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Phathom Pharmaceuticals
PHAT

Overview Fund Activity

137 hedge funds and large institutions have $401M invested in Phathom Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 25 funds opening new positions, 47 increasing their positions, 36 reducing their positions, and 31 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
137
Holders Change
-7
Holders Change %
-4.86%
% of All Funds
1.86%
Holding in Top 10
6
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-14.29%
% of All Funds
0.08%
New
25
Increased
47
Reduced
36
Closed
31
Calls
$915K
Puts
$688K
Net Calls
+$227K
Net Calls Change
+$4.97M

Top Buyers

1
TCM
1
Tang Capital Management
California
$7.52M
2
Jacobs Levy Equity Management
2
Jacobs Levy Equity Management
New Jersey
$3.74M
3
Citigroup
3
Citigroup
New York
$3.33M
4
Millennium Management
4
Millennium Management
New York
$3.28M
5
6CM
5
683 Capital Management
New York
$9.06M

Top Sellers

1
CC
1
Checkpoint Capital
California
$0
2
DC
2
Decheng Capital
California
$0
3
SL
3
Siren LLC
Connecticut
$0
4
Raymond James Financial
4
Raymond James Financial
Florida
$0
5
APM
5
Avidity Partners Management
Texas
$5.02M
Name Holding Trade Value Shares
Change 		Shares
Change %
FLSM
1
Frazier Life Sciences Management
California
$63.4M – – –
MVM
2
Medicxi Ventures Management
Jersey
$46.8M – – –
Jennison Associates
3
Jennison Associates
New York
$44.2M -$127K -20,182 -0.3%
Invesco
4
Invesco
Georgia
$22.9M -$129K -20,574 -0.6%
CG
5
Carlyle Group
District of Columbia
$21.9M – – –
BlackRock
6
BlackRock
New York
$20.8M -$1.12M -178,772 -5%
Vanguard Group
7
Vanguard Group
Pennsylvania
$17.4M -$5.48K -874 -0%
Ensign Peak Advisors
8
Ensign Peak Advisors
Utah
$15.8M -$80.1K -12,770 -0.5%
NMC
9
NEA Management Company
Maryland
$12.3M – – –
WA
10
Wasatch Advisors
Utah
$10.7M +$895K +142,699 +9%
6CM
11
683 Capital Management
New York
$9.06M +$2.63M +420,000 +41%
TCM
12
Tang Capital Management
California
$7.52M +$4.39M +700,000 +140%
CP
13
Catalys Pacific
Japan
$7.32M – – –
PBM
14
Propel Bio Management
California
$7.12M +$909K +145,000 +15%
Morgan Stanley
15
Morgan Stanley
New York
$7.09M +$1.03M +164,632 +17%
GKIM
16
GW&K Investment Management
Massachusetts
$6.92M +$9.42K +1,503 +0.1%
Geode Capital Management
17
Geode Capital Management
Massachusetts
$6.37M -$13K -2,072 -0.2%
State Street
18
State Street
Massachusetts
$5.65M -$869K -138,582 -13%
APM
19
Avidity Partners Management
Texas
$5.02M -$3.7M -590,100 -42%
WP
20
Woodline Partners
California
$4.71M -$1.57M -250,000 -25%
UBS Group
21
UBS Group
Switzerland
$4.44M +$1.52M +241,962 +52%
SAM
22
Simplify Asset Management
Nevada
$4.28M +$627K +100,000 +17%
Jacobs Levy Equity Management
23
Jacobs Levy Equity Management
New Jersey
$3.74M +$3.74M +596,108 New
Prudential Financial
24
Prudential Financial
New Jersey
$3.57M +$660K +105,290 +23%
Citigroup
25
Citigroup
New York
$3.33M +$3.05M +486,282 +1,091%
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