Phathom Pharmaceuticals, Inc.
PHAT- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001783183
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.
13F holders, Q4 2025
Institutional positions in Phathom Pharmaceuticals, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 173
- +40 vs. Q3 2025
- Shares held
- 62.0M
- −370.1K (−0.6%) vs. Q3 2025
- Total value
- $1.03B
- +$291.9M (+39.8%) vs. Q3 2025
- New holders
- 50
- 49 more added
- Sold out
- 10
- 50 more reduced
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PHAT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 161 | $782.1M |
| Q1 2026 | 174 | $765.5M |
| Q4 2025 | 173 | $1.03B |
| Q3 2025 | 133 | $733.6M |
| Q2 2025 | 117 | $550.5M |
| Q1 2025 | 137 | $401.4M |
| Q4 2024 | 144 | $541.2M |
| Q3 2024 | 133 | $1.31B |
| Q2 2024 | 114 | $598.6M |
| Q1 2024 | 114 | $588.2M |
| Q4 2023 | 117 | $503.3M |
| Q3 2023 | 110 | $452.7M |
| Q2 2023 | 103 | $612.6M |
| Q1 2023 | 84 | $219.7M |
| Q4 2022 | 87 | $316.6M |
| Q3 2022 | 94 | $334.3M |
| Q2 2022 | 94 | $230.0M |
| Q1 2022 | 82 | $349.1M |
| Q4 2021 | 83 | $562.0M |
| Q3 2021 | 84 | $819.8M |
| Q2 2021 | 79 | $843.6M |
| Q1 2021 | 84 | $919.2M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Phathom Pharmaceuticals, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 12,466,489 | $206.8M | 5.55% | 00.0% | Unchanged |
| Medicxi Ventures Management (Jersey) Ltd | 7,464,572 | $123.8M | 14.83% | 00.0% | Unchanged |
| Invesco Ltd. | 3,920,446 | $65.0M | 0.01% | +55,475+1.4% | Added |
| BlackRock, Inc. | 3,555,548 | $59.0M | 0.00% | +153,224+4.5% | Added |
| Carlyle Group Inc. | 3,496,808 | $58.0M | 0.43% | 00.0% | Unchanged |
| Vanguard Group Inc | 3,177,211 | $52.7M | 0.00% | −38,361−1.2% | Reduced |
| Ensign Peak Advisors, Inc | 2,352,020 | $39.0M | 0.07% | −151,324−6.0% | Reduced |
| Millennium Management LLC | 2,082,180 | $34.5M | 0.02% | −2,999,271−59.0% | Reduced |
| NEA Management Company, LLC | 1,960,169 | $32.5M | 1.66% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 1,785,000 | $29.6M | 2.46% | −35,380−1.9% | Reduced |
| Catalys Pacific, LLC | 1,429,014 | $23.7M | 7.63% | +261,900+22.4% | Added |
| Wasatch Advisors Inc | 1,331,669 | $22.1M | 0.13% | −205,549−13.4% | Reduced |
| GW&K Investment Management, LLC | 1,306,678 | $21.7M | 0.19% | +162,348+14.2% | Added |
| State Street Corp | 1,149,536 | $19.1M | 0.00% | +95,945+9.1% | Added |
| Geode Capital Management, LLC | 1,073,434 | $17.8M | 0.00% | −15,476−1.4% | Reduced |
| Propel Bio Management, LLC | 740,918 | $12.3M | 10.49% | +187,991+34.0% | Added |
| Catalio Capital Management, LP | 698,996 | $11.6M | 2.05% | −429,525−38.1% | Reduced |
| Divisadero Street Capital Management, LP | 662,312 | $11.0M | 0.63% | +662,312 | New |
| Moore Capital Management, LP | 600,000 | $9.95M | 0.20% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 549,171 | $9.11M | 0.01% | +394,894+256.0% | Added |
| SummitTX Capital, L.P. | 517,820 | $8.59M | 0.26% | +131,852+34.2% | Added |
| Charles Schwab Investment Management Inc | 397,910 | $6.60M | 0.00% | +32,006+8.7% | Added |
| Next Century Growth Investors LLC | 393,774 | $6.53M | 0.45% | +393,774 | New |
| Goldman Sachs Group Inc | 392,045 | $6.50M | 0.00% | +240,013+157.9% | Added |
| Jane Street Group, LLC | 384,770 | $6.38M | 0.01% | +277,508+258.7% | Added |
| Northern Trust Corp | 356,466 | $5.91M | 0.00% | −1,112−0.3% | Reduced |
| Simplify Asset Management Inc. | 321,935 | $5.34M | 0.09% | 00.0% | Unchanged |
| Citadel Advisors LLC | 311,315 | $5.16M | 0.00% | −197,405−38.8% | Reduced |
| UBS Group AG | 304,383 | $5.05M | 0.00% | −33,977−10.0% | Reduced |
| StepStone Group LP | 422,085 | $4.97M | 2.66% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 296,684 | $4.92M | 0.00% | +159,736+116.6% | Added |
| Brevan Howard Capital Management LP | 276,989 | $4.60M | 0.09% | +218,892+376.8% | Added |
| Susquehanna Portfolio Strategies, LLC | 267,962 | $4.45M | 0.07% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 261,068 | $4.33M | 0.00% | +261,068 | New |
| Bank of America Corp | 258,996 | $4.30M | 0.00% | +9,902+4.0% | Added |
| Balyasny Asset Management LLC | 207,085 | $3.44M | 0.01% | −88,076−29.8% | Reduced |
| Avidity Partners Management LP | 206,076 | $3.42M | 0.99% | −99,924−32.7% | Reduced |
| Birchview Capital, LP | 195,000 | $3.24M | 1.89% | +110,000+129.4% | Added |
| GWM Advisors LLC | 200,823 | $3.16M | 0.01% | −700−0.3% | Reduced |
| Woodline Partners LP | 187,291 | $3.11M | 0.01% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 185,744 | $3.08M | 0.00% | −368,846−66.5% | Reduced |
| Caxton Associates LLP | 181,968 | $3.02M | 0.06% | +143,398+371.8% | Added |
| Hussman Strategic Advisors, Inc. | 147,000 | $2.44M | 0.59% | +147,000 | New |
| Gilder Gagnon Howe & Co LLC | 145,174 | $2.41M | 0.03% | +56,632+64.0% | Added |
| Trexquant Investment LP | 136,824 | $2.27M | 0.02% | +58,641+75.0% | Added |
| Wellington Management Group LLP | 134,546 | $2.23M | 0.00% | −11,913−8.1% | Reduced |
| Bank of New York Mellon Corp | 122,967 | $2.04M | 0.00% | −4,415−3.5% | Reduced |
| Morgan Stanley | 117,781 | $1.95M | 0.00% | −137,792−53.9% | Reduced |
| Campbell & CO Investment Adviser LLC | 115,284 | $1.91M | 0.09% | +115,284 | New |
| Hennion & Walsh Asset Management, Inc. | 114,981 | $1.91M | 0.07% | +114,981 | New |
| Nuveen, LLC | 108,846 | $1.81M | 0.00% | −1,264−1.1% | Reduced |
| Group One Trading, L.P. | 103,684 | $1.72M | 0.05% | +99,436+2,340.8% | Added |
| VARCOV Co. | 86,759 | $1.44M | 0.57% | +86,759 | New |
| Barclays PLC | 84,859 | $1.41M | 0.00% | −43,497−33.9% | Reduced |
| Swiss National Bank | 84,000 | $1.39M | 0.00% | +84,000 | New |
| Gsa Capital Partners LLP | 82,624 | $1.37M | 0.12% | +12,366+17.6% | Added |
| Creative Planning | 80,766 | $1.34M | 0.00% | +2,708+3.5% | Added |
| Wells Fargo & Company | 68,016 | $1.13M | 0.00% | +14,368+26.8% | Added |
| Penn Mutual Asset Management, LLC | 62,802 | $1.04M | 0.62% | 00.0% | Unchanged |
| Dark Forest Capital Management LP | 62,248 | $1.03M | 0.05% | +62,248 | New |
| Two Sigma Investments, LP | 57,783 | $958.6K | 0.00% | +57,783 | New |
| AQR Capital Management LLC | 54,448 | $903.3K | 0.00% | +1,819+3.5% | Added |
| Rhumbline Advisers | 52,093 | $864.2K | 0.00% | −9,620−15.6% | Reduced |
| Stifel Financial Corp | 51,661 | $857.1K | 0.00% | +31,794+160.0% | Added |
| Stratos Wealth Partners, LTD. | 50,300 | $834.5K | 0.01% | +50,300 | New |
| Alliancebernstein L.P. | 49,390 | $819.4K | 0.00% | +3,800+8.3% | Added |
| Virtus Investment Advisers, Inc. | 46,937 | $778.7K | 0.21% | +2,631+5.9% | Added |
| Engineers Gate Manager LP | 44,258 | $734.2K | 0.01% | +44,258 | New |
| ADAR1 Capital Management, LLC | 42,900 | $711.7K | 0.05% | 00.0% | Unchanged |
| Southeast Asset Advisors Inc. | 42,874 | $711.3K | 0.07% | +42,874 | New |
| New York State Common Retirement Fund | 41,756 | $692.7K | 0.00% | +30,986+287.7% | Added |
| California State Teachers Retirement System | 40,143 | $666.0K | 0.00% | +37,252+1,288.6% | Added |
| XTX Topco Ltd | 39,400 | $653.6K | 0.02% | −15,187−27.8% | Reduced |
| Price T Rowe Associates Inc | 37,071 | $616.0K | 0.00% | +5,152+16.1% | Added |
| Tocqueville Asset Management L.P. | 34,700 | $575.7K | 0.01% | +10,000+40.5% | Added |
| Legal & General Group Plc | 34,249 | $568.2K | 0.00% | +30,162+738.0% | Added |
| Deutsche Bank AG | 33,380 | $553.8K | 0.00% | +3,808+12.9% | Added |
| Schonfeld Strategic Advisors LLC | 30,944 | $513.4K | 0.00% | +30,944 | New |
| Commonwealth Equity Services, LLC | 30,940 | $513.3K | 0.00% | +324+1.1% | Added |
| UBS Asset Management Americas Inc | 30,631 | $508.2K | 0.00% | +30,631 | New |
| Y-Intercept (Hong Kong) Ltd | 30,488 | $505.8K | 0.01% | +30,488 | New |
| Occidental Asset Management, LLC | 29,919 | $496.4K | 0.06% | +247+0.8% | Added |
| Tudor Investment Corp Et Al | 28,554 | $473.7K | 0.00% | −5,536−16.2% | Reduced |
| Citigroup Inc | 28,459 | $472.1K | 0.00% | +14,824+108.7% | Added |
| Quest Partners LLC | 28,250 | $468.7K | 0.03% | −26,344−48.3% | Reduced |
| HRT Financial LP | 27,010 | $448.0K | 0.00% | +4,489+19.9% | Added |
| Los Angeles Capital Management LLC | 33,425 | $444.9K | 0.00% | +33,425 | New |
| MetLife Investment Management | 25,845 | $428.8K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 24,390 | $404.6K | 0.00% | +10,996+82.1% | Added |
| Royal Bank of Canada | 22,554 | $374.0K | 0.00% | −139,889−86.1% | Reduced |
| ExodusPoint Capital Management, LP | 22,401 | $371.6K | 0.00% | −48,874−68.6% | Reduced |
| Summit Financial Wealth Advisors, LLC | 22,143 | $367.4K | 0.05% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 22,185 | $367.0K | 0.00% | +22,185 | New |
| Jain Global LLC | 21,737 | $360.6K | 0.00% | +21,737 | New |
| Janus Henderson Group PLC | 21,500 | $356.6K | 0.00% | +21,500 | New |
| Fox Run Management, L.L.C. | 20,487 | $339.9K | 0.05% | +20,487 | New |
| Kera Capital Partners, Inc. | 24,255 | $331.6K | 0.04% | −5,804−19.3% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 19,890 | $330.0K | 0.00% | +19,890 | New |
| Inspirion Wealth Advisors, LLC | 19,814 | $328.7K | 0.04% | −16,820−45.9% | Reduced |
| Intech Investment Management LLC | 19,051 | $316.1K | 0.00% | −2,490−11.6% | Reduced |