Phathom PharmaceuticalsPHAT
13F holders, Q3 2025 (September 30)133holders +16
27new positions
10sold out
4famous investors
$11.77avg. 13F price*
At the end of Q3 2025, 133 institutions reported holding Phathom Pharmaceuticals Inc. (PHAT) in their 13F filings, up 16 from Q2 2025. 27 opened new positions and 10 sold out. The largest holders were Frazier Life Sciences Management, L.P. ($146.7M), Medicxi Ventures Management (Jersey) Ltd ($87.9M) and Millennium Management ($59.8M). 4 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Phathom Pharmaceuticals Inc.
- CUSIP
- 71722W107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 27 | $29.1M |
| Exits | 10 | $4.7M |
All 13F filers, Q2 2025 → Q3 2025: 8,041,688 shares bought and 3,077,549 shares sold, net +4,964,139 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 133 holders
| Frazier Life Sciences Management, L.P. | 4.41% | No change | 12,466,489 | $146.7M |
| Medicxi Ventures Management (Jersey) Ltd | 11.80% | No change | 7,464,572 | $87.9M |
| Millennium Management | 0.05% | Add +125.8% | 5,081,451 | $59.8M |
| Invesco Ltd. | 0.01% | Reduce -6.6% | 3,864,971 | $45.5M |
| Carlyle Group Inc. | 0.95% | No change | 3,496,808 | $41.1M |
| BlackRock, Inc. | 0.00% | Add +2.6% | 3,402,324 | $40.0M |
| Vanguard Group Inc. | 0.00% | Add +15.4% | 3,215,572 | $37.8M |
| Ensign Peak Advisors, Inc | 0.05% | Reduce -0.7% | 2,503,344 | $29.5M |
| NEA Management Company, LLC | 1.27% | No change | 1,960,169 | $23.1M |
| 683 Capital Management, LLC | 2.04% | Reduce -13.5% | 1,820,380 | $21.4M |
| Wasatch Advisors LP | 0.10% | Add +5.2% | 1,537,218 | $18.1M |
| Catalys Pacific, LLC | 3.91% | No change | 1,167,114 | $13.7M |
| GW&K Investment Management, LLC | 0.12% | Add +9.1% | 1,144,330 | $13.5M |
| Catalio Capital Management, LP | 2.46% | Add +67.9% | 1,128,521 | $13.3M |
| Geode Capital Management, LLC | 0.00% | Add +1.8% | 1,088,910 | $12.8M |
| State Street Corp. | 0.00% | Add +24.0% | 1,053,591 | $12.4M |
| Moore Capital Management, LP | 0.14% | No change | 600,000 | $7.1M |
| Ameriprise Financial Inc. | 0.00% | Add +206.7% | 554,590 | $6.5M |
| Propel Bio Management, LLC | 6.51% | Reduce -40.1% | 552,927 | $6.5M |
| Citadel Advisors | 0.00% | New | 508,720 | $6.0M |
| AIGH Capital Management LLC | 1.77% | New | 429,000 | $5.0M |
| StepStone Group LP | 2.47% | No change | 422,085 | $5.0M |
| SummitTX Capital, L.P. | 0.19% | New | 385,968 | $4.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +1.6% | 365,904 | $4.3M |
| Northern Trust Corp. | 0.00% | Reduce -0.5% | 357,578 | $4.2M |
| UBS Group AG | 0.00% | Reduce -19.3% | 338,360 | $4.0M |
| Simplify Asset Management Inc. | 0.08% | Reduce -38.3% | 321,935 | $3.8M |
| Avidity Partners Management LP | 0.82% | Reduce -71.3% | 306,000 | $3.6M |
| Balyasny Asset Management L.P. | 0.01% | Add +2139.1% | 295,161 | $3.5M |
| Walleye Capital LLC | 0.03% | New | 290,467 | $3.4M |
| Susquehanna Portfolio Strategies, LLC | 0.05% | No change | 267,962 | $3.2M |
| Morgan Stanley | 0.00% | Add +65.0% | 255,573 | $3.0M |
| Bank of America Corp. | 0.00% | Add +159.3% | 249,094 | $2.9M |
| NewEdge Advisors, LLC | 0.01% | New | 201,523 | $2.2M |
| Woodline Partners LP | 0.01% | No change | 187,291 | $2.2M |
| Royal Bank of Canada | 0.00% | Add +2.9% | 162,443 | $1.9M |
| Susquehanna International Group, LLP | 0.00% | Add +14.9% | 154,277 | $1.8M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -21.0% | 152,032 | $1.8M |
| Wellington Management Group LLP | 0.00% | New | 146,459 | $1.7M |
| JPMorgan Chase & Co. | 0.00% | Reduce -1.1% | 136,948 | $1.6M |
| Barclays PLC | 0.00% | Add +56.2% | 128,356 | $1.5M |
| Bank of New York Mellon Corp | 0.00% | Add +5.1% | 127,382 | $1.5M |
| Nuveen, LLC | 0.00% | No change | 110,110 | $1.3M |
| Jane Street Group, LLC | 0.00% | New | 107,262 | $1.3M |
| Gilder Gagnon Howe & Co. LLC | 0.01% | Add +182.4% | 88,542 | $1.0M |
| Birchview Capital, LP | 0.76% | Add +240.0% | 85,000 | $1.0M |
| Trexquant Investment LP | 0.01% | New | 78,183 | $920K |
| Creative Planning | 0.00% | Add +36.3% | 78,058 | $919K |
| ExodusPoint Capital Management, LP | 0.01% | Add +370.6% | 71,275 | $839K |
| Gsa Capital Partners LLP | 0.07% | New | 70,258 | $827K |
| Penn Mutual Asset Management | 1.81% | No change | 62,802 | $739K |
| Rhumbline Advisers | 0.00% | Reduce -4.4% | 61,713 | $726K |
| Brevan Howard Capital Management LP | 0.01% | Add +108.7% | 58,097 | $684K |
| Inspirion Wealth Advisors, LLC | 0.09% | Add +84.9% | 36,634 | $662K |
| AlphaQuest LLC | 0.04% | Add +69.5% | 54,594 | $643K |
| XTX Topco Ltd | 0.03% | Add +280.9% | 54,587 | $642K |
| Wells Fargo & Company | 0.00% | Add +14.9% | 53,648 | $631K |
| AQR Capital Management | 0.00% | Add +5.4% | 52,629 | $619K |
| Alliancebernstein L.P. | 0.00% | Reduce -9.9% | 45,590 | $537K |
| Virtus Investment Advisers, LLC | 0.15% | No change | 44,306 | $521K |
| ADAR1 Capital Management, LLC | 0.05% | Reduce -32.4% | 42,900 | $505K |
| Caxton Associates LLP | 0.01% | New | 38,570 | $454K |
| Tudor Investment Corporation | 0.00% | New | 34,090 | $401K |
| T. Rowe Price Associates Inc. | 0.00% | Add +6.0% | 31,919 | $376K |
| PharVision Advisers, LLC | 0.21% | New | 30,968 | $364K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -3.0% | 30,616 | $360K |
| Quadrature Capital Ltd | 0.00% | New | 30,272 | $356K |
| Kera Capital Partners, Inc. | 0.05% | No change | 30,059 | $354K |
| Occidental Asset Management, LLC | 0.04% | No change | 29,672 | $349K |
| Deutsche Bank AG | 0.00% | Add +13.4% | 29,572 | $348K |
| MetLife Investment Management, LLC | 0.00% | No change | 25,845 | $304K |
| Tocqueville Asset Management L.P. | 0.00% | New | 24,700 | $291K |
| Summit Financial Wealth Advisors, LLC | 0.04% | No change | 22,143 | $272K |
| HRT Financial LP | 0.00% | New | 22,521 | $265K |
| Intech Investment Management LLC | 0.00% | Reduce -23.6% | 21,541 | $254K |
| Allworth Financial LP | 0.00% | No change | 20,448 | $241K |
| Simplex Trading, LLC | 0.01% | New | 19,960 | $234K |
| Stifel Financial Corp. | 0.00% | Reduce -2.9% | 19,867 | $234K |
| Axq Capital, LP | 0.09% | Add +45.8% | 19,862 | $234K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -16.9% | 19,402 | $228K |
| OMERS ADMINISTRATION Corp | 0.00% | New | 16,500 | $194K |
| Fiduciary Trust Co | 0.00% | Add +47.8% | 16,115 | $190K |
| Kestra Private Wealth Services, LLC | 0.00% | No change | 15,500 | $182K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -7.7% | 14,612 | $172K |
| Private Advisor Group, LLC | 0.00% | No change | 14,580 | $172K |
| Citigroup Inc. | 0.00% | Reduce -97.4% | 13,635 | $160K |
| Raymond James Financial Inc. | 0.00% | Add +322.0% | 13,394 | $158K |
| China Universal Asset Management Co., Ltd. | 0.01% | Reduce -11.3% | 12,435 | $146K |
| Profund Advisors LLC | 0.00% | New | 12,170 | $143K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +44.5% | 11,925 | $140K |
| Susquehanna Fundamental Investments, LLC | 0.01% | No change | 11,473 | $135K |
| Osaic Holdings, Inc. | 0.00% | Reduce -2.6% | 10,952 | $130K |
| New York State Common Retirement Fund | 0.00% | No change | 10,770 | $127K |
| Pathstone Holdings, LLC | 0.00% | New | 10,322 | $121K |
| Quantbot Technologies LP | 0.00% | New | 9,797 | $115K |
| BNP Paribas Financial Markets | 0.00% | Add +74.0% | 8,828 | $104K |
| US Bancorp \de | 0.00% | Add +2527.1% | 7,277 | $86K |
| Quarry LP | 0.02% | Add +584.3% | 7,007 | $82K |
| FMR LLC | 0.00% | Add +19.0% | 6,999 | $82K |
| Russell Investments Group, Ltd. | 0.00% | Add +132.5% | 6,362 | $75K |
"% of holder's portfolio" is PHAT's weight in each manager's 13F, not the share of Phathom Pharmaceuticals Inc. the manager owns.