Phathom Pharmaceuticals, Inc.

PHAT

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001783183

SEC filings (opens in a new tab)

No open-market purchases or sales by Phathom Pharmaceuticals, Inc. insiders were filed in the last 90 days; 161 institutions reported holding it in 13F filings for Q2 2026, worth $782.1M in total; no superinvestor holds it.

Q1 2025 vs. Q4 2024

How the institutions holding Phathom Pharmaceuticals, Inc. changed between Q4 2024 and Q1 2025.

All holders in Q1 2025 All holders in Q4 2024

13F holders of PHAT: Q4 2024 compared with Q1 2025
Measure	Q4 2024	Of which not filed for Q1 2025	Q1 2025	Change
Holders	144	1	137	−6
Shares	66.7M	147.5K	64.0M	−2.51M (−3.8%)
Value	$541.2M	$1.20M	$401.4M	−$138.6M (−25.7%)

1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (25)

Institutions that held Phathom Pharmaceuticals, Inc. at the end of Q1 2025 but not at the end of Q4 2024.

Institutions new to PHAT in Q1 2025
Institution	Shares	Value	% of portfolio
Jacobs Levy Equity Management, Inc	596,108	$3.74M	0.01%
Nuveen, LLC	101,520	$636.5K	0.00%
XTX Topco Ltd	90,191	$565.5K	0.03%
ExodusPoint Capital Management, LP	79,311	$497.0K	0.01%
Balyasny Asset Management LLC	45,831	$287.4K	0.00%
Virtus Investment Advisers, Inc.	44,964	$281.9K	0.08%
Russell Investments Group, Ltd.	41,799	$262.1K	0.00%
HRT Financial LP	33,297	$208.0K	0.00%
Sherbrooke Park Advisers LLC	26,307	$164.9K	0.08%
Corton Capital Inc.	18,384	$115.3K	0.38%
Stifel Financial Corp	17,398	$109.1K	0.00%
Susquehanna Fundamental Investments, LLC	11,473	$71.9K	0.00%
Fiduciary Trust Co	10,905	$68.4K	0.00%
Atom Investors LP	10,394	$65.2K	0.01%
Skopos Labs, Inc.	3,456	$21.7K	0.00%
Group One Trading, L.P.	2,404	$15.1K	0.00%
Signaturefd, LLC	463	$2.90K	0.00%
Parallel Advisors, LLC	329	$2.06K	0.00%
Versant Capital Management, Inc	197	$1.24K	0.00%
Coldstream Capital Management Inc	109	$684	0.00%
Parkside Financial Bank & Trust	85	$533	0.00%
Quadrant Capital Group LLC	84	$527	0.00%
SBI Securities Co., Ltd.	50	$314	0.00%
Boston Private Wealth LLC	34	$213	0.00%
True Wealth Design, LLC	16	$101	0.00%

Sold out (31)

Institutions that held Phathom Pharmaceuticals, Inc. at the end of Q4 2024 and filed for Q1 2025 without it.

Institutions that sold out of PHAT in Q1 2025
Institution	Shares, Q4 2024	Value, Q4 2024
Checkpoint Capital L.P.	2,274,157	$18.5M
Decheng Capital LLC	694,254	$5.64M
Siren, L.L.C.	460,753	$3.74M
Raymond James Financial Inc	455,837	$3.70M
Cubist Systematic Strategies, LLC	282,553	$2.29M
Oracle Investment Management Inc	145,064	$1.18M
Two Sigma Advisers, LP	133,700	$1.09M
Jane Street Group, LLC	77,869	$632.3K
Qube Research & Technologies Ltd	55,973	$454.5K
Virtus ETF Advisers LLC	43,789	$355.6K
Tudor Investment Corp Et Al	34,049	$276.5K
Dark Forest Capital Management LP	32,029	$260.1K
Aristides Capital LLC	25,200	$204.6K
Brevan Howard Capital Management LP	22,845	$185.5K
Capula Management Ltd	16,083	$130.6K
Canada Pension Plan Investment Board	15,400	$125.0K
Numerai GP LLC	15,264	$123.9K
Gsa Capital Partners LLP	15,173	$123.0K
Bayesian Capital Management, LP	14,900	$121.0K
Stratos Wealth Advisors, LLC	13,438	$109.1K
Virtu Financial LLC	13,424	$109.0K
Profund Advisors LLC	13,310	$108.1K
Versor Investments LP	12,400	$100.7K
Rafferty Asset Management, LLC	11,113	$90.2K
Klingman & Associates, LLC	10,517	$85.4K
Point72 (DIFC) Ltd	1,951	$15.8K
R Squared Ltd	1,061	$8.62K
Greenline Partners, LLC	500	$4.06K
BFSG, LLC	300	$2.44K
Riggs Asset Managment Co. Inc.	69	$552
Aster Capital Management (DIFC) Ltd	15	$122

Not filed for Q1 2025 yet (1)

Institutions that held Phathom Pharmaceuticals, Inc. at the end of Q4 2024 and haven't filed a 13F for Q1 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding PHAT in Q4 2024 that haven't filed for Q1 2025
Institution	Shares, Q4 2024	Value, Q4 2024
Nuveen Asset Management, LLC	147,523	$1.20M