Phathom PharmaceuticalsPHAT
13F holders, Q1 2025 (March 31)137holders −7
24new positions
31sold out
3famous investors
$6.27avg. 13F price*
At the end of Q1 2025, 137 institutions reported holding Phathom Pharmaceuticals Inc. (PHAT) in their 13F filings, down 7 from Q4 2024. 24 opened new positions and 31 sold out. The largest holders were Frazier Life Sciences Management, L.P. ($63.4M), Medicxi Ventures Management (Jersey) Ltd ($46.8M) and Jennison Associates LLC ($44.2M). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Phathom Pharmaceuticals Inc.
- CUSIP
- 71722W107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 24 | $6.5M |
| Exits | 31 | $39.7M |
All 13F filers, Q4 2024 → Q1 2025: 4,669,630 shares bought and 7,277,431 shares sold, net −2,607,801 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 137 holders
| Frazier Life Sciences Management, L.P. | 2.90% | No change | 10,109,279 | $63.4M |
| Medicxi Ventures Management (Jersey) Ltd | 10.69% | No change | 7,464,572 | $46.8M |
| Jennison Associates LLC | 0.03% | Reduce -0.3% | 7,042,325 | $44.2M |
| Invesco Ltd. | 0.00% | Reduce -0.6% | 3,650,812 | $22.9M |
| Carlyle Group Inc. | 0.58% | No change | 3,496,808 | $21.9M |
| BlackRock, Inc. | 0.00% | Reduce -5.1% | 3,323,603 | $20.8M |
| Vanguard Group Inc. | 0.00% | Reduce -0.0% | 2,778,687 | $17.4M |
| Ensign Peak Advisors, Inc | 0.03% | Reduce -0.5% | 2,514,284 | $15.8M |
| NEA Management Company, LLC | 0.95% | No change | 1,960,169 | $12.3M |
| Wasatch Advisors LP | 0.06% | Add +9.2% | 1,701,627 | $10.7M |
| 683 Capital Management, LLC | 1.01% | Add +41.0% | 1,445,000 | $9.1M |
| Tang Capital Management LLC | 0.42% | Add +140.0% | 1,200,000 | $7.5M |
| Catalys Pacific, LLC | 4.92% | No change | 1,167,114 | $7.3M |
| Propel Bio Management, LLC | 8.27% | Add +14.7% | 1,134,927 | $7.1M |
| Morgan Stanley | 0.00% | Add +17.0% | 1,131,032 | $7.1M |
| GW&K Investment Management, LLC | 0.06% | Add +0.1% | 1,104,308 | $6.9M |
| Geode Capital Management, LLC | 0.00% | Reduce -0.2% | 1,016,423 | $6.4M |
| State Street Corp. | 0.00% | Reduce -13.3% | 901,354 | $5.7M |
| Avidity Partners Management LP | 1.03% | Reduce -42.5% | 800,000 | $5.0M |
| Woodline Partners LP | 0.03% | Reduce -25.0% | 751,692 | $4.7M |
| UBS Group AG | 0.00% | Add +52.0% | 707,578 | $4.4M |
| Simplify Asset Management Inc. | 0.20% | Add +17.2% | 681,935 | $4.3M |
| Jacobs Levy Equity Management, Inc. | 0.01% | New | 596,108 | $3.7M |
| Prudential Financial Inc. | 0.01% | Add +22.7% | 568,630 | $3.6M |
| Citigroup Inc. | 0.00% | Add +1090.9% | 530,859 | $3.3M |
| Millennium Management | 0.00% | Add +772.4% | 523,363 | $3.3M |
| FMR LLC | 0.00% | Reduce -36.4% | 509,582 | $3.2M |
| StepStone Group LP | 2.72% | No change | 422,085 | $2.6M |
| Trexquant Investment LP | 0.03% | Add +5.3% | 398,751 | $2.5M |
| Northern Trust Corp. | 0.00% | Reduce -2.9% | 386,623 | $2.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -1.4% | 348,035 | $2.2M |
| Marshall Wace, LLP | 0.00% | Add +221.1% | 314,873 | $2.0M |
| Wellington Management Group LLP | 0.00% | Add +47.6% | 200,690 | $1.3M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -54.4% | 187,874 | $1.2M |
| Citadel Advisors | 0.00% | Add +149.6% | 179,721 | $1.1M |
| Bank of America Corp. | 0.00% | Add +2.3% | 170,281 | $1.1M |
| Susquehanna International Group, LLP | 0.00% | Reduce -31.6% | 161,138 | $1.0M |
| JPMorgan Chase & Co. | 0.00% | Add +0.3% | 137,393 | $861K |
| Bank of New York Mellon Corp | 0.00% | Add +11.5% | 114,535 | $718K |
| AQR Capital Management | 0.00% | Add +508.2% | 107,399 | $673K |
| Nuveen, LLC | 0.00% | — | 101,520 | $637K |
| State of Wisconsin Investment Board | 0.00% | Reduce -24.6% | 99,776 | $626K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -15.3% | 99,744 | $625K |
| Two Sigma Investments, LP | 0.00% | Reduce -80.0% | 97,327 | $610K |
| XTX Topco Ltd | 0.03% | New | 90,191 | $565K |
| ExodusPoint Capital Management, LP | 0.01% | New | 79,311 | $497K |
| Swiss National Bank | 0.00% | No change | 73,300 | $460K |
| Penn Mutual Asset Management | 1.00% | No change | 62,802 | $394K |
| Los Angeles Capital Management LLC | 0.00% | Add +185.0% | 60,056 | $377K |
| Creative Planning | 0.00% | Add +157.9% | 59,937 | $376K |
| Rhumbline Advisers | 0.00% | Add +1.4% | 56,739 | $356K |
| Barclays PLC | 0.00% | Reduce -28.2% | 54,902 | $344K |
| Commonwealth Equity Services, LLC | 0.00% | Add +3.3% | 52,431 | $329K |
| Balyasny Asset Management L.P. | 0.00% | New | 45,831 | $287K |
| Alliancebernstein L.P. | 0.00% | No change | 45,590 | $286K |
| Virtus Investment Advisers, LLC | 0.08% | New | 44,964 | $282K |
| ADAR1 Capital Management, LLC | 0.05% | Reduce -22.7% | 42,800 | $268K |
| Russell Investments Group, Ltd. | 0.00% | New | 41,799 | $262K |
| Gilder Gagnon Howe & Co. LLC | 0.00% | Reduce -0.1% | 41,566 | $261K |
| Legal & General Group Plc | 0.00% | No change | 36,438 | $229K |
| California State Teachers Retirement System | 0.00% | No change | 35,262 | $221K |
| HRT Financial LP | 0.00% | New | 33,297 | $208K |
| Summit Financial Wealth Advisors, LLC | 0.04% | Reduce -54.3% | 31,143 | $195K |
| Kera Capital Partners, Inc. | 0.06% | Add +11.2% | 29,849 | $187K |
| Occidental Asset Management, LLC | 0.03% | No change | 29,672 | $186K |
| Nebula Research & Development LLC | 0.02% | Add +37.5% | 28,821 | $181K |
| Wells Fargo & Company | 0.00% | Add +11.4% | 28,425 | $178K |
| Deutsche Bank AG | 0.00% | Reduce -10.1% | 27,172 | $170K |
| T. Rowe Price Associates Inc. | 0.00% | Add +5.3% | 27,013 | $170K |
| Engineers Gate Manager LP | 0.00% | Reduce -18.1% | 26,623 | $167K |
| Sherbrooke Park Advisers LLC | 0.08% | New | 26,307 | $165K |
| Keybank National Association | 0.00% | No change | 25,512 | $160K |
| MetLife Investment Management, LLC | 0.00% | No change | 24,366 | $153K |
| US Bancorp \de | 0.00% | Add +248.1% | 23,763 | $149K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.6% | 23,163 | $145K |
| Simplex Trading, LLC | 0.01% | Add +316.6% | 22,474 | $140K |
| Intech Investment Management LLC | 0.00% | Add +23.3% | 21,484 | $135K |
| Inspirion Wealth Advisors, LLC | 0.02% | Reduce -0.5% | 19,864 | $125K |
| Corebridge Financial, Inc. | 0.00% | Add +0.1% | 19,532 | $122K |
| Corton Capital Inc. | 0.38% | New | 18,384 | $115K |
| Stifel Financial Corp. | 0.00% | New | 17,398 | $109K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 15,710 | $99K |
| Kestra Private Wealth Services, LLC | 0.00% | No change | 15,500 | $97K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +3.4% | 14,462 | $91K |
| China Universal Asset Management Co., Ltd. | 0.01% | Reduce -5.4% | 13,715 | $86K |
| Allworth Financial LP | 0.00% | Add +0.1% | 20,478 | $84K |
| ProShare Advisors LLC | 0.00% | Reduce -18.0% | 11,714 | $73K |
| Susquehanna Fundamental Investments, LLC | 0.00% | New | 11,473 | $72K |
| Osaic Holdings, Inc. | 0.00% | Add +241.7% | 11,250 | $71K |
| Voya Investment Management LLC | 0.00% | Reduce -5.3% | 11,070 | $69K |
| Fiduciary Trust Co | 0.00% | New | 10,905 | $68K |
| New York State Common Retirement Fund | 0.00% | No change | 10,770 | $68K |
| Arizona State Retirement System | 0.00% | Reduce -1.2% | 10,768 | $68K |
| Atom Investors LP | 0.01% | New | 10,394 | $65K |
| Royal Bank of Canada | 0.00% | Reduce -12.1% | 10,182 | $64K |
| Teacher Retirement System of Texas | 0.00% | Reduce -8.5% | 10,122 | $63K |
| Staley Capital Advisers Inc. | 0.00% | No change | 10,000 | $63K |
| KLP Kapitalforvaltning As | 0.00% | No change | 9,100 | $57K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 8,251 | $52K |
| Cwm, LLC | 0.00% | Add +20997.1% | 7,384 | $46K |
"% of holder's portfolio" is PHAT's weight in each manager's 13F, not the share of Phathom Pharmaceuticals Inc. the manager owns.