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 2026
Institutional positions in Phathom Pharmaceuticals, Inc. as of Jun 30, 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
- 161
- −11 vs. Q1 2026
- Shares held
- 72.1M
- +2.96M (+4.3%) vs. Q1 2026
- Total value
- $782.1M
- +$14.1M (+1.8%) vs. Q1 2026
- New holders
- 21
- 59 more added
- Sold out
- 32
- 50 more reduced
2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | $768.3M |
| Q4 2025 | 173 | $1.03B |
| Q3 2025 | 133 | $735.2M |
| Q2 2025 | 117 | $552.0M |
| Q1 2025 | 137 | $401.5M |
| Q4 2024 | 144 | $541.2M |
| Q3 2024 | 133 | $1.32B |
| Q2 2024 | 114 | $599.9M |
| Q1 2024 | 114 | $594.8M |
| Q4 2023 | 117 | $505.8M |
| Q3 2023 | 110 | $452.7M |
| Q2 2023 | 103 | $612.6M |
| Q1 2023 | 84 | $219.7M |
| Q4 2022 | 87 | $316.6M |
| Q3 2022 | 94 | $334.5M |
| Q2 2022 | 94 | $236.7M |
| 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 2026
Shares, value and share of portfolio for each institution holding Phathom Pharmaceuticals, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 12,466,489 | $135.3M | 2.95% | 00.0% | Unchanged |
| Medicxi Ventures Management (Jersey) Ltd | 7,464,572 | $81.0M | 45.65% | 00.0% | Unchanged |
| BlackRock, Inc. | 4,525,129 | $49.1M | 0.00% | +463,133+11.4% | Added |
| Invesco Ltd. | 4,029,731 | $43.7M | 0.00% | −292,329−6.8% | Reduced |
| Carlyle Group Inc. | 3,496,808 | $37.9M | 0.38% | 00.0% | Unchanged |
| Millennium Management LLC | 3,375,834 | $36.6M | 0.02% | −647,075−16.1% | Reduced |
| Vanguard Capital Management LLC | 2,656,944 | $28.8M | 0.00% | +73,308+2.8% | Added |
| GW&K Investment Management, LLC | 2,166,838 | $23.5M | 0.18% | +745,729+52.5% | Added |
| Franklin Resources Inc | 1,970,828 | $21.4M | 0.00% | +976,324+98.2% | Added |
| NEA Management Company, LLC | 1,960,169 | $21.3M | 1.34% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 1,850,000 | $20.1M | 1.85% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 1,778,032 | $19.3M | 0.00% | +1,151,836+183.9% | Added |
| State Street Corp | 1,586,323 | $17.2M | 0.00% | +199,433+14.4% | Added |
| Catalys Pacific, LLC | 1,493,854 | $16.2M | 7.06% | 00.0% | Unchanged |
| Nomura Asset Management International Inc. | 1,462,738 | $15.9M | 0.02% | +257,369+21.4% | Added |
| Geode Capital Management, LLC | 1,315,687 | $14.3M | 0.00% | −12,358−0.9% | Reduced |
| Wasatch Advisors Inc | 1,307,247 | $14.2M | 0.09% | −33,669−2.5% | Reduced |
| Ensign Peak Advisors, Inc | 1,051,913 | $11.4M | 0.02% | −575,893−35.4% | Reduced |
| Propel Bio Management, LLC | 1,050,358 | $11.4M | 5.96% | +209,086+24.9% | Added |
| Point72 Asset Management, L.P. | 1,022,193 | $11.1M | 0.02% | +1,022,193 | New |
| Vanguard Portfolio Management LLC | 796,631 | $8.64M | 0.00% | +130,602+19.6% | Added |
| SummitTX Capital, L.P. | 789,550 | $8.57M | 0.23% | −206,335−20.7% | Reduced |
| HSBC Holdings PLC | 709,695 | $7.70M | 0.00% | +709,695 | New |
| Marshall Wace, LLP | 666,090 | $7.23M | 0.01% | −194,602−22.6% | Reduced |
| EcoR1 Capital, LLC | 625,000 | $6.78M | 0.34% | 00.0% | Unchanged |
| Perceptive Advisors LLC | 532,000 | $5.77M | 0.09% | −393,000−42.5% | Reduced |
| Two Sigma Investments, LP | 519,076 | $5.63M | 0.00% | +36,940+7.7% | Added |
| Northern Trust Corp | 458,301 | $4.97M | 0.00% | +43,345+10.4% | Added |
| StepStone Group LP | 422,085 | $4.58M | 0.21% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 419,094 | $4.55M | 0.00% | +10,079+2.5% | Added |
| Woodline Partners LP | 369,052 | $4.00M | 0.01% | 00.0% | Unchanged |
| Vanguard Fiduciary Trust Co | 354,573 | $3.85M | 0.00% | +15,860+4.7% | Added |
| Hennion & Walsh Asset Management, Inc. | 327,278 | $3.55M | 0.10% | +181,346+124.3% | Added |
| Ameriprise Financial Inc | 293,979 | $3.19M | 0.00% | +39,760+15.6% | Added |
| JPMorgan Chase & Co | 275,251 | $2.99M | 0.00% | −12,179−4.2% | Reduced |
| Simplify Asset Management Inc. | 249,267 | $2.70M | 0.04% | −13,119−5.0% | Reduced |
| Renaissance Technologies LLC | 226,400 | $2.46M | 0.00% | −79,400−26.0% | Reduced |
| Jane Street Group, LLC | 212,706 | $2.31M | 0.00% | +212,706 | New |
| UBS Group AG | 204,573 | $2.22M | 0.00% | −155,798−43.2% | Reduced |
| GWM Advisors LLC | 203,962 | $2.21M | 0.01% | +20,962+11.5% | Added |
| Avidity Partners Management LP | 200,000 | $2.17M | 0.35% | −298,780−59.9% | Reduced |
| Morgan Stanley | 199,909 | $2.17M | 0.00% | +123,228+160.7% | Added |
| Jump Financial, LLC | 191,866 | $2.08M | 0.02% | +165,421+625.5% | Added |
| Opaleye Management Inc. | 185,589 | $2.01M | 0.18% | +185,589 | New |
| Citadel Advisors LLC | 184,901 | $2.01M | 0.00% | −198,157−51.7% | Reduced |
| Trexquant Investment LP | 173,884 | $1.89M | 0.01% | −119,421−40.7% | Reduced |
| Jones Hill Capital LP | 161,486 | $1.75M | 0.37% | +161,486 | New |
| Bank of New York Mellon Corp | 152,313 | $1.65M | 0.00% | +28,295+22.8% | Added |
| Wells Fargo & Company | 152,002 | $1.65M | 0.00% | +105,889+229.6% | Added |
| Bank of America Corp | 151,015 | $1.64M | 0.00% | −57,100−27.4% | Reduced |
| XTX Topco Ltd | 135,832 | $1.47M | 0.02% | −24,669−15.4% | Reduced |
| AQR Capital Management LLC | 134,901 | $1.46M | 0.00% | +79,433+143.2% | Added |
| Wellington Management Group LLP | 132,284 | $1.44M | 0.00% | +20,532+18.4% | Added |
| Diadema Partners LP | 129,950 | $1.41M | 0.50% | +75,300+137.8% | Added |
| Nuveen, LLC | 127,127 | $1.38M | 0.00% | +9,826+8.4% | Added |
| Engineers Gate Manager LP | 118,257 | $1.28M | 0.02% | +44,409+60.1% | Added |
| Virtus Investment Advisers, Inc. | 112,139 | $1.22M | 0.28% | +54,153+93.4% | Added |
| Russell Investments Group, Ltd. | 102,754 | $1.11M | 0.00% | +17,071+19.9% | Added |
| Schroder Investment Management Group | 101,745 | $1.11M | 0.00% | +101,745 | New |
| Stratos Wealth Partners, LTD. | 100,000 | $1.08M | 0.01% | 00.0% | Unchanged |
| Swiss National Bank | 98,800 | $1.07M | 0.00% | +6,200+6.7% | Added |
| D. E. Shaw & Co., Inc. | 95,660 | $1.04M | 0.00% | −36,797−27.8% | Reduced |
| Gilder Gagnon Howe & Co LLC | 88,134 | $956.3K | 0.01% | −51,755−37.0% | Reduced |
| Stonepine Capital Management, LLC | 85,010 | $922.4K | 0.70% | +35,000+70.0% | Added |
| Arrowstreet Capital, Limited Partnership | 77,316 | $838.9K | 0.00% | +77,316 | New |
| KBC Group NV | 77,139 | $837.0K | 0.00% | 00.0% | Unchanged |
| Campbell & CO Investment Adviser LLC | 68,759 | $746.0K | 0.04% | +6,736+10.9% | Added |
| Price T Rowe Associates Inc | 65,722 | $714.0K | 0.00% | +13,269+25.3% | Added |
| Penn Mutual Asset Management, LLC | 62,802 | $681.4K | 3.50% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 62,283 | $675.8K | 0.00% | +18,279+41.5% | Added |
| Rhumbline Advisers | 60,346 | $654.7K | 0.00% | +4,907+8.9% | Added |
| UBS Asset Management Americas Inc | 55,788 | $605.3K | 0.00% | 00.0% | Unchanged |
| Birchview Capital, LP | 55,000 | $596.8K | 0.28% | −140,000−71.8% | Reduced |
| Citigroup Inc | 52,945 | $574.5K | 0.00% | +23,576+80.3% | Added |
| Stifel Financial Corp | 52,832 | $573.2K | 0.00% | −1,207−2.2% | Reduced |
| Creative Planning | 52,750 | $572.3K | 0.00% | −17,443−24.9% | Reduced |
| California State Teachers Retirement System | 51,787 | $561.9K | 0.00% | +11,565+28.8% | Added |
| Alliancebernstein L.P. | 49,290 | $547.6K | 0.00% | −100−0.2% | Reduced |
| Deutsche Bank AG | 50,205 | $544.7K | 0.00% | +13,746+37.7% | Added |
| Pale Fire Capital SE | 49,713 | $539.4K | 0.04% | +49,713 | New |
| Man Group plc | 48,679 | $528.2K | 0.00% | +18,327+60.4% | Added |
| Raymond James Financial Inc | 48,024 | $521.1K | 0.00% | +21,696+82.4% | Added |
| Persistent Asset Partners Ltd | 47,663 | $517.1K | 0.16% | +20,897+78.1% | Added |
| ADAR1 Capital Management, LLC | 42,900 | $465.5K | 0.02% | 00.0% | Unchanged |
| Quantbot Technologies LP | 42,755 | $463.9K | 0.02% | +42,755 | New |
| Barclays PLC | 41,777 | $453.3K | 0.00% | +16,420+64.8% | Added |
| Nomura Holdings Inc | 40,000 | $434.0K | 0.00% | +40,000 | New |
| Y-Intercept (Hong Kong) Ltd | 39,845 | $432.3K | 0.01% | +39,845 | New |
| Fiduciary Trust Co | 35,731 | $387.7K | 0.00% | +17,664+97.8% | Added |
| Allstate Corp | 32,875 | $356.7K | 0.00% | +188+0.6% | Added |
| Legal & General Group Plc | 32,738 | $355.2K | 0.00% | +701+2.2% | Added |
| Squarepoint Ops LLC | 31,595 | $342.8K | 0.00% | −243,566−88.5% | Reduced |
| Gsa Capital Partners LLP | 30,138 | $327.0K | 0.02% | −66,930−69.0% | Reduced |
| Vanguard Asset Management, Ltd | 28,506 | $309.3K | 0.00% | 00.0% | Unchanged |
| MetLife Investment Management | 28,107 | $305.0K | 0.00% | +2,262+8.8% | Added |
| Kera Capital Partners, Inc. | 26,826 | $291.1K | 0.03% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 25,838 | $280.3K | 0.00% | +846+3.4% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 22,647 | $245.7K | 0.00% | +915+4.2% | Added |
| Commonwealth Equity Services, LLC | 22,535 | $244.5K | 0.00% | −9,695−30.1% | Reduced |
| Summit Financial Wealth Advisors, LLC | 22,143 | $240.3K | 0.03% | 00.0% | Unchanged |