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, Q1 2025
Institutional positions in Phathom Pharmaceuticals, Inc. as of Mar 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
- 137
- −6 vs. Q4 2024
- Shares held
- 64.0M
- −2.51M (−3.8%) vs. Q4 2024
- Total value
- $401.4M
- −$138.6M (−25.7%) vs. Q4 2024
- New holders
- 25
- 47 more added
- Sold out
- 31
- 36 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Phathom Pharmaceuticals, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Susquehanna International Group, LLP | 161,138 | $1.01M | 0.00% | −74,266−31.5% | Reduced |
| Bank of America Corp | 170,281 | $1.07M | 0.00% | +3,776+2.3% | Added |
| Citadel Advisors LLC | 179,721 | $1.13M | 0.00% | +107,714+149.6% | Added |
| Goldman Sachs Group Inc | 187,874 | $1.18M | 0.00% | −224,388−54.4% | Reduced |
| Wellington Management Group LLP | 200,690 | $1.26M | 0.00% | +64,695+47.6% | Added |
| Marshall Wace, LLP | 314,873 | $1.97M | 0.00% | +216,805+221.1% | Added |
| Charles Schwab Investment Management Inc | 348,035 | $2.18M | 0.00% | −5,003−1.4% | Reduced |
| Northern Trust Corp | 386,623 | $2.42M | 0.00% | −11,341−2.8% | Reduced |
| Trexquant Investment LP | 398,751 | $2.50M | 0.03% | +20,114+5.3% | Added |
| StepStone Group LP | 422,085 | $2.65M | 2.72% | 00.0% | Unchanged |
| FMR LLC | 509,582 | $3.20M | 0.00% | −291,819−36.4% | Reduced |
| Millennium Management LLC | 523,363 | $3.28M | 0.00% | +463,372+772.4% | Added |
| Citigroup Inc | 530,859 | $3.33M | 0.00% | +486,282+1,090.9% | Added |
| Prudential Financial Inc | 568,630 | $3.57M | 0.01% | +105,290+22.7% | Added |
| Jacobs Levy Equity Management, Inc | 596,108 | $3.74M | 0.01% | +596,108 | New |
| Simplify Asset Management Inc. | 681,935 | $4.28M | 0.20% | +100,000+17.2% | Added |
| UBS Group AG | 707,578 | $4.44M | 0.00% | +241,962+52.0% | Added |
| Woodline Partners LP | 751,692 | $4.71M | 0.03% | −250,000−25.0% | Reduced |
| Avidity Partners Management LP | 800,000 | $5.02M | 1.03% | −590,100−42.5% | Reduced |
| State Street Corp | 901,354 | $5.65M | 0.00% | −138,582−13.3% | Reduced |
| Geode Capital Management, LLC | 1,016,423 | $6.37M | 0.00% | −2,072−0.2% | Reduced |
| GW&K Investment Management, LLC | 1,104,308 | $6.92M | 0.06% | +1,503+0.1% | Added |
| Morgan Stanley | 1,131,032 | $7.09M | 0.00% | +164,632+17.0% | Added |
| Propel Bio Management, LLC | 1,134,927 | $7.12M | 8.27% | +145,000+14.6% | Added |
| Catalys Pacific, LLC | 1,167,114 | $7.32M | 4.92% | 00.0% | Unchanged |
| Tang Capital Management LLC | 1,200,000 | $7.52M | 0.42% | +700,000+140.0% | Added |
| 683 Capital Management, LLC | 1,445,000 | $9.06M | 0.92% | +420,000+41.0% | Added |
| Wasatch Advisors Inc | 1,701,627 | $10.7M | 0.06% | +142,699+9.2% | Added |
| NEA Management Company, LLC | 1,960,169 | $12.3M | 0.95% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 2,514,284 | $15.8M | 0.03% | −12,770−0.5% | Reduced |
| Vanguard Group Inc | 2,778,687 | $17.4M | 0.00% | −8740.0% | Reduced |
| BlackRock, Inc. | 3,323,603 | $20.8M | 0.00% | −178,772−5.1% | Reduced |
| Carlyle Group Inc. | 3,496,808 | $21.9M | 0.58% | 00.0% | Unchanged |
| Invesco Ltd. | 3,650,812 | $22.9M | 0.00% | −20,574−0.6% | Reduced |
| Jennison Associates LLC | 7,042,325 | $44.2M | 0.03% | −20,182−0.3% | Reduced |
| Medicxi Ventures Management (Jersey) Ltd | 7,464,572 | $46.8M | 10.69% | 00.0% | Unchanged |
| Frazier Life Sciences Management, L.P. | 10,109,279 | $63.4M | 2.90% | 00.0% | Unchanged |
| Checkpoint Capital L.P. | 0 | $0 | 0.00% | −2,274,157−100.0% | Sold out |
| Decheng Capital LLC | 0 | $0 | 0.00% | −694,254−100.0% | Sold out |
| Siren, L.L.C. | 0 | $0 | 0.00% | −460,753−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −455,837−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −282,553−100.0% | Sold out |
| Oracle Investment Management Inc | 0 | $0 | 0.00% | −145,064−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −133,700−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −77,869−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −55,973−100.0% | Sold out |
| Virtus ETF Advisers LLC | 0 | $0 | 0.00% | −43,789−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −34,049−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −32,029−100.0% | Sold out |
| Aristides Capital LLC | 0 | $0 | 0.00% | −25,200−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −22,845−100.0% | Sold out |
| Capula Management Ltd | 0 | $0 | 0.00% | −16,083−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −15,400−100.0% | Sold out |
| Numerai GP LLC | 0 | $0 | 0.00% | −15,264−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −15,173−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −14,900−100.0% | Sold out |
| Stratos Wealth Advisors, LLC | 0 | $0 | 0.00% | −13,438−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −13,424−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −13,310−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −12,400−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −11,113−100.0% | Sold out |
| Klingman & Associates, LLC | 0 | $0 | 0.00% | −10,517−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −1,951−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −1,061−100.0% | Sold out |
| Greenline Partners, LLC | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| BFSG, LLC | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Riggs Asset Managment Co. Inc. | 0 | $0 | 0.00% | −69−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |