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, Q3 2025
Institutional positions in Phathom Pharmaceuticals, Inc. as of Sep 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
- 133
- +16 vs. Q2 2025
- Shares held
- 62.3M
- +4.93M (+8.6%) vs. Q2 2025
- Total value
- $733.6M
- +$183.1M (+33.3%) vs. Q2 2025
- New holders
- 27
- 45 more added
- Sold out
- 11
- 28 more reduced
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Phathom Pharmaceuticals, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Leonteq Securities AG | 4,800 | $56.5K | 0.00% | +4,800 | New |
| Group One Trading, L.P. | 4,248 | $50.0K | 0.00% | +4,248 | New |
| Canada Pension Plan Investment Board | 4,100 | $48.3K | 0.00% | +4,100 | New |
| Legal & General Group Plc | 4,087 | $48.1K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 3,527 | $41.5K | 0.00% | −784−18.2% | Reduced |
| California State Teachers Retirement System | 2,891 | $34.0K | 0.00% | +2+0.1% | Added |
| Mirae Asset Global Investments Co., Ltd. | 2,743 | $32.3K | 0.00% | +46+1.7% | Added |
| Jones Financial Companies LLLP | 2,523 | $29.7K | 0.00% | +2,058+442.6% | Added |
| Sterling Capital Management LLC | 2,159 | $25.4K | 0.00% | +1,256+139.1% | Added |
| Huntington National Bank | 2,022 | $23.8K | 0.00% | +434+27.3% | Added |
| CWM, LLC | 1,968 | $23.0K | 0.00% | −125−6.0% | Reduced |
| Tower Research Capital LLC (TRC) | 1,562 | $18.4K | 0.00% | −4,148−72.6% | Reduced |
| The PNC Financial Services Group, Inc. | 1,548 | $18.2K | 0.00% | +201+14.9% | Added |
| GF Fund Management Co. Ltd. | 1,526 | $18.0K | 0.00% | −225−12.8% | Reduced |
| Amalgamated Bank | 1,354 | $16.0K | 0.00% | 00.0% | Unchanged |
| Bear Mountain Capital, Inc. | 1,000 | $14.0K | 0.00% | 00.0% | Unchanged |
| C M Bidwell & Associates Ltd | 1,122 | $13.2K | 0.01% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 1,073 | $12.6K | 0.00% | +1,073 | New |
| Larson Financial Group LLC | 647 | $7.62K | 0.00% | 00.0% | Unchanged |
| Optiver Holding B.V. | 584 | $6.87K | 0.00% | +584 | New |
| GAMMA Investing LLC | 360 | $4.24K | 0.00% | +336+1,400.0% | Added |
| Farther Finance Advisors, LLC | 342 | $4.03K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 287 | $3.38K | 0.00% | +287 | New |
| Daiwa Securities Group Inc. | 260 | $3.00K | 0.00% | 00.0% | Unchanged |
| Fortitude Family Office, LLC | 208 | $2.45K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 188 | $2.21K | 0.00% | −870−82.2% | Reduced |
| Parallel Advisors, LLC | 186 | $2.19K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 88 | $1.04K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 71 | $836 | 0.00% | −8−10.1% | Reduced |
| SRS Capital Advisors, Inc. | 59 | $695 | 0.00% | +59 | New |
| SBI Securities Co., Ltd. | 23 | $271 | 0.00% | −105−82.0% | Reduced |
| ZRC Wealth Management, LLC | 20 | $236 | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 16 | $0 | 0.00% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −306,399−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −90,781−100.0% | Sold out |
| Diadema Partners LP | 0 | $0 | 0.00% | −40,294−100.0% | Sold out |
| Nebula Research & Development LLC | 0 | $0 | 0.00% | −37,937−100.0% | Sold out |
| Voya Investment Management LLC | 0 | $0 | 0.00% | −11,823−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −11,600−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −11,265−100.0% | Sold out |
| Staley Capital Advisers Inc | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Persistent Asset Partners Ltd | 0 | $0 | 0.00% | −9,421−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −2,718−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −11−100.0% | Sold out |