TransAlta Corporation
CA ˙ TSX ˙ CA89346D1078
20,08 CA$ ↑0,25 (1,26%)
2026-06-03
DEL PRIS
SecurityCA:TA / TransAlta Corporation
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,629,540 shares
Latest Disclosed Value $ 21,343,152
Dimensional Fund Advisors Lp reports 5.96% increase in ownership of TA / TransAlta Corporation

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 1,629,540 shares of TransAlta Corporation (CA:TA) valued at $29,804,287 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,537,875 shares of TransAlta Corporation. This represents a change in shares of 5.96% during the quarter. The current value of the position is $32,721,163 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F TRANSALTA COM 89346D107 1,629,540 91,665 5.96 21,343 9.80 0.0010
2026-02-12 2025-12-31 13F TRANSALTA COM 89346D107 1,537,875 97,143 6.74 19,439 -1.30 0.0041
2025-11-12 2025-09-30 13F TRANSALTA COM 89346D107 1,440,732 140,444 10.80 19,695 40.38 0.0042
2025-08-12 2025-06-30 13F TRANSALTA COM 89346D107 1,300,288 120,630 10.23 14,029 27.19 0.0032
2025-05-13 2025-03-31 13F TRANSALTA COM 89346D107 1,179,658 261,772 28.52 11,031 -15.08 0.0027
2025-02-13 2024-12-31 13F TRANSALTA COM 89346D107 917,886 62,269 7.28 12,989 46.53 0.0031
2024-11-07 2024-09-30 13F TRANSALTA COM 89346D107 855,617 175,751 25.85 8,864 84.17 0.0022
2024-08-09 2024-06-30 13F TRANSALTA COM 89346D107 679,866 -76,767 -10.15 4,813 -1.07 0.0013
2024-05-10 2024-03-31 13F TRANSALTA COM 89346D107 756,633 6,413 0.85 4,865 -21.96 0.0013
2024-02-07 2023-12-31 13F TRANSALTA COM 89346D107 750,220 6,738 0.91 6,234 -3.62 0.0018
2023-11-09 2023-09-30 13F TRANSALTA COM 89346D107 743,482 -4,728 -0.63 6,468 -7.64 0.0021
2023-08-09 2023-06-30 13F TRANSALTA COM 89346D107 748,210 -20,555 -2.67 7,003 4.12 0.0022
2023-05-12 2023-03-31 13F TRANSALTA COM 89346D107 768,765 14,350 1.90 6,727 112,000.00 0.0023
2023-02-09 2022-12-31 13F TRANSALTA COM 89346D107 754,415 44,242 6.23 7 -99.90 0.0020
2022-11-10 2022-09-30 13F TRANSALTA COM 89346D107 710,173 36,425 5.41 6,271 -18.36 0.0024
2022-08-12 2022-06-30 13F TRANSALTA COM 89346D107 673,748 31,403 4.89 7,681 15.42 0.0028
2022-05-13 2022-03-31 13F TRANSALTA COM 89346D107 642,345 13,793 2.19 6,655 -4.78 0.0021
2022-02-09 2021-12-31 13F TRANSALTA COM 89346D107 628,552 4,808 0.77 6,989 6.10 0.0021
2021-11-12 2021-09-30 13F TRANSALTA COM 89346D107 623,744 1,848 0.30 6,587 6.12 0.0021
2021-08-12 2021-06-30 13F TRANSALTA COM 89346D107 621,896 2,696 0.44 6,207 5.96 0.0020
2021-05-14 2021-03-31 13F TRANSALTA COM 89346D107 619,200 -31,016 -4.77 5,858 18.70 0.0019
2021-03-08 2020-12-31 13F/A-2 TRANSALTA COM 89346D107 650,216 0 0.00 4,935 23.41 0.0018
2021-02-11 2020-12-31 13F TRANSALTA COM 89346D107 650,216 0 4,935 1,782.2597
2020-11-12 2020-09-30 13F TRANSALTA COM 89346D107 650,216 -8,000 -1.22 3,999 2.46 0.0017
2020-08-13 2020-06-30 13F TRANSALTA COM 89346D107 658,216 16,789 2.62 3,903 16.13 0.0017
2020-05-14 2020-03-31 13F TRANSALTA COM 89346D107 641,427 10,100 1.60 3,361 -25.64 0.0018
2020-02-14 2019-12-31 13F TRANSALTA COM 89346D107 631,327 0 0.00 4,520 10.14 0.0016
2019-11-12 2019-09-30 13F TRANSALTA COM 89346D107 631,327 0 0.00 4,104 -0.15 0.0016
2019-08-13 2019-06-30 13F TRANSALTA COM 89346D107 631,327 0 0.00 4,110 -11.31 0.0016
2019-08-12 2019-03-31 13F/A-2 TRANSALTA COM 89346D107 631,327 -777 -0.12 4,634 77.96 0.0018
2019-05-10 2019-03-31 13F TRANSALTA COM 89346D107 631,327 -777 4,634
2019-02-26 2018-12-31 13F/A-1 TRANSALTA COM 89346D107 632,104 0 0.00 2,604 -26.44 0.0012
2019-02-13 2018-12-31 13F TRANSALTA COM 89346D107 632,104 0 2,604
2018-11-13 2018-09-30 13F TRANSALTA COM 89346D107 632,104 0 0.00 3,540 11.99 0.0013
2018-08-10 2018-06-30 13F TRANSALTA COM 89346D107 632,104 -1,494 -0.24 3,161 -8.46 0.0013
2018-05-11 2018-03-31 13F TRANSALTA COM 89346D107 633,598 0 0.00 3,453 -8.41 0.0014
2018-02-12 2017-12-31 13F TRANSALTA COM 89346D107 633,598 0 0.00 3,770 1.70 0.0016
2017-11-13 2017-09-30 13F TRANSALTA COM 89346D107 633,598 0 0.00 3,707 -8.58 0.0016
2017-08-11 2017-06-30 13F TRANSALTA COM 89346D107 633,598 0 0.00 4,055 9.39 0.0019
2017-05-12 2017-03-31 13F TRANSALTA COM 89346D107 633,598 -3,227 -0.51 3,707 5.82 0.0018
2017-02-09 2016-12-31 13F TRANSALTA COM 89346D107 636,825 0 0.00 3,503 23.61 0.0017
2016-11-10 2016-09-30 13F TRANSALTA COM 89346D107 636,825 0 0.00 2,834 -14.74 0.0015
2016-08-09 2016-06-30 13F TRANSALTA COM 89346D107 636,825 -27,046 -4.07 3,324 7.68 0.0019
2016-05-13 2016-03-31 13F TRANSALTA COM 89346D107 663,871 -89,921 -11.93 3,087 15.70 0.0018
2016-02-10 2015-12-31 13F TRANSALTA COM 89346D107 753,792 -45,853 -5.73 2,668 -28.24 0.0017
2015-11-13 2015-09-30 13F TRANSALTA COM 89346D107 799,645 -30,484 -3.67 3,718 -42.20 0.0024
2015-08-14 2015-06-30 13F TRANSALTA COM 89346D107 830,129 124,865 17.70 6,433 -1.92 0.0039
2015-05-14 2015-03-31 13F TRANSALTA COM 89346D107 705,264 291,071 70.27 6,559 74.77 0.0041
2015-02-06 2014-12-31 13F TRANSALTA COM 89346D107 414,193 198,815 92.31 3,753 65.99 0.0025
2014-11-13 2014-09-30 13F TRANSALTA COM 89346D107 215,378 46,721 27.70 2,261 9.28 0.0016
2014-08-08 2014-06-30 13F TRANSALTA COM 89346D107 168,657 20,799 14.07 2,069 20.22 0.0014
2014-05-14 2014-03-31 13F TRANSALTA COM 89346D107 147,858 48,296 48.51 1,721 36.37 0.0013
2014-02-12 2013-12-31 13F TRANSALTA COM 89346D107 99,562 18,796 23.27 1,262 20.53 0.0010
2013-11-13 2013-09-30 13F TRANSALTA COM 89346D107 80,766 24,570 43.72 1,047 35.80 0.0009
2013-08-15 2013-06-30 13F TRANSALTA COM 89346D107 56,196 56,196 771 0.0007
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.