Ken Griffin
TAC icon

Ken Griffin’s TransAlta TAC Stock Holding History

Ken Griffin’s Portfolio TAC Stock Details TAC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$515K Sell
39,300
-243,200
-86% -$3.13M ﹤0.01% 9234
2025
Q4 		$3.57M Buy
282,500
+265,000
+1,514% +$3.96M ﹤0.01% 4847
2025
Q3 		$239K Sell
17,500
-49,600
-74% -$610K ﹤0.01% 10860
2025
Q2 		$724K Sell
67,100
-500
-0.7% -$4.76K ﹤0.01% 7771
2025
Q1 		$632K Buy
67,600
+51,400
+317% +$569K ﹤0.01% 7960
2024
Q4 		$229K Sell
16,200
-10,100
-38% -$115K ﹤0.01% 10201
2024
Q3 		$272K Sell
26,300
-2,000
-7% -$16.6K ﹤0.01% 9528
2024
Q2 		$200K Buy
28,300
+6,900
+32% +$47.3K ﹤0.01% 9940
2024
Q1 		$138K Buy
21,400
+20,300
+1,845% +$144K ﹤0.01% 10898
2023
Q4 		$9.14K Sell
1,100
-13,100
-92% -$106K ﹤0.01% 13169
2023
Q3 		$124K Sell
14,200
-11,600
-45% -$113K ﹤0.01% 10624
2023
Q2 		$241K Sell
25,800
-20,500
-44% -$192K ﹤0.01% 9483
2023
Q1 		$405K Buy
46,300
+44,600
+2,624% +$393K ﹤0.01% 8744
2022
Q4 		$15.2K Sell
1,700
-137,000
-99% -$1.23M ﹤0.01% 13339
2022
Q3 		$1.23M Buy
138,700
+74,600
+116% +$767K ﹤0.01% 6546
2022
Q2 		$731K Buy
64,100
+51,000
+389% +$562K ﹤0.01% 7755
2022
Q1 		$136K Buy
+13,100
New +$135K ﹤0.01% 11961
2021
Q4 		– Sell
-17,500
Closed -$185K – 14738
2021
Q3 		$185K Sell
17,500
-5,700
-25% -$57.1K ﹤0.01% 12098
2021
Q2 		$232K Buy
+23,200
New +$224K ﹤0.01% 11842

Other funds holding TAC

BC
Brookfield Corp Toronto, Ontario, Canada $74.2B AUM 0.68% 1-Year Est. Return
Royal Bank of Canada
Royal Bank of Canada Toronto, Ontario, Canada $570B AUM 27.57% 1-Year Est. Return
Bank of Montreal
Bank of Montreal Toronto, Ontario, Canada $304B AUM 35.64% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
OCM
Oaktree Capital Management Los Angeles, California $6.56B AUM 42.97% 1-Year Est. Return

Ken Griffin's TAC Position: Q1 2026 in Review

Ken Griffin reduced its TransAlta (TAC) stake by 19% in Q1 2026, selling an estimated $5.08M and leaving 1,632,890 shares worth $21.4M. The position accounts for ﹤0.01% of the portfolio, ranked #2254.

Ken Griffin first reported a position in TAC in Q2 2014 and has held it in 41 quarters since. The position peaked at $25.6M in Q4 2025. 178 funds tracked by Wall St. Rank hold TAC as of Q1 2026.

  • Ken Griffin held 1,632,890 shares of TransAlta worth $21.4M as of Q1 2026.
  • Ken Griffin sold 394,518 TransAlta shares in Q1 2026, an estimated $5.08M.
  • TransAlta made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #2254 holding.
  • Ken Griffin first reported a position in TransAlta in Q2 2014 and has held it in 41 quarters since.
  • Ken Griffin's TransAlta position peaked at $25.6M in Q4 2025.
  • 178 funds tracked by Wall St. Rank held TransAlta as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.