Phathom PharmaceuticalsPHAT
13F holders, Q2 2026 (June 30)161holders −13
20new positions
32sold out
6famous investors
$10.85avg. 13F price*
At the end of Q2 2026, 161 institutions reported holding Phathom Pharmaceuticals Inc. (PHAT) in their 13F filings, down 13 from Q1 2026. 20 opened new positions and 32 sold out. The largest holders were Frazier Life Sciences Management, L.P. ($135.3M), Medicxi Ventures Management (Jersey) Ltd ($81.0M) and BlackRock, Inc. ($49.1M). 6 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Steve Cohen (0.0% of Point72 Asset Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Phathom Pharmaceuticals Inc.
- CUSIP
- 71722W107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 20 | $29.1M |
| Exits | 32 | $13.3M |
All 13F filers, Q1 2026 → Q2 2026: 8,214,097 shares bought and 5,026,869 shares sold, net +3,187,228 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 161 holders
| Frazier Life Sciences Management, L.P. | 2.95% | No change | 12,466,489 | $135.3M |
| Medicxi Ventures Management (Jersey) Ltd | 45.65% | No change | 7,464,572 | $81.0M |
| BlackRock, Inc. | 0.00% | Add +11.4% | 4,525,129 | $49.1M |
| Invesco Ltd. | 0.00% | Reduce -6.8% | 4,029,731 | $43.7M |
| Carlyle Group Inc. | 0.38% | No change | 3,496,808 | $37.9M |
| Millennium Management | 0.03% | Reduce -16.1% | 3,375,834 | $36.6M |
| Vanguard Capital Management LLC | 0.00% | Add +2.8% | 2,656,944 | $28.8M |
| GW&K Investment Management, LLC | 0.18% | Add +52.5% | 2,166,838 | $23.5M |
| Franklin Resources Inc. | 0.00% | Add +98.2% | 1,970,828 | $21.4M |
| NEA Management Company, LLC | 1.34% | No change | 1,960,169 | $21.3M |
| 683 Capital Management, LLC | 1.93% | No change | 1,850,000 | $20.1M |
| Goldman Sachs Group Inc. | 0.00% | Add +183.9% | 1,778,032 | $19.3M |
| State Street Corp. | 0.00% | Add +14.4% | 1,586,323 | $17.2M |
| Catalys Pacific, LLC | 7.06% | No change | 1,493,854 | $16.2M |
| Nomura Asset Management International Inc. | 0.02% | Add +21.4% | 1,462,738 | $15.9M |
| Geode Capital Management, LLC | 0.00% | Reduce -0.9% | 1,315,687 | $14.3M |
| Wasatch Advisors LP | 0.09% | Reduce -2.5% | 1,307,247 | $14.2M |
| Ensign Peak Advisors, Inc | 0.02% | Reduce -35.4% | 1,051,913 | $11.4M |
| Propel Bio Management, LLC | 5.96% | Add +24.9% | 1,050,358 | $11.4M |
| Point72 Asset Management | 0.02% | New | 1,022,193 | $11.1M |
| Vanguard Portfolio Management LLC | 0.00% | Add +19.6% | 796,631 | $8.6M |
| SummitTX Capital, L.P. | 0.23% | Reduce -20.7% | 789,550 | $8.6M |
| HSBC Holdings PLC | 0.00% | New | 709,695 | $7.7M |
| Marshall Wace, LLP | 0.01% | Reduce -22.6% | 666,090 | $7.2M |
| EcoR1 Capital, LLC | 0.34% | No change | 625,000 | $6.8M |
| Perceptive Advisors LLC | 0.09% | Reduce -42.5% | 532,000 | $5.8M |
| Two Sigma Investments, LP | 0.00% | Add +7.7% | 519,076 | $5.6M |
| Northern Trust Corp. | 0.00% | Add +10.4% | 458,301 | $5.0M |
| StepStone Group LP | 0.21% | No change | 422,085 | $4.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +2.5% | 419,094 | $4.5M |
| Woodline Partners LP | 0.01% | No change | 369,052 | $4.0M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +4.7% | 354,573 | $3.8M |
| Hennion & Walsh Asset Management, Inc. | 0.10% | Add +124.3% | 327,278 | $3.6M |
| Ameriprise Financial Inc. | 0.00% | Add +15.6% | 293,979 | $3.2M |
| JPMorgan Chase & Co. | 0.00% | Reduce -4.2% | 275,251 | $3.0M |
| Simplify Asset Management Inc. | 0.04% | Reduce -5.0% | 249,267 | $2.7M |
| Renaissance Technologies | 0.00% | Reduce -26.0% | 226,400 | $2.5M |
| Jane Street Group, LLC | 0.00% | New | 212,706 | $2.3M |
| UBS Group AG | 0.00% | Reduce -43.2% | 204,573 | $2.2M |
| NewEdge Advisors, LLC | 0.01% | Add +11.4% | 203,962 | $2.2M |
| Avidity Partners Management LP | 0.35% | Reduce -19.8% | 200,000 | $2.2M |
| Morgan Stanley | 0.00% | Add +160.7% | 199,909 | $2.2M |
| Jump Financial, LLC | 0.02% | Add +625.5% | 191,866 | $2.1M |
| Opaleye Management Inc. | 0.18% | New | 185,589 | $2.0M |
| Citadel Advisors | 0.00% | Reduce -51.7% | 184,901 | $2.0M |
| Trexquant Investment LP | 0.01% | Reduce -40.7% | 173,884 | $1.9M |
| Jones Hill Capital LP | 0.37% | New | 161,486 | $1.8M |
| Bank of New York Mellon Corp | 0.00% | Add +22.8% | 152,313 | $1.7M |
| Wells Fargo & Company | 0.00% | Add +229.6% | 152,002 | $1.6M |
| Bank of America Corp. | 0.00% | Reduce -27.4% | 151,015 | $1.6M |
| XTX Topco Ltd | 0.02% | Reduce -15.4% | 135,832 | $1.5M |
| AQR Capital Management | 0.00% | Add +143.2% | 134,901 | $1.5M |
| Wellington Management Group LLP | 0.00% | Add +18.4% | 132,284 | $1.4M |
| Diadema Partners LP | 0.53% | Add +137.8% | 129,950 | $1.4M |
| Nuveen, LLC | 0.00% | Add +8.4% | 127,127 | $1.4M |
| Engineers Gate Manager LP | 0.02% | Add +60.1% | 118,257 | $1.3M |
| Virtus Investment Advisers, LLC | 0.28% | Add +93.4% | 112,139 | $1.2M |
| Russell Investments Group, Ltd. | 0.00% | Add +19.9% | 102,754 | $1.1M |
| Schroder Investment Management Group | 0.00% | New | 101,745 | $1.1M |
| Stratos Wealth Partners, LTD. | 0.01% | No change | 100,000 | $1.1M |
| Swiss National Bank | 0.00% | Add +6.7% | 98,800 | $1.1M |
| D. E. Shaw & Co. | 0.00% | Reduce -27.8% | 95,660 | $1.0M |
| Gilder Gagnon Howe & Co. LLC | 0.01% | Reduce -37.0% | 88,134 | $956K |
| Stonepine Capital Management, LLC | 0.70% | Add +70.0% | 85,010 | $922K |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 77,316 | $839K |
| KBC Group NV | 0.00% | No change | 77,139 | $837K |
| Campbell & CO Investment Adviser LLC | 0.04% | Add +10.9% | 68,759 | $746K |
| T. Rowe Price Associates Inc. | 0.00% | Add +25.3% | 65,722 | $714K |
| Penn Mutual Asset Management | 5.43% | No change | 62,802 | $681K |
| State of Wisconsin Investment Board | 0.00% | Add +41.5% | 62,283 | $676K |
| Rhumbline Advisers | 0.00% | Add +8.8% | 60,346 | $655K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | No change | 55,788 | $605K |
| Birchview Capital, LP | 0.28% | Reduce -71.8% | 55,000 | $597K |
| Citigroup Inc. | 0.00% | Add +80.3% | 52,945 | $574K |
| Stifel Financial Corp. | 0.00% | Reduce -2.2% | 52,832 | $573K |
| Creative Planning | 0.00% | Reduce -24.9% | 52,750 | $572K |
| California State Teachers Retirement System | 0.00% | Add +28.8% | 51,787 | $562K |
| Alliancebernstein L.P. | 0.00% | Reduce -0.2% | 49,290 | $548K |
| Deutsche Bank AG | 0.00% | Add +37.7% | 50,205 | $545K |
| Pale Fire Capital SE | 0.04% | New | 49,713 | $539K |
| Man Group plc | 0.00% | Add +60.4% | 48,679 | $528K |
| Raymond James Financial Inc. | 0.00% | Add +82.4% | 48,024 | $521K |
| Persistent Asset Partners Ltd | 0.16% | Add +78.1% | 47,663 | $517K |
| ADAR1 Capital Management, LLC | 0.02% | No change | 42,900 | $465K |
| Quantbot Technologies LP | 0.02% | New | 42,755 | $464K |
| Barclays PLC | 0.00% | Add +64.8% | 41,777 | $453K |
| Nomura Holdings Inc. | 0.00% | New | 40,000 | $434K |
| Y-Intercept (Hong Kong) Ltd | 0.01% | New | 39,845 | $432K |
| Fiduciary Trust Co | 0.00% | Add +97.8% | 35,731 | $388K |
| Allstate Corp. | 0.00% | Add +0.6% | 32,875 | $357K |
| Legal & General Group Plc | 0.00% | Add +2.2% | 32,738 | $355K |
| Squarepoint Ops LLC | 0.00% | Reduce -88.5% | 31,595 | $343K |
| Gsa Capital Partners LLP | 0.02% | Reduce -69.0% | 30,138 | $327K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | No change | 28,506 | $309K |
| MetLife Investment Management, LLC | 0.00% | Add +8.8% | 28,107 | $305K |
| Kera Capital Partners, Inc. | 0.03% | No change | 26,826 | $291K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +3.4% | 25,838 | $280K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.2% | 22,647 | $246K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -30.1% | 22,535 | $245K |
| Summit Financial Wealth Advisors, LLC | 0.03% | No change | 22,143 | $240K |
"% of holder's portfolio" is PHAT's weight in each manager's 13F, not the share of Phathom Pharmaceuticals Inc. the manager owns.