BERKELEY HEIGHTS, NJ
KALARIS THERAPEUTICS, INC.KLRS— Latest position per institution from SEC 13F filings
15
Institutional holders
19.53M
Total shares held
83.29M
Estimated value
976.75K
Avg. position size
SAMSARA BIOCAPITAL, LLC
CIK 1744967
Shares
12.88M
Value
52.43M
Filed
Jun 30, 2026
RTW INVESTMENTS, LP
CIK 1493215
Shares
1.30M
Value
5.29M
Filed
Jun 30, 2026
PARADIGM BIOCAPITAL ADVISORS LP
CIK 1855655
Shares
700K
Value
4.04M
Filed
Mar 31, 2026
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
572.69K
Value
2.33M
Filed
Jun 30, 2026
SIREN, L.L.C.
CIK 2005245
Shares
435.80K
Value
1.77M
Filed
Jun 30, 2026
TANG CAPITAL MANAGEMENT LLC
CIK 1232621
Shares
418.24K
Value
2.42M
Filed
Sep 30, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
398.71K
Value
1.62M
Filed
Jun 30, 2026
IKARIAN CAPITAL, LLC
CIK 1778253
Shares
360K
Value
1.47M
Filed
Jun 30, 2026
OCTAGON CAPITAL ADVISORS LP
CIK 1839435
Shares
360K
Value
961.20K
Filed
Jun 30, 2025
GILEAD SCIENCES, INC.
CIK 882095
Shares
317.79K
Value
848.50K
Filed
Jun 30, 2025
PROPEL BIO MANAGEMENT, LLC
CIK 1969764
Shares
295.77K
Value
1.72M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
292.79K
Value
2.47M
Filed
Dec 31, 2025
UBS GROUP AG
CIK 1610520
Shares
262.13K
Value
1.07M
Filed
Jun 30, 2026
ECOR1 CAPITAL, LLC
CIK 1587114
Shares
201.72K
Value
1.62M
Filed
Mar 31, 2025
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
149.35K
Value
607.86K
Filed
Jun 30, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
139.20K
Value
566.55K
Filed
Jun 30, 2026
KALEHUA CAPITAL MANAGEMENT LLC
CIK 2106181
Shares
135.59K
Value
782.33K
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
114.04K
Value
464.29K
Filed
Jun 30, 2026
WOODLINE PARTNERS LP
CIK 1784547
Shares
100K
Value
407K
Filed
Jun 30, 2026
ADAR1 CAPITAL MANAGEMENT, LLC
CIK 1940272
Shares
100K
Value
407K
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | SAMSARA BIOCAPITAL, LLC | 1744967 | 12.88M | 52.43M | Jun 30, 2026 |
| 2 | RTW INVESTMENTS, LP | 1493215 | 1.30M | 5.29M | Jun 30, 2026 |
| 3 | PARADIGM BIOCAPITAL ADVISORS LP | 1855655 | 700K | 4.04M | Mar 31, 2026 |
| 4 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 572.69K | 2.33M | Jun 30, 2026 |
| 5 | SIREN, L.L.C. | 2005245 | 435.80K | 1.77M | Jun 30, 2026 |
| 6 | TANG CAPITAL MANAGEMENT LLC | 1232621 | 418.24K | 2.42M | Sep 30, 2025 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 398.71K | 1.62M | Jun 30, 2026 |
| 8 | IKARIAN CAPITAL, LLC | 1778253 | 360K | 1.47M | Jun 30, 2026 |
| 9 | OCTAGON CAPITAL ADVISORS LP | 1839435 | 360K | 961.20K | Jun 30, 2025 |
| 10 | GILEAD SCIENCES, INC. | 882095 | 317.79K | 848.50K | Jun 30, 2025 |
| 11 | PROPEL BIO MANAGEMENT, LLC | 1969764 | 295.77K | 1.72M | Mar 31, 2026 |
| 12 | VANGUARD GROUP INC | 102909 | 292.79K | 2.47M | Dec 31, 2025 |
| 13 | UBS GROUP AG | 1610520 | 262.13K | 1.07M | Jun 30, 2026 |
| 14 | ECOR1 CAPITAL, LLC | 1587114 | 201.72K | 1.62M | Mar 31, 2025 |
| 15 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 149.35K | 607.86K | Jun 30, 2026 |
| 16 | MARSHALL WACE, LLP | 1318757 | 139.20K | 566.55K | Jun 30, 2026 |
| 17 | KALEHUA CAPITAL MANAGEMENT LLC | 2106181 | 135.59K | 782.33K | Mar 31, 2026 |
| 18 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 114.04K | 464.29K | Jun 30, 2026 |
| 19 | WOODLINE PARTNERS LP | 1784547 | 100K | 407K | Jun 30, 2026 |
| 20 | ADAR1 CAPITAL MANAGEMENT, LLC | 1940272 | 100K | 407K | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.