Phathom Pharmaceuticals PHAT Institutional Ownership

NASDAQ PHAT

$7.30 -0.06 (-0.82%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

163 Institutions

Increased 82 50.3%

Unchanged 31 19.0%

Reduced 50 30.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

86.56%

▲+2.62 pp QoQ

Shares Held by Institutions

72.49Mn

of 83.75Mn outstanding

▲+7.13% QoQ

Shares Outstanding

83.75Mn

11.25Mn held outside 13F filers

Institutional Investors

163

filed 13F for Jun 2026

▼-9 vs prior quarter

Net Shares Added (QoQ)

+4.82Mn

accumulated since last quarter

Value of Holdings

$533.55Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Phathom Pharmaceuticals, Inc. (NASDAQ:PHAT) appears in 163 institutional 13F filings for the quarter ending June 2026.

These investors held 86.6% of outstanding shares in June 2026, up from 83.9% in March 2026.
They increased total shares held in Phathom Pharmaceuticals by 7.13% from the prior quarter, while the number of investors in PHAT increased 39.32% year over year.
Of these 163 funds, 82 grew their exposure to Phathom Pharmaceuticals, 50 cut back, and 31 maintained positions.
Combined, these investors held 72.49Mn shares in PHAT for June 2026, up by 4.82Mn shares quarter on quarter, and up 15.23Mn shares year over year.
Frazier Life Sciences Management, L.P. holds the largest position in PHAT at 12.47Mn shares as of June 30, 2026, or 14.89% of shares outstanding.
Top purchasers of PHAT stock for the quarter ending June 2026 included Goldman Sachs Group Inc (1.15Mn), Point72 Asset Management, L.P. (1.02Mn), Franklin Templeton Inc (976.32K), GW&K Investment Management, LLC (745.73K), HSBC HOLDINGS PLC (709.7K).
The largest sellers of Phathom Pharmaceuticals for the quarter ending June 2026 were MILLENNIUM MANAGEMENT LLC (647.08K), Ensign Peak Advisors, Inc (575.89K), PERCEPTIVE ADVISORS LLC (393.0K), Invesco Ltd. (292.33K), Squarepoint Ops LLC (243.57K).
According to Business Quant data, leading holders of PHAT for June 2026 are Frazier Life Sciences Management, L.P. (12.47Mn), Medicxi Ventures Management (Jersey) Ltd (7.46Mn), BlackRock, Inc. (4.53Mn), Invesco Ltd. (4.03Mn), Carlyle Group Inc. (3.5Mn), MILLENNIUM MANAGEMENT LLC (3.38Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.66Mn), GW&K Investment Management, LLC (2.17Mn), Franklin Templeton Inc (1.97Mn), NEA Management Company, LLC (1.96Mn).

Form 13F Holdings

163 Institutional Holders

Report period 30 Jun, 2026

Total shares held 72.49Mn

Of outstanding 86.56%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Frazier Life Sciences Management, L.P.	0001892134	12,466,489	14.89%	0	0.00%	$135.26Mn
2	Medicxi Ventures Management (Jersey) Ltd	0001715579	7,464,572	8.91%	0	0.00%	$80.99Mn
3	BlackRock, Inc.	0002012383	4,525,129	5.40%	▲463,133	+11.40%	$49.10Mn
4	Invesco Ltd.	0000914208	4,029,731	4.81%	▼292,329	-6.76%	$43.72Mn
5	Carlyle Group Inc.	0001527166	3,496,808	4.18%	0	0.00%	$37.94Mn
6	MILLENNIUM MANAGEMENT LLC	0001273087	3,375,834	4.03%	▼647,075	-16.08%	$36.63Mn
7	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,656,944	3.17%	▲73,308	+2.84%	$28.83Mn
8	GW&K Investment Management, LLC	0001082917	2,166,838	2.59%	▲745,729	+52.48%	$23.51K
9	Franklin Templeton Inc	0000038777	1,970,828	2.35%	▲976,324	+98.17%	$21.38Mn
10	NEA Management Company, LLC	0001512848	1,960,169	2.34%	0	0.00%	$21.27Mn
11	683 Capital Management, LLC	0001404574	1,850,000	2.21%	0	0.00%	$20.07Mn
12	Goldman Sachs Group Inc	0000886982	1,778,032	2.12%	▲1,151,836	+183.94%	$19.29Mn
13	State Street Corp	0000093751	1,586,323	1.89%	▲199,433	+14.38%	$17.21Mn
14	Catalys Pacific, LLC	0002011385	1,493,854	1.78%	0	0.00%	$16.21Mn
15	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	0000921739	1,462,738	1.75%	▲257,369	+21.35%	$15.87Mn
16	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,315,687	1.57%	▼12,358	-0.93%	$14.28Mn
17	WASATCH ADVISORS LP	0000814133	1,307,247	1.56%	▼33,669	-2.51%	$14.18Mn
18	Ensign Peak Advisors, Inc	0001454984	1,051,913	1.26%	▼575,893	-35.38%	$11.41Mn
19	Propel Bio Management, LLC	0001969764	1,050,358	1.25%	▲209,086	+24.85%	$11.40Mn
20	Point72 Asset Management, L.P.	0001603466	1,022,193	1.22%	▲1,022,193	0.00%	$11.09Mn

Showing 1 to 20 of 163 holders