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
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 $5.72T AUM 30.48% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return
MP
MFN Partners Boston, Massachusetts $4.77B AUM 72.29% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
LPC
Lone Pine Capital Greenwich, Connecticut $12.5B AUM 54.4% 1-Year Est. Return
SHCM
Sachem Head Capital Management New York $4.15B AUM 48.05% 1-Year Est. Return
WHRC
W.H. Reaves & Co Jersey City, New Jersey $6.03B AUM 40.55% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
FAM
Fred Alger Management New York $22.8B AUM 64.63% 1-Year Est. Return

Castleark Management's TLN Position: Q1 2026 in Review

Castleark Management reduced its Talen Energy Corp (TLN) stake by 76% in Q1 2026, selling an estimated $2.17M and leaving 1,920 shares worth $613K. The position accounts for 0.02% of the portfolio, ranked #247.

Castleark Management first reported a position in TLN in Q4 2024 and has held it in 6 quarters since. The position peaked at $3.15M in Q3 2025. 578 funds tracked by Wall St. Rank hold TLN as of Q1 2026.

  • Castleark Management held 1,920 shares of Talen Energy Corp worth $613K as of Q1 2026.
  • Castleark Management sold 6,150 Talen Energy Corp shares in Q1 2026, an estimated $2.17M.
  • Talen Energy Corp made up 0.02% of Castleark Management's portfolio in Q1 2026, its #247 holding.
  • Castleark Management first reported a position in Talen Energy Corp in Q4 2024 and has held it in 6 quarters since.
  • Castleark Management's Talen Energy Corp position peaked at $3.15M in Q3 2025.
  • 578 funds tracked by Wall St. Rank held Talen Energy Corp as of Q1 2026.

Based on Castleark Management's 13F filing for Q1 2026, filed 15 May 2026.