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 |
|---|---|---|---|---|---|
| Covestor Ltd | 8 | $0 | 0.00% | −8−50.0% | Reduced |
| IFP Advisors, Inc | 1 | $11 | 0.00% | 00.0% | Unchanged |
| Hughes Financial Services, LLC | 1 | $11 | 0.00% | +1 | New |
| Stone House Investment Management, LLC | 8 | $89 | 0.00% | +8 | New |
| Root Financial Partners, LLC | 11 | $122 | 0.00% | +11 | New |
| EverSource Wealth Advisors, LLC | 12 | $134 | 0.00% | +7+140.0% | Added |
| ZRC Wealth Management, LLC | 20 | $223 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 23 | $256 | 0.00% | +23 | New |
| Rachor Investment Advisory Services, LLC | 25 | $278 | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 88 | $978 | 0.00% | −7−7.4% | Reduced |
| Parallel Advisors, LLC | 100 | $1.11K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 225 | $2.50K | 0.00% | +225 | New |
| Signaturefd, LLC | 239 | $2.65K | 0.00% | +199+497.5% | Added |
| Optiver Holding B.V. | 282 | $3.13K | 0.00% | +84+42.4% | Added |
| US Bancorp | 295 | $3.28K | 0.00% | +18+6.5% | Added |
| Farther Finance Advisors, LLC | 349 | $3.89K | 0.00% | +7+2.0% | Added |
| GAMMA Investing LLC | 438 | $4.87K | 0.00% | +135+44.6% | Added |
| Massmutual Trust Co FSB | 459 | $5.10K | 0.00% | +139+43.4% | Added |
| C M Bidwell & Associates Ltd | 590 | $6.55K | 0.00% | −263−30.8% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 889 | $9.88K | 0.00% | +285+47.2% | Added |
| Strategic Wealth Advisors LLC | 1,000 | $11.0K | 0.01% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 1,091 | $12.1K | 0.00% | +18+1.7% | Added |
| Sterling Capital Management LLC | 1,198 | $13.3K | 0.00% | −551−31.5% | Reduced |
| The PNC Financial Services Group, Inc. | 1,387 | $15.4K | 0.00% | −34−2.4% | Reduced |
| GF Fund Management Co. Ltd. | 1,588 | $17.6K | 0.00% | +191+13.7% | Added |
| Larson Financial Group LLC | 1,767 | $19.6K | 0.00% | +1,120+173.1% | Added |
| CWM, LLC | 1,864 | $20.7K | 0.00% | −144−7.2% | Reduced |
| Tower Research Capital LLC (TRC) | 1,941 | $21.6K | 0.00% | +844+76.9% | Added |
| Nisa Investment Advisors, LLC | 2,288 | $25.4K | 0.00% | +1,720+302.8% | Added |
| Advisor Group Holdings, Inc. | 2,304 | $25.6K | 0.00% | −4,146−64.3% | Reduced |
| Huntington National Bank | 2,304 | $25.6K | 0.00% | +318+16.0% | Added |
| Clear Street Markets LLC | 3,048 | $33.9K | 0.02% | +3,048 | New |
| Jones Financial Companies LLLP | 3,526 | $37.3K | 0.00% | +655+22.8% | Added |
| Ameritas Investment Partners, Inc. | 3,527 | $39.2K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 4,095 | $45.5K | 0.00% | +3,940+2,541.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 4,110 | $45.7K | 0.00% | +653+18.9% | Added |
| State of Wyoming | 4,936 | $54.8K | 0.01% | +4,936 | New |
| Royal Bank of Canada | 5,766 | $64.0K | 0.00% | −16,788−74.4% | Reduced |
| Great West Life Assurance Co | 6,818 | $76.0K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 7,025 | $78.0K | 0.00% | −156−2.2% | Reduced |
| Private Advisor Group, LLC | 10,180 | $113.1K | 0.00% | −4,400−30.2% | Reduced |
| ProShare Advisors LLC | 10,246 | $113.8K | 0.00% | −131−1.3% | Reduced |
| Allworth Financial LP | 10,540 | $117.1K | 0.00% | +90+0.9% | Added |
| New York State Common Retirement Fund | 10,770 | $119.7K | 0.00% | −30,986−74.2% | Reduced |
| Vanguard Investments Australia, Ltd. | 11,276 | $125.3K | 0.00% | +11,276 | New |
| BNP Paribas Arbitrage, SA | 11,332 | $125.9K | 0.00% | +1,542+15.8% | Added |
| Intech Investment Management LLC | 11,348 | $126.1K | 0.00% | −7,703−40.4% | Reduced |
| Primoris Wealth Advisors, LLC | 11,449 | $127.2K | 0.09% | +11,449 | New |
| Quantinno Capital Management LP | 11,536 | $128.2K | 0.00% | +11,536 | New |
| Police & Firemen's Retirement System of New Jersey | 11,925 | $132.5K | 0.00% | 00.0% | Unchanged |
| Quadrature Capital Ltd | 12,078 | $134.2K | 0.00% | +12,078 | New |
| Dynamic Technology Lab Private Ltd | 12,111 | $134.6K | 0.02% | +12,111 | New |
| Arizona State Retirement System | 12,857 | $142.8K | 0.00% | +990+8.3% | Added |
| Manufacturers Life Insurance Company, The | 12,908 | $143.4K | 0.00% | +470+3.8% | Added |
| ExodusPoint Capital Management, LP | 13,293 | $147.7K | 0.00% | −9,108−40.7% | Reduced |
| China Universal Asset Management Co., Ltd. | 13,983 | $155.4K | 0.01% | +2,391+20.6% | Added |
| KLP Kapitalforvaltning AS | 14,000 | $155.5K | 0.00% | 00.0% | Unchanged |
| Lazard Asset Management LLC | 14,671 | $163.0K | 0.00% | +14,671 | New |
| Bridgefront Capital, LLC | 14,954 | $166.1K | 0.04% | −2,027−11.9% | Reduced |
| Pathstone Holdings, LLC | 15,000 | $166.7K | 0.00% | +100+0.7% | Added |
| Schonfeld Strategic Advisors LLC | 15,614 | $173.5K | 0.00% | −15,330−49.5% | Reduced |
| DRW Securities, LLC | 15,921 | $176.9K | 0.01% | +15,921 | New |
| State of New Jersey Common Pension Fund D | 15,997 | $177.7K | 0.00% | +15,997 | New |
| Profund Advisors LLC | 16,484 | $183.1K | 0.01% | +922+5.9% | Added |
| Group One Trading, L.P. | 16,939 | $188.2K | 0.01% | −86,745−83.7% | Reduced |
| LPL Financial LLC | 17,207 | $191.2K | 0.00% | +17,207 | New |
| Dark Forest Capital Management LP | 17,460 | $194.0K | 0.02% | −44,788−72.0% | Reduced |
| Fiduciary Trust Co | 18,067 | $200.7K | 0.00% | +2,027+12.6% | Added |
| Jain Global LLC | 18,262 | $202.9K | 0.00% | −3,475−16.0% | Reduced |
| Inspirion Wealth Advisors, LLC | 19,914 | $221.2K | 0.03% | +100+0.5% | Added |
| Janus Henderson Group PLC | 21,500 | $239.4K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 21,732 | $241.4K | 0.00% | +3,272+17.7% | Added |
| Summit Financial Wealth Advisors, LLC | 22,143 | $246.0K | 0.03% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 24,676 | $274.1K | 0.00% | −8,749−26.2% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 24,992 | $277.7K | 0.00% | +5,102+25.7% | Added |
| Barclays PLC | 25,357 | $281.7K | 0.00% | −59,502−70.1% | Reduced |
| MetLife Investment Management | 25,845 | $287.1K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 26,328 | $292.5K | 0.00% | +1,938+7.9% | Added |
| Jump Financial, LLC | 26,445 | $293.8K | 0.00% | +9,037+51.9% | Added |
| Vanguard Global Advisers, LLC | 26,511 | $294.5K | 0.00% | +26,511 | New |
| Persistent Asset Partners Ltd | 26,766 | $297.4K | 0.12% | +13,850+107.2% | Added |
| Kera Capital Partners, Inc. | 26,826 | $298.0K | 0.04% | +2,571+10.6% | Added |
| Vanguard Asset Management, Ltd | 28,506 | $316.7K | 0.00% | +28,506 | New |
| Citigroup Inc | 29,369 | $326.3K | 0.00% | +910+3.2% | Added |
| Man Group plc | 30,352 | $337.2K | 0.00% | +30,352 | New |
| Legal & General Group Plc | 32,037 | $355.9K | 0.00% | −2,212−6.5% | Reduced |
| Commonwealth Equity Services, LLC | 32,230 | $358.1K | 0.00% | +1,290+4.2% | Added |
| Allstate Corp | 32,687 | $363.2K | 0.00% | +32,687 | New |
| Tocqueville Asset Management L.P. | 35,200 | $391.1K | 0.01% | +500+1.4% | Added |
| Deutsche Bank AG | 36,459 | $405.1K | 0.00% | +3,079+9.2% | Added |
| Tudor Investment Corp Et Al | 38,225 | $424.7K | 0.00% | +9,671+33.9% | Added |
| VARCOV Co. | 39,173 | $435.2K | 0.16% | −47,586−54.8% | Reduced |
| Algert Global LLC | 39,420 | $438.0K | 0.01% | +39,420 | New |
| California State Teachers Retirement System | 40,222 | $446.9K | 0.00% | +79+0.2% | Added |
| Aquatic Capital Management LLC | 40,852 | $453.9K | 0.01% | +40,852 | New |
| ADAR1 Capital Management, LLC | 42,900 | $476.6K | 0.03% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 44,004 | $488.9K | 0.00% | +28,719+187.9% | Added |
| Wells Fargo & Company | 46,113 | $512.3K | 0.00% | −21,903−32.2% | Reduced |
| Stonepine Capital Management, LLC | 50,010 | $555.6K | 0.49% | +50,010 | New |
| Price T Rowe Associates Inc | 52,453 | $583.0K | 0.00% | +15,382+41.5% | Added |