PHAT

PHATHOM PHARMACEUTICALS INC
USCUSIP 71722W107
Institutional Owners
64
+13 QoQ
13F Value Held
$328.3M
Insider Net · 180d
$0
0↑ 0↓
Recent Filings
0
Smart-money sentimentBullish
BearishBullish
13F funds (latest Q)39 adding · 21 trimming
Insider net (180d)+$0
Price history not yet available for PHAT.

Top institutional holders

64 13F filers
#FundPosition valueSharesLast moveAs of
1Frazier Life Sciences Management, L.P.
$138.5M
12.47MHeldQ1 2026
2VANGUARD CAPITAL MANAGEMENT LLC
$28.7M
2.58MNewQ1 2026
3NEA Management Company, LLC
$21.8M
1.96MHeldQ1 2026
4683 Capital Management, LLC
$20.6M
1.85MAddedQ1 2026
5Ensign Peak Advisors, Inc
$18.1M
1.63MReducedQ1 2026
6STATE STREET CORP
$15.4M
1.39MAddedQ1 2026
7WASATCH ADVISORS LP
$14.9M
1.34MAddedQ1 2026
8Divisadero Street Capital Management, LP
$11.0M
662.3KNewQ4 2025
9PERCEPTIVE ADVISORS LLC
$10.3M
925.0KNewQ1 2026
10Point72 Asset Management, L.P.
$8.0M
439.8KNewQ3 2024
11VANGUARD PORTFOLIO MANAGEMENT LLC
$7.4M
666.0KNewQ1 2026
12EcoR1 Capital, LLC
$6.9M
625.0KNewQ1 2026
13Woodline Partners LP
$4.1M
369.1KNewQ1 2026
14VANGUARD FIDUCIARY TRUST CO
$3.8M
338.7KNewQ1 2026
15Trexquant Investment LP
$3.3M
293.3KAddedQ1 2026
16Simplify Asset Management Inc.
$2.9M
262.4KReducedQ1 2026
17NewEdge Advisors, LLC
$2.0M
183.0KNewQ1 2026
18Hennion & Walsh Asset Management, Inc.
$1.6M
145.9KAddedQ1 2026
19GILDER GAGNON HOWE & CO LLC
$1.6M
139.9KReducedQ1 2026
20Stratos Wealth Partners, LTD.
$1.1M
100.0KAddedQ1 2026
21Freestone Grove Partners LP
$940K
84.6KNewQ1 2026
22Engineers Gate Manager LP
$820K
73.8KAddedQ1 2026
23Aquatic Capital Management LLC
$454K
40.9KNewQ1 2026
24TUDOR INVESTMENT CORP ET AL
$425K
38.2KAddedQ1 2026
25TOCQUEVILLE ASSET MANAGEMENT L.P.
$391K
35.2KAddedQ1 2026

Fund activity — latest quarter

Opened (NEW)
22
funds
Added
17
funds
Reduced
11
funds
Exited
10
funds

Insider activity (Form 4)

No Form 4 insider transactions on file yet.

Institutional ownership over time

58 funds+57 since Q2 2022
02958Q2 2022Q1 2023Q4 2023Q3 2024Q2 2025Q1 2026
funds holding aggregate valuelatest $308M

Funds that own PHAT also own

CompanyCo-held byCombined value
Eli Lilly & Co - USLLY52 funds$38.6B
Microsoft Corp - USMSFT51 funds$135.9B
Amazon.com IncAMZN51 funds$97.5B
Citigroup Inc - USC51 funds$11.0B
Intuitive Surgical Inc - USISRG51 funds$9.5B
Boston Scientific Corp - USBSX51 funds$5.9B
THE BLACKSTONE GROUP INCBX51 funds$4.5B
Nvidia Corp - USNVDA50 funds$206.3B
Alphabet, Inc.GOOGL50 funds$79.4B
Meta Platforms Inc - USMETA50 funds$61.0B
Tesla Inc - USTSLA50 funds$50.0B
Berkshire Hathaway Inc - US Class BBRK/B50 funds$40.1B

Ranked by how many of PHAT's institutional holders also hold each name — a cross-fund conviction signal. Via the MCP server (ticker.co_held).

Recent filings

0 shown

No filings captured for this ticker in the live stream yet.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for PHAT. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.