PBLS Parabilis Medicines, Inc.
Parabilis Medicines, Inc. (PBLS) Institutional Ownership
What the institutions did with PBLS 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 |
|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 28.9M | 29.2% |
| FMR LLC | 10.3M | 10.4% |
| ARCH Venture Management, LLC | 6.4M | 6.5% |
| venBio Partners LLC | 5.3M | 5.3% |
| Alphabet Inc. | 4.9M | 5.0% |
| Nextech Invest, Ltd. | 4.7M | 4.7% |
| Cormorant Asset Management, LP | 4.6M | 4.7% |
| REGENERON PHARMACEUTICALS, INC. | 4.2M | 4.2% |
| Siren, L.L.C. | 3.0M | 3.0% |
| FARALLON CAPITAL MANAGEMENT LLC | 2.4M | 2.4% |
| Jupiter Topco LLC | 2.3M | 2.3% |
| Frazier Life Sciences Management, L.P. | 1.9M | 1.9% |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 1.9M | 1.9% |
| General Catalyst Group Management, LLC | 1.6M | 1.6% |
| GENERAL ATLANTIC, L.P. | 1.5M | 1.6% |
| Soleus Capital Management, L.P. | 1.5M | 1.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.3M | 1.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | 1.2% |
| JPMORGAN CHASE & CO | 1.0M | 1.1% |
| Foresite Capital Management VI LLC | 999.0K | 1.0% |
| Catalio Capital Management, LP | 824.0K | 0.8% |
| ALLIANCEBERNSTEIN L.P. | 810.3K | 0.8% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 751.9K | 0.8% |
| Casdin Capital, LLC | 645.7K | 0.7% |
| Venrock Adviser, LLC | 625.0K | 0.6% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | New | 0 | 28.9M | +28.9M |
| FMR LLC | New | 0 | 10.3M | +10.3M |
| ARCH Venture Management, LLC | New | 0 | 6.4M | +6.4M |
| venBio Partners LLC | New | 0 | 5.3M | +5.3M |
| Alphabet Inc. | New | 0 | 4.9M | +4.9M |
| Nextech Invest, Ltd. | New | 0 | 4.7M | +4.7M |
| Cormorant Asset Management, LP | New | 0 | 4.6M | +4.6M |
| REGENERON PHARMACEUTICALS, INC. | New | 0 | 4.2M | +4.2M |
| Siren, L.L.C. | New | 0 | 3.0M | +3.0M |
| FARALLON CAPITAL MANAGEMENT LLC | New | 0 | 2.4M | +2.4M |
| Frazier Life Sciences Management, L.P. | New | 0 | 1.9M | +1.9M |
| DEERFIELD MANAGEMENT COMPANY, L.P. | New | 0 | 1.9M | +1.9M |
| General Catalyst Group Management, LLC | New | 0 | 1.6M | +1.6M |
| GENERAL ATLANTIC, L.P. | New | 0 | 1.5M | +1.5M |
| Soleus Capital Management, L.P. | New | 0 | 1.5M | +1.5M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New | 0 | 1.3M | +1.3M |
| VANGUARD CAPITAL MANAGEMENT LLC | New | 0 | 1.2M | +1.2M |
| JPMORGAN CHASE & CO | New | 0 | 1.0M | +1.0M |
| Foresite Capital Management VI LLC | New | 0 | 999.0K | +999.0K |
| Catalio Capital Management, LP | New | 0 | 824.0K | +824.0K |
| ALLIANCEBERNSTEIN L.P. | New | 0 | 810.3K | +810.3K |
| PRICE T ROWE ASSOCIATES INC /MD/ | New | 0 | 751.9K | +751.9K |
| Casdin Capital, LLC | New | 0 | 645.7K | +645.7K |
| Venrock Adviser, LLC | New | 0 | 625.0K | +625.0K |
| Rock Springs Capital Management LP | New | 0 | 578.0K | +578.0K |
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.