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, Q2 2025
Institutional positions in Phathom Pharmaceuticals, Inc. as of Jun 30, 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
- 117
- −19 vs. Q1 2025
- Shares held
- 57.4M
- −6.62M (−10.3%) vs. Q1 2025
- Total value
- $550.5M
- +$149.1M (+37.1%) vs. Q1 2025
- New holders
- 17
- 43 more added
- Sold out
- 36
- 37 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Phathom Pharmaceuticals, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| State Street Corp | 849,424 | $8.15M | 0.00% | −51,930−5.8% | Reduced |
| Propel Bio Management, LLC | 922,927 | $8.85M | 10.74% | −212,000−18.7% | Reduced |
| GW&K Investment Management, LLC | 1,048,472 | $10.1M | 0.09% | −55,836−5.1% | Reduced |
| Avidity Partners Management LP | 1,064,500 | $10.2M | 2.05% | +264,500+33.1% | Added |
| Geode Capital Management, LLC | 1,069,927 | $10.3M | 0.00% | +53,504+5.3% | Added |
| Catalys Pacific, LLC | 1,167,114 | $11.2M | 8.50% | 00.0% | Unchanged |
| Wasatch Advisors Inc | 1,461,895 | $14.0M | 0.07% | −239,732−14.1% | Reduced |
| NEA Management Company, LLC | 1,960,169 | $18.8M | 1.42% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 2,105,000 | $20.2M | 2.05% | +660,000+45.7% | Added |
| Millennium Management LLC | 2,250,497 | $21.6M | 0.02% | +1,727,134+330.0% | Added |
| Ensign Peak Advisors, Inc | 2,519,972 | $24.2M | 0.04% | +5,688+0.2% | Added |
| Vanguard Group Inc | 2,787,311 | $26.7M | 0.00% | +8,624+0.3% | Added |
| BlackRock, Inc. | 3,315,348 | $31.8M | 0.00% | −8,255−0.2% | Reduced |
| Carlyle Group Inc. | 3,496,808 | $33.5M | 0.67% | 00.0% | Unchanged |
| Invesco Ltd. | 4,140,072 | $39.7M | 0.01% | +489,260+13.4% | Added |
| Medicxi Ventures Management (Jersey) Ltd | 7,464,572 | $71.6M | 16.75% | 00.0% | Unchanged |
| Frazier Life Sciences Management, L.P. | 12,466,489 | $119.6M | 4.78% | +2,357,210+23.3% | Added |
| Jennison Associates LLC | 0 | $0 | 0.00% | −7,042,325−100.0% | Sold out |
| Tang Capital Management LLC | 0 | $0 | 0.00% | −1,200,000−100.0% | Sold out |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −596,108−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −568,630−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −398,751−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −314,873−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −200,690−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −179,721−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −99,744−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −97,327−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −73,300−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −60,056−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −33,297−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −26,623−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −26,307−100.0% | Sold out |
| Keybank National Association | 0 | $0 | 0.00% | −25,512−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −22,474−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −19,532−100.0% | Sold out |
| Corton Capital Inc. | 0 | $0 | 0.00% | −18,384−100.0% | Sold out |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0 | $0 | 0.00% | −15,710−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −10,768−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −10,394−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −10,122−100.0% | Sold out |
| KLP Kapitalforvaltning AS | 0 | $0 | 0.00% | −9,100−100.0% | Sold out |
| Great West Life Assurance Co | 0 | $0 | 0.00% | −2,839−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −2,404−100.0% | Sold out |
| Public Employees Retirement Association of Colorado | 0 | $0 | 0.00% | −840−100.0% | Sold out |
| Signaturefd, LLC | 0 | $0 | 0.00% | −463−100.0% | Sold out |
| Versant Capital Management, Inc | 0 | $0 | 0.00% | −197−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −113−100.0% | Sold out |
| Coldstream Capital Management Inc | 0 | $0 | 0.00% | −109−100.0% | Sold out |
| Parkside Financial Bank & Trust | 0 | $0 | 0.00% | −85−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −84−100.0% | Sold out |
| Rothschild Investment LLC | 0 | $0 | 0.00% | −35−100.0% | Sold out |
| Boston Private Wealth LLC | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −42−100.0% | Sold out |
| Lindbrook Capital, LLC | – | – | – | – | Not filed |