NEW YORK, NY
SELLAS LIFE SCIENCES GROUP, INC.SLS— Latest position per institution from SEC 13F filings
15
Institutional holders
93.93M
Total shares held
1.17B
Estimated value
4.70M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
15.07M
Value
222.44M
Filed
Jun 30, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
13.40M
Value
197.74M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
13M
Value
191.83M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
8.47M
Value
31.92M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
8.23M
Value
121.42M
Filed
Jun 30, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
6.61M
Value
97.49M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
4.88M
Value
72.11M
Filed
Jun 30, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
CIK 1081019
Shares
2.99M
Value
202.37K
Filed
Jun 30, 2026
ANSON FUNDS MANAGEMENT LP
CIK 1491072
Shares
2.65M
Value
39.05M
Filed
Jun 30, 2026
JONES FINANCIAL COMPANIES LLLP
CIK 815917
Shares
2.30M
Value
28.55M
Filed
Jun 30, 2026
CALIGAN PARTNERS LP
CIK 1727492
Shares
2.30M
Value
3.70M
Filed
Sep 30, 2025
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
2.16M
Value
31.90M
Filed
Jun 30, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
2.04M
Value
8.62M
Filed
Mar 31, 2026
NORTHERN TRUST CORP
CIK 73124
Shares
1.62M
Value
23.91M
Filed
Jun 30, 2026
PERCEPTIVE ADVISORS LLC
CIK 1224962
Shares
1.50M
Value
22.14M
Filed
Jun 30, 2026
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
1.48M
Value
1.76M
Filed
Jun 30, 2024
JANE STREET GROUP, LLC
CIK 1595888
Shares
1.42M
Value
20.97M
Filed
Jun 30, 2026
VANGUARD FIDUCIARY TRUST CO
CIK 933478
Shares
1.34M
Value
19.71M
Filed
Jun 30, 2026
UBS GROUP AG
CIK 1610520
Shares
1.25M
Value
18.49M
Filed
Jun 30, 2026
MORGAN STANLEY
CIK 895421
Shares
1.24M
Value
18.25M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 15.07M | 222.44M | Jun 30, 2026 |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 13.40M | 197.74M | Jun 30, 2026 |
| 3 | STATE STREET CORP | 93751 | 13M | 191.83M | Jun 30, 2026 |
| 4 | VANGUARD GROUP INC | 102909 | 8.47M | 31.92M | Dec 31, 2025 |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 8.23M | 121.42M | Jun 30, 2026 |
| 6 | CITADEL ADVISORS LLC | 1423053 | 6.61M | 97.49M | Jun 30, 2026 |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 4.88M | 72.11M | Jun 30, 2026 |
| 8 | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1081019 | 2.99M | 202.37K | Jun 30, 2026 |
| 9 | ANSON FUNDS MANAGEMENT LP | 1491072 | 2.65M | 39.05M | Jun 30, 2026 |
| 10 | JONES FINANCIAL COMPANIES LLLP | 815917 | 2.30M | 28.55M | Jun 30, 2026 |
| 11 | CALIGAN PARTNERS LP | 1727492 | 2.30M | 3.70M | Sep 30, 2025 |
| 12 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 2.16M | 31.90M | Jun 30, 2026 |
| 13 | MARSHALL WACE, LLP | 1318757 | 2.04M | 8.62M | Mar 31, 2026 |
| 14 | NORTHERN TRUST CORP | 73124 | 1.62M | 23.91M | Jun 30, 2026 |
| 15 | PERCEPTIVE ADVISORS LLC | 1224962 | 1.50M | 22.14M | Jun 30, 2026 |
| 16 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 1.48M | 1.76M | Jun 30, 2024 |
| 17 | JANE STREET GROUP, LLC | 1595888 | 1.42M | 20.97M | Jun 30, 2026 |
| 18 | VANGUARD FIDUCIARY TRUST CO | 933478 | 1.34M | 19.71M | Jun 30, 2026 |
| 19 | UBS GROUP AG | 1610520 | 1.25M | 18.49M | Jun 30, 2026 |
| 20 | MORGAN STANLEY | 895421 | 1.24M | 18.25M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.