NEW YORK, NY
SELLAS LIFE SCIENCES GROUP, INC.SLS— Latest position per institution from SEC 13F filings
15
Institutional holders
78M
Total shares held
291.87M
Estimated value
3.90M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
12.20M
Value
51.60M
Filed
Mar 31, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
8.98M
Value
37.99M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
8.47M
Value
31.92M
Filed
Dec 31, 2025
STATE STREET CORP
CIK 93751
Shares
8.40M
Value
35.52M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
7.53M
Value
31.83M
Filed
Mar 31, 2026
ANSON FUNDS MANAGEMENT LP
CIK 1491072
Shares
6.03M
Value
9.71M
Filed
Sep 30, 2025
CITADEL ADVISORS LLC
CIK 1423053
Shares
4.88M
Value
20.65M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
3.91M
Value
16.55M
Filed
Mar 31, 2026
CALIGAN PARTNERS LP
CIK 1727492
Shares
2.30M
Value
3.70M
Filed
Sep 30, 2025
MARSHALL WACE, LLP
CIK 1318757
Shares
2.04M
Value
8.62M
Filed
Mar 31, 2026
HIGHBRIDGE CAPITAL MANAGEMENT LLC
CIK 919185
Shares
1.81M
Value
2.58K
Filed
Mar 31, 2023
JONES FINANCIAL COMPANIES LLLP
CIK 815917
Shares
1.68M
Value
7.31M
Filed
Mar 31, 2026
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
1.48M
Value
1.76M
Filed
Jun 30, 2024
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
1.46M
Value
6.19M
Filed
Mar 31, 2026
MORGAN STANLEY
CIK 895421
Shares
1.34M
Value
5.65M
Filed
Mar 31, 2026
NORTHERN TRUST CORP
CIK 73124
Shares
1.28M
Value
5.40M
Filed
Mar 31, 2026
VANGUARD FIDUCIARY TRUST CO
CIK 933478
Shares
1.20M
Value
5.09M
Filed
Mar 31, 2026
DAGCO, INC.
CIK 1767343
Shares
1.03M
Value
4.35M
Filed
Mar 31, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
1M
Value
4.24M
Filed
Mar 31, 2026
CLEAR STREET GROUP INC.
CIK 1881567
Shares
1M
Value
3.77M
Filed
Dec 31, 2025
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 12.20M | 51.60M | Mar 31, 2026 |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 8.98M | 37.99M | Mar 31, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 8.47M | 31.92M | Dec 31, 2025 |
| 4 | STATE STREET CORP | 93751 | 8.40M | 35.52M | Mar 31, 2026 |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 7.53M | 31.83M | Mar 31, 2026 |
| 6 | ANSON FUNDS MANAGEMENT LP | 1491072 | 6.03M | 9.71M | Sep 30, 2025 |
| 7 | CITADEL ADVISORS LLC | 1423053 | 4.88M | 20.65M | Mar 31, 2026 |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 3.91M | 16.55M | Mar 31, 2026 |
| 9 | CALIGAN PARTNERS LP | 1727492 | 2.30M | 3.70M | Sep 30, 2025 |
| 10 | MARSHALL WACE, LLP | 1318757 | 2.04M | 8.62M | Mar 31, 2026 |
| 11 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | 919185 | 1.81M | 2.58K | Mar 31, 2023 |
| 12 | JONES FINANCIAL COMPANIES LLLP | 815917 | 1.68M | 7.31M | Mar 31, 2026 |
| 13 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 1.48M | 1.76M | Jun 30, 2024 |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 1.46M | 6.19M | Mar 31, 2026 |
| 15 | MORGAN STANLEY | 895421 | 1.34M | 5.65M | Mar 31, 2026 |
| 16 | NORTHERN TRUST CORP | 73124 | 1.28M | 5.40M | Mar 31, 2026 |
| 17 | VANGUARD FIDUCIARY TRUST CO | 933478 | 1.20M | 5.09M | Mar 31, 2026 |
| 18 | DAGCO, INC. | 1767343 | 1.03M | 4.35M | Mar 31, 2026 |
| 19 | MILLENNIUM MANAGEMENT LLC | 1273087 | 1M | 4.24M | Mar 31, 2026 |
| 20 | CLEAR STREET GROUP INC. | 1881567 | 1M | 3.77M | Dec 31, 2025 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.