CM
TLN

Castleark Management’s Talen Energy Corp TLN Stock Holding History

Castleark Management’s Portfolio TLN Stock Details TLN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$231K Sell
600
-1,320
-69% -$484K 0.01% 291
2026
Q1 		$613K Sell
1,920
-6,150
-76% -$2.17M 0.02% 247
2025
Q4 		$3.02M Buy
8,070
+660
+9% +$257K 0.09% 178
2025
Q3 		$3.15M Hold
7,410
– – 0.09% 177
2025
Q2 		$2.15M Sell
7,410
-1,510
-17% -$358K 0.06% 182
2025
Q1 		$1.78M Buy
8,920
+3,430
+62% +$744K 0.06% 192
2024
Q4 		$1.11M Buy
+5,490
New +$1.07M 0.04% 211

Other funds holding TLN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
MP
MFN Partners Boston, Massachusetts $4.83B AUM 65.74% 1-Year Est. Return
EC
ECP ControlCo Summit, New Jersey $4.67B AUM 13.65% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
FAM
Fred Alger Management New York $30B AUM 76.99% 1-Year Est. Return
WHRC
W.H. Reaves & Co Jersey City, New Jersey $6.59B AUM 31.9% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
SHCM
Sachem Head Capital Management New York $4.82B AUM 73.38% 1-Year Est. Return

Castleark Management's TLN Position: Q2 2026 in Review

Castleark Management reduced its Talen Energy Corp (TLN) stake by 69% in Q2 2026, selling an estimated $484K and leaving 600 shares worth $231K. The position accounts for 0.01% of the portfolio, ranked #291.

Castleark Management first reported a position in TLN in Q4 2024 and has held it in 7 quarters since. The position peaked at $3.15M in Q3 2025. 646 funds tracked by Wall St. Rank hold TLN as of Q2 2026.

  • Castleark Management held 600 shares of Talen Energy Corp worth $231K as of Q2 2026.
  • Castleark Management sold 1,320 Talen Energy Corp shares in Q2 2026, an estimated $484K.
  • Talen Energy Corp made up 0.01% of Castleark Management's portfolio in Q2 2026, its #291 holding.
  • Castleark Management first reported a position in Talen Energy Corp in Q4 2024 and has held it in 7 quarters since.
  • Castleark Management's Talen Energy Corp position peaked at $3.15M in Q3 2025.
  • 646 funds tracked by Wall St. Rank held Talen Energy Corp as of Q2 2026.

Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.