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 2026
Institutional positions in Phathom Pharmaceuticals, Inc. as of Mar 31, 2026. 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
- 174
- +2 vs. Q4 2025
- Shares held
- 68.9M
- +10.1M (+17.2%) vs. Q4 2025
- Total value
- $765.5M
- −$207.3M (−21.3%) vs. Q4 2025
- New holders
- 37
- 75 more added
- Sold out
- 35
- 40 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Phathom Pharmaceuticals, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Los Angeles Capital Management LLC | 24,676 | $274.1K | 0.00% | −8,749−26.2% | Reduced |
| Summit Financial Wealth Advisors, LLC | 22,143 | $246.0K | 0.03% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 21,732 | $241.4K | 0.00% | +3,272+17.7% | Added |
| Janus Henderson Group PLC | 21,500 | $239.4K | 0.00% | 00.0% | Unchanged |
| Inspirion Wealth Advisors, LLC | 19,914 | $221.2K | 0.03% | +100+0.5% | Added |
| Jain Global LLC | 18,262 | $202.9K | 0.00% | −3,475−16.0% | Reduced |
| Fiduciary Trust Co | 18,067 | $200.7K | 0.00% | +2,027+12.6% | Added |
| Dark Forest Capital Management LP | 17,460 | $194.0K | 0.02% | −44,788−72.0% | Reduced |
| LPL Financial LLC | 17,207 | $191.2K | 0.00% | +17,207 | New |
| Group One Trading, L.P. | 16,939 | $188.2K | 0.01% | −86,745−83.7% | Reduced |
| Profund Advisors LLC | 16,484 | $183.1K | 0.01% | +922+5.9% | Added |
| State of New Jersey Common Pension Fund D | 15,997 | $177.7K | 0.00% | +15,997 | New |
| DRW Securities, LLC | 15,921 | $176.9K | 0.01% | +15,921 | New |
| Schonfeld Strategic Advisors LLC | 15,614 | $173.5K | 0.00% | −15,330−49.5% | Reduced |
| Pathstone Holdings, LLC | 15,000 | $166.7K | 0.00% | +100+0.7% | Added |
| Bridgefront Capital, LLC | 14,954 | $166.1K | 0.04% | −2,027−11.9% | Reduced |
| Lazard Asset Management LLC | 14,671 | $163.0K | 0.00% | +14,671 | New |
| KLP Kapitalforvaltning AS | 14,000 | $155.5K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 13,983 | $155.4K | 0.01% | +2,391+20.6% | Added |
| ExodusPoint Capital Management, LP | 13,293 | $147.7K | 0.00% | −9,108−40.7% | Reduced |
| Manufacturers Life Insurance Company, The | 12,908 | $143.4K | 0.00% | +470+3.8% | Added |
| Arizona State Retirement System | 12,857 | $142.8K | 0.00% | +990+8.3% | Added |
| Dynamic Technology Lab Private Ltd | 12,111 | $134.6K | 0.02% | +12,111 | New |
| Quadrature Capital Ltd | 12,078 | $134.2K | 0.00% | +12,078 | New |
| Police & Firemen's Retirement System of New Jersey | 11,925 | $132.5K | 0.00% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 11,536 | $128.2K | 0.00% | +11,536 | New |
| Primoris Wealth Advisors, LLC | 11,449 | $127.2K | 0.09% | +11,449 | New |
| Intech Investment Management LLC | 11,348 | $126.1K | 0.00% | −7,703−40.4% | Reduced |
| BNP Paribas Arbitrage, SA | 11,332 | $125.9K | 0.00% | +1,542+15.8% | Added |
| Vanguard Investments Australia, Ltd. | 11,276 | $125.3K | 0.00% | +11,276 | New |
| New York State Common Retirement Fund | 10,770 | $119.7K | 0.00% | −30,986−74.2% | Reduced |
| Allworth Financial LP | 10,540 | $117.1K | 0.00% | +90+0.9% | Added |
| ProShare Advisors LLC | 10,246 | $113.8K | 0.00% | −131−1.3% | Reduced |
| Private Advisor Group, LLC | 10,180 | $113.1K | 0.00% | −4,400−30.2% | Reduced |
| FMR LLC | 7,025 | $78.0K | 0.00% | −156−2.2% | Reduced |
| Great West Life Assurance Co | 6,818 | $76.0K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 5,766 | $64.0K | 0.00% | −16,788−74.4% | Reduced |
| State of Wyoming | 4,936 | $54.8K | 0.01% | +4,936 | New |
| Mirae Asset Global Investments Co., Ltd. | 4,110 | $45.7K | 0.00% | +653+18.9% | Added |
| Rockefeller Capital Management L.P. | 4,095 | $45.5K | 0.00% | +3,940+2,541.9% | Added |
| Ameritas Investment Partners, Inc. | 3,527 | $39.2K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 3,526 | $37.3K | 0.00% | +655+22.8% | Added |
| Clear Street Markets LLC | 3,048 | $33.9K | 0.02% | +3,048 | New |
| Huntington National Bank | 2,304 | $25.6K | 0.00% | +318+16.0% | Added |
| Advisor Group Holdings, Inc. | 2,304 | $25.6K | 0.00% | −4,146−64.3% | Reduced |
| Nisa Investment Advisors, LLC | 2,288 | $25.4K | 0.00% | +1,720+302.8% | Added |
| Tower Research Capital LLC (TRC) | 1,941 | $21.6K | 0.00% | +844+76.9% | Added |
| CWM, LLC | 1,864 | $20.7K | 0.00% | −144−7.2% | Reduced |
| Larson Financial Group LLC | 1,767 | $19.6K | 0.00% | +1,120+173.1% | Added |
| GF Fund Management Co. Ltd. | 1,588 | $17.6K | 0.00% | +191+13.7% | Added |
| The PNC Financial Services Group, Inc. | 1,387 | $15.4K | 0.00% | −34−2.4% | Reduced |
| Sterling Capital Management LLC | 1,198 | $13.3K | 0.00% | −551−31.5% | Reduced |
| Quadrant Capital Group LLC | 1,091 | $12.1K | 0.00% | +18+1.7% | Added |
| Strategic Wealth Advisors LLC | 1,000 | $11.0K | 0.01% | 00.0% | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 889 | $9.88K | 0.00% | +285+47.2% | Added |
| C M Bidwell & Associates Ltd | 590 | $6.55K | 0.00% | −263−30.8% | Reduced |
| Massmutual Trust Co FSB | 459 | $5.10K | 0.00% | +139+43.4% | Added |
| GAMMA Investing LLC | 438 | $4.87K | 0.00% | +135+44.6% | Added |
| Farther Finance Advisors, LLC | 349 | $3.89K | 0.00% | +7+2.0% | Added |
| US Bancorp | 295 | $3.28K | 0.00% | +18+6.5% | Added |
| Optiver Holding B.V. | 282 | $3.13K | 0.00% | +84+42.4% | Added |
| Signaturefd, LLC | 239 | $2.65K | 0.00% | +199+497.5% | Added |
| Truvestments Capital LLC | 225 | $2.50K | 0.00% | +225 | New |
| Parallel Advisors, LLC | 100 | $1.11K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 88 | $978 | 0.00% | −7−7.4% | Reduced |
| Rachor Investment Advisory Services, LLC | 25 | $278 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 23 | $256 | 0.00% | +23 | New |
| ZRC Wealth Management, LLC | 20 | $223 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 12 | $134 | 0.00% | +7+140.0% | Added |
| Root Financial Partners, LLC | 11 | $122 | 0.00% | +11 | New |
| Stone House Investment Management, LLC | 8 | $89 | 0.00% | +8 | New |
| IFP Advisors, Inc | 1 | $11 | 0.00% | 00.0% | Unchanged |
| Hughes Financial Services, LLC | 1 | $11 | 0.00% | +1 | New |
| Covestor Ltd | 8 | $0 | 0.00% | −8−50.0% | Reduced |
| Divisadero Street Capital Management, LP | 0 | $0 | 0.00% | −662,312−100.0% | Sold out |
| Moore Capital Management, LP | 0 | $0 | 0.00% | −600,000−100.0% | Sold out |
| Next Century Growth Investors LLC | 0 | $0 | 0.00% | −393,774−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −384,770−100.0% | Sold out |
| Caxton Associates LLP | 0 | $0 | 0.00% | −181,968−100.0% | Sold out |
| Southeast Asset Advisors Inc. | 0 | $0 | 0.00% | −42,874−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −30,488−100.0% | Sold out |
| Occidental Asset Management, LLC | 0 | $0 | 0.00% | −29,919−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −28,250−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −27,010−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −22,185−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −20,487−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −16,497−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −15,540−100.0% | Sold out |
| Baader Bank INC | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −13,855−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −12,879−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −12,867−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −11,473−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −11,000−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −10,540−100.0% | Sold out |
| 9823 Capital, L.P. | 0 | $0 | 0.00% | −10,429−100.0% | Sold out |
| Canada Pension Plan Investment Board | 0 | $0 | 0.00% | −4,600−100.0% | Sold out |
| RiverPark Advisors, LLC | 0 | $0 | 0.00% | −2,807−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −2,275−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −1,599−100.0% | Sold out |