PHAT Phathom Pharmaceuticals, Inc.
Phathom Pharmaceuticals, Inc. (PHAT) Institutional Ownership
What the institutions did with PHAT last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| Frazier Life Sciences Management, L.P. | 12.5M | 17.3% |
| Medicxi Ventures Management (Jersey) Ltd | 7.5M | 10.4% |
| BlackRock, Inc. | 4.5M | 6.3% |
| Invesco Ltd. | 4.0M | 5.6% |
| Carlyle Group Inc. | 3.5M | 4.9% |
| MILLENNIUM MANAGEMENT LLC | 3.4M | 4.7% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.7M | 3.7% |
| GW&K Investment Management, LLC | 2.2M | 3.0% |
| FRANKLIN RESOURCES INC | 2.0M | 2.7% |
| NEA Management Company, LLC | 2.0M | 2.7% |
| 683 Capital Management, LLC | 1.9M | 2.6% |
| GOLDMAN SACHS GROUP INC | 1.8M | 2.5% |
| STATE STREET CORP | 1.6M | 2.2% |
| Catalys Pacific, LLC | 1.5M | 2.1% |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.5M | 2.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.3M | 1.8% |
| WASATCH ADVISORS LP | 1.3M | 1.8% |
| Ensign Peak Advisors, Inc | 1.1M | 1.5% |
| Propel Bio Management, LLC | 1.1M | 1.5% |
| Point72 Asset Management, L.P. | 1.0M | 1.4% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 796.6K | 1.1% |
| SummitTX Capital, L.P. | 789.6K | 1.1% |
| HSBC HOLDINGS PLC | 709.7K | 1.0% |
| MARSHALL WACE, LLP | 666.1K | 0.9% |
| EcoR1 Capital, LLC | 625.0K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| GOLDMAN SACHS GROUP INC | Increased | 626.2K | 1.8M | +1.2M |
| Point72 Asset Management, L.P. | New | 0 | 1.0M | +1.0M |
| FRANKLIN RESOURCES INC | Increased | 994.5K | 2.0M | +976.3K |
| GW&K Investment Management, LLC | Increased | 1.4M | 2.2M | +745.7K |
| HSBC HOLDINGS PLC | New | 0 | 709.7K | +709.7K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 4.0M | 3.4M | -647.1K |
| Ensign Peak Advisors, Inc | Reduced | 1.6M | 1.1M | -575.9K |
| BlackRock, Inc. | Increased | 4.1M | 4.5M | +463.1K |
| PERCEPTIVE ADVISORS LLC | Reduced | 925.0K | 532.0K | -393.0K |
| Avidity Partners Management LP | Reduced | 498.8K | 200.0K | -298.8K |
| Invesco Ltd. | Reduced | 4.3M | 4.0M | -292.3K |
| Susquehanna Portfolio Strategies, LLC | Sold Out | 268.0K | 0 | -268.0K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Increased | 1.2M | 1.5M | +257.4K |
| Catalio Capital Management, LP | Sold Out | 247.8K | 0 | -247.8K |
| Squarepoint Ops LLC | Reduced | 275.2K | 31.6K | -243.6K |
| JANE STREET GROUP, LLC | New | 0 | 212.7K | +212.7K |
| Propel Bio Management, LLC | Increased | 841.3K | 1.1M | +209.1K |
| SummitTX Capital, L.P. | Reduced | 995.9K | 789.6K | -206.3K |
| STATE STREET CORP | Increased | 1.4M | 1.6M | +199.4K |
| CITADEL ADVISORS LLC | Reduced | 383.1K | 184.9K | -198.2K |
| MARSHALL WACE, LLP | Reduced | 860.7K | 666.1K | -194.6K |
| Opaleye Management Inc. | New | 0 | 185.6K | +185.6K |
| Hennion & Walsh Asset Management, Inc. | Increased | 145.9K | 327.3K | +181.3K |
| Jump Financial, LLC | Increased | 26.4K | 191.9K | +165.4K |
| Jones Hill Capital LP | New | 0 | 161.5K | +161.5K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.