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 		$21.4M Sell
1,632,890
-394,518
-19% -$5.08M ﹤0.01% 2254
2025
Q4 		$25.6M Buy
2,027,408
+1,056,088
+109% +$15.8M ﹤0.01% 2078
2025
Q3 		$13.3M Sell
971,320
-319,991
-25% -$3.94M ﹤0.01% 2861
2025
Q2 		$13.9M Buy
1,291,311
+1,284,093
+17,790% +$12.2M ﹤0.01% 2606
2025
Q1 		$67.5K Sell
7,218
-191,570
-96% -$2.12M ﹤0.01% 11967
2024
Q4 		$2.81M Sell
198,788
-416,313
-68% -$4.75M ﹤0.01% 4946
2024
Q3 		$6.37M Buy
615,101
+79,385
+15% +$660K ﹤0.01% 3560
2024
Q2 		$3.79M Buy
535,716
+140,305
+35% +$961K ﹤0.01% 4184
2024
Q1 		$2.54M Buy
395,411
+251,094
+174% +$1.78M ﹤0.01% 5063
2023
Q4 		$1.2M Sell
144,317
-60,848
-30% -$492K ﹤0.01% 6328
2023
Q3 		$1.78M Sell
205,165
-161,088
-44% -$1.56M ﹤0.01% 5429
2023
Q2 		$3.43M Sell
366,253
-322,585
-47% -$3.03M ﹤0.01% 4237
2023
Q1 		$6.03M Buy
688,838
+106,460
+18% +$938K ﹤0.01% 3502
2022
Q4 		$5.22M Buy
582,378
+560,940
+2,617% +$5.02M ﹤0.01% 3780
2022
Q3 		$189K Buy
21,438
+1,567
+8% +$16.1K ﹤0.01% 10458
2022
Q2 		$227K Sell
19,871
-100,887
-84% -$1.11M ﹤0.01% 10436
2022
Q1 		$1.25M Sell
120,758
-159,197
-57% -$1.64M ﹤0.01% 7194
2021
Q4 		$3.11M Buy
279,955
+74,988
+37% +$817K ﹤0.01% 5264
2021
Q3 		$2.16M Buy
204,967
+113,627
+124% +$1.14M ﹤0.01% 6145
2021
Q2 		$912K Buy
91,340
+54,036
+145% +$522K ﹤0.01% 8598
2021
Q1 		$353K Sell
37,304
-187,412
-83% -$1.66M ﹤0.01% 10469
2020
Q4 		$1.71M Sell
224,716
-164,041
-42% -$1.1M ﹤0.01% 5697
2020
Q3 		$2.39M Sell
388,757
-179,094
-32% -$1.12M ﹤0.01% 4397
2020
Q2 		$3.37M Sell
567,851
-13,902
-2% -$79.9K ﹤0.01% 3663
2020
Q1 		$3.05M Buy
581,753
+284,305
+96% +$1.93M ﹤0.01% 3442
2019
Q4 		$2.13M Buy
297,448
+68,818
+30% +$447K ﹤0.01% 4318
2019
Q3 		$1.49M Sell
228,630
-14,310
-6% -$90.7K ﹤0.01% 4946
2019
Q2 		$1.58M Buy
242,940
+161,616
+199% +$1.09M ﹤0.01% 4923
2019
Q1 		$596K Sell
81,324
-116,673
-59% -$666K ﹤0.01% 6495
2018
Q4 		$812K Buy
197,997
+187,349
+1,759% +$981K ﹤0.01% 5612
2018
Q3 		$60K Sell
10,648
-30,748
-74% -$172K ﹤0.01% 8766
2018
Q2 		$207K Buy
41,396
+24,359
+143% +$127K ﹤0.01% 7832
2018
Q1 		$93K Buy
17,037
+4,622
+37% +$25.5K ﹤0.01% 7739
2017
Q4 		$74K Sell
12,415
-6,685
-35% -$39.8K ﹤0.01% 7520
2017
Q3 		$112K Buy
+19,100
New +$119K ﹤0.01% 6999
2016
Q3 		– Sell
-24,200
Closed -$125K – 7761
2016
Q2 		$125K Buy
24,200
+9,658
+66% +$48.9K ﹤0.01% 6099
2016
Q1 		$68K Buy
+14,542
New +$56.3K ﹤0.01% 6169
2015
Q4 		– Sell
-29,341
Closed -$136K – 9187
2015
Q3 		$136K Buy
+29,341
New +$167K ﹤0.01% 6626
2015
Q2 		– Sell
-36,489
Closed -$339K – 9089
2015
Q1 		$339K Buy
36,489
+13,782
+61% +$125K ﹤0.01% 5477
2014
Q4 		$205K Buy
+22,707
New +$218K ﹤0.01% 5956
2014
Q3 		– Sell
-24,277
Closed -$298K – 8393
2014
Q2 		$298K Buy
+24,277
New +$290K ﹤0.01% 5079

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 $269B AUM 31.4% 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.