary Trust
Massachusetts
$266K
PA
105
Profund Advisors
Maryland
$258K
VF
106
Virtu Financial
New York
$258K
State of Wisconsin Investment Board
107
State of Wisconsin Investment Board
Wisconsin
$254K
BBA
108
Baader Bank Aktiengesellschaft
Germany
$249K
Pathstone Holdings
109
Pathstone Holdings
New Jersey
$247K
PAG
110
Private Advisor Group
New Jersey
$242K
KK
111
KLP Kapitalforvaltning
Norway
$232K
Rafferty Asset Management
112
Rafferty Asset Management
New York
$230K
PAP
113
Persistent Asset Partners
Hong Kong
$214K
SRL
114
Scientech Research LLC
New Jersey
$214K
GCM
115
Graham Capital Management
Connecticut
$213K
Manulife (Manufacturers Life Insurance)
116
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$206K
PFSRSONJ
117
Police & Firemen's Retirement System of New Jersey
New Jersey
$198K
ASRS
118
Arizona State Retirement System
Arizona
$197K
CUAMC
119
China Universal Asset Management Company
China
$192K
SFI
120
Susquehanna Fundamental Investments
Pennsylvania
$190K
ET
121
Entropy Technologies
New York
$182K
AC
122
AXQ Capital
New Jersey
$175K
AF
123
Allworth Financial
California
$173K
9C
124
9823 Capital
Texas
$173K
ProShare Advisors
125
ProShare Advisors
Maryland
$172K