CAMBRIDGE, MA
PARABILIS MEDICINES, INC.PBLS— Latest position per institution from SEC 13F filings
15
Institutional holders
89.83M
Total shares held
2.46B
Estimated value
4.49M
Avg. position size
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
Shares
28.93M
Value
791.91M
Filed
Jun 30, 2026
FMR LLC
CIK 315066
Shares
10.29M
Value
281.71M
Filed
Jun 30, 2026
ARCH VENTURE MANAGEMENT, LLC
CIK 1274403
Shares
6.41M
Value
175.52M
Filed
Jun 30, 2026
VENBIO PARTNERS LLC
CIK 1776382
Shares
5.27M
Value
144.15M
Filed
Jun 30, 2026
ALPHABET INC.
CIK 1652044
Shares
4.92M
Value
134.65M
Filed
Jun 30, 2026
NEXTECH INVEST LTD.
CIK 1595430
Shares
4.66M
Value
127.63M
Filed
Jun 30, 2026
CORMORANT ASSET MANAGEMENT, LP
CIK 1583977
Shares
4.62M
Value
126.33M
Filed
Jun 30, 2026
REGENERON PHARMACEUTICALS, INC.
CIK 872589
Shares
4.17M
Value
114.04M
Filed
Jun 30, 2026
SIREN, L.L.C.
CIK 2005245
Shares
2.99M
Value
81.90M
Filed
Jun 30, 2026
FARALLON CAPITAL MANAGEMENT, L.L.C.
CIK 909661
Shares
2.37M
Value
64.82M
Filed
Jun 30, 2026
JUPITER TOPCO LLC
CIK 2146052
Shares
2.30M
Value
62.71M
Filed
Jun 30, 2026
FRAZIER LIFE SCIENCES MANAGEMENT, L.P.
CIK 1892134
Shares
1.92M
Value
52.57M
Filed
Jun 30, 2026
DEERFIELD MANAGEMENT COMPANY, L.P.
CIK 1009258
Shares
1.88M
Value
51.47M
Filed
Jun 30, 2026
GENERAL CATALYST GROUP MANAGEMENT, LLC
CIK 1637946
Shares
1.60M
Value
43.82M
Filed
Jun 30, 2026
GENERAL ATLANTIC, L.P.
CIK 1017645
Shares
1.54M
Value
42.11M
Filed
Jun 30, 2026
SOLEUS CAPITAL MANAGEMENT, L.P.
CIK 1802630
Shares
1.47M
Value
40.10M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
1.30M
Value
35.65M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.16M
Value
31.67M
Filed
Jun 30, 2026
JPMORGAN CHASE & CO
CIK 19617
Shares
1.04M
Value
30.44M
Filed
Jun 30, 2026
FORESITE CAPITAL MANAGEMENT VI LLC
CIK 2013341
Shares
999.04K
Value
27.34M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | 1346824 | 28.93M | 791.91M | Jun 30, 2026 |
| 2 | FMR LLC | 315066 | 10.29M | 281.71M | Jun 30, 2026 |
| 3 | ARCH VENTURE MANAGEMENT, LLC | 1274403 | 6.41M | 175.52M | Jun 30, 2026 |
| 4 | VENBIO PARTNERS LLC | 1776382 | 5.27M | 144.15M | Jun 30, 2026 |
| 5 | ALPHABET INC. | 1652044 | 4.92M | 134.65M | Jun 30, 2026 |
| 6 | NEXTECH INVEST LTD. | 1595430 | 4.66M | 127.63M | Jun 30, 2026 |
| 7 | CORMORANT ASSET MANAGEMENT, LP | 1583977 | 4.62M | 126.33M | Jun 30, 2026 |
| 8 | REGENERON PHARMACEUTICALS, INC. | 872589 | 4.17M | 114.04M | Jun 30, 2026 |
| 9 | SIREN, L.L.C. | 2005245 | 2.99M | 81.90M | Jun 30, 2026 |
| 10 | FARALLON CAPITAL MANAGEMENT, L.L.C. | 909661 | 2.37M | 64.82M | Jun 30, 2026 |
| 11 | JUPITER TOPCO LLC | 2146052 | 2.30M | 62.71M | Jun 30, 2026 |
| 12 | FRAZIER LIFE SCIENCES MANAGEMENT, L.P. | 1892134 | 1.92M | 52.57M | Jun 30, 2026 |
| 13 | DEERFIELD MANAGEMENT COMPANY, L.P. | 1009258 | 1.88M | 51.47M | Jun 30, 2026 |
| 14 | GENERAL CATALYST GROUP MANAGEMENT, LLC | 1637946 | 1.60M | 43.82M | Jun 30, 2026 |
| 15 | GENERAL ATLANTIC, L.P. | 1017645 | 1.54M | 42.11M | Jun 30, 2026 |
| 16 | SOLEUS CAPITAL MANAGEMENT, L.P. | 1802630 | 1.47M | 40.10M | Jun 30, 2026 |
| 17 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 1.30M | 35.65M | Jun 30, 2026 |
| 18 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.16M | 31.67M | Jun 30, 2026 |
| 19 | JPMORGAN CHASE & CO | 19617 | 1.04M | 30.44M | Jun 30, 2026 |
| 20 | FORESITE CAPITAL MANAGEMENT VI LLC | 2013341 | 999.04K | 27.34M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.