HOUSTON, TX
TALEN ENERGY CORPTLN— Latest position per institution from SEC 13F filings
15
Institutional holders
57.94M
Total shares held
14.96B
Estimated value
2.90M
Avg. position size
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM
CIK 1081019
Shares
18.23M
Value
47.45K
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
4.46M
Value
1.67B
Filed
Dec 31, 2025
BLACKROCK, INC.
CIK 2012383
Shares
4.36M
Value
1.67B
Filed
Jun 30, 2026
RUBRIC CAPITAL MANAGEMENT LP
CIK 1687509
Shares
3.60M
Value
1.38B
Filed
Jun 30, 2026
MFN PARTNERS MANAGEMENT, LP
CIK 1732811
Shares
3M
Value
1.15B
Filed
Jun 30, 2026
ECP CONTROLCO, LLC
CIK 1707921
Shares
2.40M
Value
922.22M
Filed
Jun 30, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
2.35M
Value
903.80M
Filed
Jun 30, 2026
JANE STREET GROUP, LLC
CIK 1595888
Shares
2.27M
Value
870.90M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
2.17M
Value
832.68M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.05M
Value
789.07M
Filed
Jun 30, 2026
LONE PINE CAPITAL LLC
CIK 1061165
Shares
1.82M
Value
580.34M
Filed
Mar 31, 2026
FRED ALGER MANAGEMENT, LLC
CIK 3520
Shares
1.55M
Value
594.25M
Filed
Jun 30, 2026
REAVES W H & CO INC
CIK 740913
Shares
1.48M
Value
567.42M
Filed
Jun 30, 2026
MONARCH ALTERNATIVE CAPITAL LP
CIK 1281084
Shares
1.45M
Value
292.13M
Filed
Dec 31, 2024
STATE STREET CORP
CIK 93751
Shares
1.38M
Value
530.24M
Filed
Jun 30, 2026
SACHEM HEAD CAPITAL MANAGEMENT LP
CIK 1582090
Shares
1.37M
Value
526.44M
Filed
Jun 30, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
1.18M
Value
452.78M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
953.57K
Value
366.53M
Filed
Jun 30, 2026
MIRABELLA FINANCIAL SERVICES LLP
CIK 1538853
Shares
943.16K
Value
453.40M
Filed
Sep 30, 2024
CASTLE HOOK PARTNERS LP
CIK 1687241
Shares
935.38K
Value
397.89M
Filed
Sep 30, 2025
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 1081019 | 18.23M | 47.45K | Jun 30, 2026 |
| 2 | VANGUARD GROUP INC | 102909 | 4.46M | 1.67B | Dec 31, 2025 |
| 3 | BLACKROCK, INC. | 2012383 | 4.36M | 1.67B | Jun 30, 2026 |
| 4 | RUBRIC CAPITAL MANAGEMENT LP | 1687509 | 3.60M | 1.38B | Jun 30, 2026 |
| 5 | MFN PARTNERS MANAGEMENT, LP | 1732811 | 3M | 1.15B | Jun 30, 2026 |
| 6 | ECP CONTROLCO, LLC | 1707921 | 2.40M | 922.22M | Jun 30, 2026 |
| 7 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 2.35M | 903.80M | Jun 30, 2026 |
| 8 | JANE STREET GROUP, LLC | 1595888 | 2.27M | 870.90M | Jun 30, 2026 |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 2.17M | 832.68M | Jun 30, 2026 |
| 10 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.05M | 789.07M | Jun 30, 2026 |
| 11 | LONE PINE CAPITAL LLC | 1061165 | 1.82M | 580.34M | Mar 31, 2026 |
| 12 | FRED ALGER MANAGEMENT, LLC | 3520 | 1.55M | 594.25M | Jun 30, 2026 |
| 13 | REAVES W H & CO INC | 740913 | 1.48M | 567.42M | Jun 30, 2026 |
| 14 | MONARCH ALTERNATIVE CAPITAL LP | 1281084 | 1.45M | 292.13M | Dec 31, 2024 |
| 15 | STATE STREET CORP | 93751 | 1.38M | 530.24M | Jun 30, 2026 |
| 16 | SACHEM HEAD CAPITAL MANAGEMENT LP | 1582090 | 1.37M | 526.44M | Jun 30, 2026 |
| 17 | CITADEL ADVISORS LLC | 1423053 | 1.18M | 452.78M | Jun 30, 2026 |
| 18 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 953.57K | 366.53M | Jun 30, 2026 |
| 19 | MIRABELLA FINANCIAL SERVICES LLP | 1538853 | 943.16K | 453.40M | Sep 30, 2024 |
| 20 | CASTLE HOOK PARTNERS LP | 1687241 | 935.38K | 397.89M | Sep 30, 2025 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.