PHATHOM PHARMACEUTICALS INC (PHAT) is held by 101 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is Invesco Ltd. as of Q1 2026.

Are institutions buying or selling PHAT?

In Q1 2026, 67 institutions opened or increased positions in PHATHOM PHARMACEUTICALS INC while 37 reduced or exited — a net buying quarter.

What is the Smart Money Verdict on PHAT?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for PHATHOM PHARMACEUTICALS INC.

How many hedge funds hold PHAT?

101 institutional investors report holding PHATHOM PHARMACEUTICALS INC (PHAT) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into PHAT?

As of Q1 2026, tracked institutions in PHATHOM PHARMACEUTICALS INC show 67 buyers versus 37 sellers — net inflows.

PHATHOM PHARMACEUTICALS INC

PHAT·71722W107·US·Common Stock·Healthcare - Biotechnology-Activist

101

Holders

(8 Elite)

$398.1M

Total Value

64% (104)

Consensus

67 buying - 37 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

View all

Held by 101 funds

8 elite

Who's Trading

Activist

Millennium Management LLC5.3%Mar 12, 2026

ActivistFLFrazier Life Sciences Public Fund, L.P.7.5%Nov 4, 2025

InsiderBCBreedlove Robert CharlesSell $7KNov 3, 2025

InsiderBCBreedlove Robert CharlesSell $6KSep 5, 2025

Activist

Carlyle Group Inc.4.9%Aug 28, 2025

InsiderBCBreedlove Robert CharlesSell $14KJul 16, 2025

Activist

Jennison Associates LLC0.0%Jun 9, 2025

Activist

PRUDENTIAL FINANCIAL INC0.0%Jun 6, 2025

InsiderTNTopper James NBuy $15KMay 21, 2025

InsiderTNTopper James NBuy $21KMay 14, 2025

View all insider trades View all activist filings

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
Invesco Ltd.	Increased	4.3M(+10.2%)	$48M	0.0%	-38.75%	32
BlackRock, Inc.	Increased	4.1M(+14.2%)	$45.1M	0.0%	+43.49%	33
MILLENNIUM MANAGEMENT LLC	Increased	4M(+93.2%)	$44.7M	0.0%	+17.81%	46
Carlyle Group Inc.	Unchanged	3.5M	$38.8M	0.4%	+60.14%	0
VAVANGUARD CAPITAL MANAGEMENT LLC	New	2.6M	$28.7M	0.0%	+14.12%	40
Ensign Peak Advisors, Inc	Decreased	1.6M(-30.8%)	$18.1M	0.0%	-35.10%	0
STATE STREET CORP	Increased	1.4M(+20.6%)	$15.4M	0.0%	+14.68%	34
WASATCH ADVISORS LP	Increased	1.3M(+0.7%)	$14.9M	0.1%	+17.84%	28
GEODE CAPITAL MANAGEMENT, LLC	Increased	1.3M(+23.7%)	$14.8M	0.0%	-18.28%	34
NANOMURA ASSET MANAGEMENT INTERNATIONAL INC.	New	1.2M	$13.4M	0.0%	+14.12%	39
FRANKLIN RESOURCES INC	New	994,504	$11M	0.0%	+14.12%	38
MWMARSHALL WACE, LLP	New	860,692	$9.6M	0.0%	+14.12%	38
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	666,029	$7.4M	0.0%	+14.12%	38
GOLDMAN SACHS GROUP INC	Increased	626,196(+59.7%)	$7M	0.0%	+0.32%	39
TWO SIGMA INVESTMENTS, LP	Increased	482,136(+734.4%)	$5.4M	0.0%	+7.29%	44
NORTHERN TRUST CORP	Increased	414,956(+16.4%)	$4.6M	0.0%	-33.00%	31
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	409,015(+2.8%)	$4.5M	0.0%	-25.92%	28
CITADEL ADVISORS LLC	Increased	383,058(+23.1%)	$4.3M	0.0%	+11.81%	32
Woodline Partners LP	Increased	369,052(+97.0%)	$4.1M	0.0%	-5.84%	43
UBS Group AG	Increased	360,371(+18.4%)	$4M	0.0%	+47.16%	31