Phathom PharmaceuticalsPHAT
13F holders, Q4 2025 (December 31)173holders +40
46new positions
10sold out
5famous investors
$16.55avg. 13F price*
At the end of Q4 2025, 173 institutions reported holding Phathom Pharmaceuticals Inc. (PHAT) in their 13F filings, up 40 from Q3 2025. 46 opened new positions and 10 sold out. The largest holders were Frazier Life Sciences Management, L.P. ($206.8M), Medicxi Ventures Management (Jersey) Ltd ($123.8M) and Invesco Ltd. ($65.0M). 5 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Phathom Pharmaceuticals Inc.
- CUSIP
- 71722W107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 46 | $41.0M |
| Exits | 10 | $9.7M |
All 13F filers, Q3 2025 → Q4 2025: 5,556,307 shares bought and 6,024,577 shares sold, net −468,270 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 173 holders
| Frazier Life Sciences Management, L.P. | 5.57% | No change | 12,466,489 | $206.8M |
| Medicxi Ventures Management (Jersey) Ltd | 14.83% | No change | 7,464,572 | $123.8M |
| Invesco Ltd. | 0.01% | Add +1.4% | 3,920,446 | $65.0M |
| BlackRock, Inc. | 0.00% | Add +4.5% | 3,555,548 | $59.0M |
| Carlyle Group Inc. | 0.43% | No change | 3,496,808 | $58.0M |
| Vanguard Group Inc. | 0.00% | Reduce -1.2% | 3,177,211 | $52.7M |
| Ensign Peak Advisors, Inc | 0.07% | Reduce -6.0% | 2,352,020 | $39.0M |
| Millennium Management | 0.03% | Reduce -59.0% | 2,082,180 | $34.5M |
| NEA Management Company, LLC | 1.66% | No change | 1,960,169 | $32.5M |
| 683 Capital Management, LLC | 2.59% | Reduce -1.9% | 1,785,000 | $29.6M |
| Catalys Pacific, LLC | 7.63% | Add +22.4% | 1,429,014 | $23.7M |
| Wasatch Advisors LP | 0.13% | Reduce -13.4% | 1,331,669 | $22.1M |
| GW&K Investment Management, LLC | 0.19% | Add +14.2% | 1,306,678 | $21.7M |
| State Street Corp. | 0.00% | Add +9.1% | 1,149,536 | $19.1M |
| Geode Capital Management, LLC | 0.00% | Reduce -1.4% | 1,073,434 | $17.8M |
| Propel Bio Management, LLC | 10.49% | Add +34.0% | 740,918 | $12.3M |
| Catalio Capital Management, LP | 2.05% | Reduce -38.1% | 698,996 | $11.6M |
| Divisadero Street Capital Management, LP | 0.63% | New | 662,312 | $11.0M |
| Moore Capital Management, LP | 0.21% | No change | 600,000 | $10.0M |
| Susquehanna International Group, LLP | 0.01% | Add +256.0% | 549,171 | $9.1M |
| SummitTX Capital, L.P. | 0.26% | Add +34.2% | 517,820 | $8.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +8.8% | 397,910 | $6.6M |
| Next Century Growth Investors LLC | 0.45% | New | 393,774 | $6.5M |
| Goldman Sachs Group Inc. | 0.00% | Add +157.9% | 392,045 | $6.5M |
| Jane Street Group, LLC | 0.01% | Add +258.7% | 384,770 | $6.4M |
| Northern Trust Corp. | 0.00% | Reduce -0.3% | 356,466 | $5.9M |
| Simplify Asset Management Inc. | 0.09% | No change | 321,935 | $5.3M |
| Citadel Advisors | 0.00% | Reduce -38.8% | 311,315 | $5.2M |
| UBS Group AG | 0.00% | Reduce -10.0% | 304,383 | $5.0M |
| StepStone Group LP | 2.70% | No change | 422,085 | $5.0M |
| JPMorgan Chase & Co. | 0.00% | Add +116.6% | 296,684 | $4.9M |
| Brevan Howard Capital Management LP | 0.10% | Add +376.8% | 276,989 | $4.6M |
| Susquehanna Portfolio Strategies, LLC | 0.07% | No change | 267,962 | $4.4M |
| D. E. Shaw & Co. | 0.00% | New | 261,068 | $4.3M |
| Bank of America Corp. | 0.00% | Add +4.0% | 258,996 | $4.3M |
| Balyasny Asset Management L.P. | 0.01% | Reduce -29.8% | 207,085 | $3.4M |
| Avidity Partners Management LP | 0.99% | Reduce -32.6% | 206,076 | $3.4M |
| Birchview Capital, LP | 1.89% | Add +129.4% | 195,000 | $3.2M |
| NewEdge Advisors, LLC | 0.01% | Reduce -0.3% | 200,823 | $3.2M |
| Woodline Partners LP | 0.01% | No change | 187,291 | $3.1M |
| Ameriprise Financial Inc. | 0.00% | Reduce -66.5% | 185,744 | $3.1M |
| Caxton Associates LLP | 0.06% | Add +371.8% | 181,968 | $3.0M |
| Hussman Strategic Advisors, Inc. | 0.59% | New | 147,000 | $2.4M |
| Gilder Gagnon Howe & Co. LLC | 0.03% | Add +64.0% | 145,174 | $2.4M |
| Trexquant Investment LP | 0.02% | Add +75.0% | 136,824 | $2.3M |
| Wellington Management Group LLP | 0.00% | Reduce -8.1% | 134,546 | $2.2M |
| Bank of New York Mellon Corp | 0.00% | Reduce -3.5% | 122,967 | $2.0M |
| Morgan Stanley | 0.00% | Reduce -53.9% | 117,781 | $2.0M |
| Campbell & CO Investment Adviser LLC | 0.09% | New | 115,284 | $1.9M |
| Hennion & Walsh Asset Management, Inc. | 0.07% | New | 114,981 | $1.9M |
| Nuveen, LLC | 0.00% | Reduce -1.1% | 108,846 | $1.8M |
| Group One Trading LLC | 0.05% | Add +2340.8% | 103,684 | $1.7M |
| VARCOV Co. | 0.57% | — | 86,759 | $1.4M |
| Barclays PLC | 0.00% | Reduce -33.9% | 84,859 | $1.4M |
| Swiss National Bank | 0.00% | New | 84,000 | $1.4M |
| Gsa Capital Partners LLP | 0.12% | Add +17.6% | 82,624 | $1.4M |
| Creative Planning | 0.00% | Add +3.5% | 80,766 | $1.3M |
| Wells Fargo & Company | 0.00% | Add +26.8% | 68,016 | $1.1M |
| Penn Mutual Asset Management | 0.65% | No change | 62,802 | $1.0M |
| Dark Forest Capital Management LP | 0.05% | New | 62,248 | $1.0M |
| Two Sigma Investments, LP | 0.00% | New | 57,783 | $959K |
| AQR Capital Management | 0.00% | Add +3.5% | 54,448 | $903K |
| Rhumbline Advisers | 0.00% | Reduce -15.6% | 52,093 | $864K |
| Stifel Financial Corp. | 0.00% | Add +160.0% | 51,661 | $857K |
| Stratos Wealth Partners, LTD. | 0.01% | New | 50,300 | $834K |
| Alliancebernstein L.P. | 0.00% | Add +8.3% | 49,390 | $819K |
| Virtus Investment Advisers, LLC | 0.21% | Add +5.9% | 46,937 | $779K |
| Engineers Gate Manager LP | 0.01% | New | 44,258 | $734K |
| ADAR1 Capital Management, LLC | 0.05% | No change | 42,900 | $712K |
| Southeast Asset Advisors, LLC | 0.07% | New | 42,874 | $711K |
| New York State Common Retirement Fund | 0.00% | Add +287.7% | 41,756 | $693K |
| California State Teachers Retirement System | 0.00% | Add +1288.5% | 40,143 | $666K |
| XTX Topco Ltd | 0.02% | Reduce -27.8% | 39,400 | $654K |
| T. Rowe Price Associates Inc. | 0.00% | Add +16.1% | 37,071 | $616K |
| Tocqueville Asset Management L.P. | 0.01% | Add +40.5% | 34,700 | $576K |
| Legal & General Group Plc | 0.00% | Add +738.0% | 34,249 | $568K |
| Deutsche Bank AG | 0.00% | Add +12.9% | 33,380 | $554K |
| Schonfeld Strategic Advisors LLC | 0.00% | New | 30,944 | $513K |
| Commonwealth Equity Services, LLC | 0.00% | Add +1.1% | 30,940 | $513K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | New | 30,631 | $508K |
| Y-Intercept (Hong Kong) Ltd | 0.01% | New | 30,488 | $506K |
| Occidental Asset Management, LLC | 0.06% | Add +0.8% | 29,919 | $496K |
| Tudor Investment Corporation | 0.00% | Reduce -16.2% | 28,554 | $474K |
| Citigroup Inc. | 0.00% | Add +108.7% | 28,459 | $472K |
| AlphaQuest LLC | 0.03% | Reduce -48.3% | 28,250 | $469K |
| HRT Financial LP | 0.00% | Add +19.9% | 27,010 | $448K |
| Los Angeles Capital Management LLC | 0.00% | New | 33,425 | $445K |
| MetLife Investment Management, LLC | 0.00% | No change | 25,845 | $429K |
| Raymond James Financial Inc. | 0.00% | Add +82.1% | 24,390 | $405K |
| Royal Bank of Canada | 0.00% | Reduce -86.1% | 22,554 | $374K |
| ExodusPoint Capital Management, LP | 0.00% | Reduce -68.6% | 22,401 | $372K |
| Summit Financial Wealth Advisors, LLC | 0.05% | No change | 22,143 | $367K |
| Acadian Asset Management LLC | 0.00% | New | 22,185 | $367K |
| Jain Global LLC | 0.00% | New | 21,737 | $361K |
| Janus Henderson Group PLC | 0.00% | New | 21,500 | $357K |
| Fox Run Management, L.L.C. | 0.05% | New | 20,487 | $340K |
| Kera Capital Partners, Inc. | 0.04% | Reduce -19.3% | 24,255 | $332K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | New | 19,890 | $330K |
| Inspirion Wealth Advisors, LLC | 0.04% | Reduce -45.9% | 19,814 | $329K |
| Intech Investment Management LLC | 0.00% | Reduce -11.6% | 19,051 | $316K |
"% of holder's portfolio" is PHAT's weight in each manager's 13F, not the share of Phathom Pharmaceuticals Inc. the manager owns.