TransAlta Corporation
DE ˙ DB ˙ CA89346D1078
12,48 € ↑0,42 (3,44%)
2026-06-03
DEL PRIS
SecurityDE:TZ1 / TransAlta Corporation
InstitutionMackenzie Financial Corp
Latest Disclosed Ownership4,684,204 shares
Latest Disclosed Value $ 61,578,445
Mackenzie Financial Corp reports 29.63% increase in ownership of TZ1 / TransAlta Corporation

On May 13, 2026 - Mackenzie Financial Corp filed a 13F-HR form disclosing ownership of 4,684,204 shares of TransAlta Corporation (DE:TZ1) valued at $51,479,402 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 3,613,617 shares of TransAlta Corporation. This represents a change in shares of 29.63% during the quarter. The current value of the position is $58,458,866 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)
2026-05-13 2026-03-31 13F TRANSALTA COM 89346D107 4,684,204 1,070,587 29.63 61,578 34.87 0.0739
2026-02-18 2025-12-31 13F TRANSALTA COM 89346D107 3,613,617 -848,711 -19.02 45,657 -25.08 0.0541
2025-11-13 2025-09-30 13F TRANSALTA COM 89346D107 4,462,328 -542,393 -10.84 60,940 12.81 0.0738
2025-08-13 2025-06-30 13F TRANSALTA COM 89346D107 5,004,721 -44,379 -0.88 54,023 14.65 0.0700
2025-05-07 2025-03-31 13F TRANSALTA COM 89346D107 5,049,100 33,676 0.67 47,119 -33.50 0.0670
2025-05-02 2024-12-31 13F/A-2 TRANSALTA COM 89346D107 5,015,424 -1,010,977 -16.78 70,857 13.43 0.0966
2025-02-20 2024-12-31 13F/A-1 TRANSALTA COM 89346D107 5,015,424 -1,010,977 70,857 0.0921
2025-02-14 2024-12-31 13F TransAlta Common Stock 89346D107 5,015,424 -1,010,977 71,305 0.1024
2024-11-13 2024-09-30 13F TRANSALTA COM 89346D107 6,026,401 -60,448 -0.99 62,470 44.73 0.0869
2024-08-14 2024-06-30 13F TRANSALTA COM 89346D107 6,086,849 -207,924 -3.30 43,163 6.84 0.0641
2024-05-10 2024-03-31 13F TRANSALTA COM 89346D107 6,294,773 -75,643 -1.19 40,400 -23.78 0.0582
2024-01-30 2023-12-31 13F TRANSALTA COM 89346D107 6,370,416 149,378 2.40 53,007 5.15 0.0799
2023-10-25 2023-09-30 13F TRANSALTA COM 89346D107 6,221,038 -29,222 -0.47 50,409 -13.83 0.0847
2023-08-03 2023-06-30 13F TRANSALTA COM 89346D107 6,250,260 -627,187 -9.12 58,497 -2.74 0.0887
2023-04-24 2023-03-31 13F TRANSALTA COM 89346D107 6,877,447 1,466,215 27.10 60,145 24.48 0.0929
2023-02-14 2022-12-31 13F TRANSALTA COM 89346D107 5,411,232 971,592 21.88 48,319 23.26 0.0807
2022-10-07 2022-09-30 13F TransAlta Common Stock 89346D107 4,439,640 170,219 3.99 39,199 -19.55 0.0674
2022-08-10 2022-06-30 13F TRANSALTA COM 89346D107 4,269,421 -481,488 -10.13 48,724 -1.07 0.0780
2022-05-13 2022-03-31 13F TRANSALTA COM 89346D107 4,750,909 1,551,346 48.49 49,252 38.59 0.0660
2022-02-14 2021-12-31 13F TRANSALTA COM 89346D107 3,199,563 -197,730 -5.82 35,539 -0.81 0.0479
2021-11-08 2021-09-30 13F TRANSALTA COM 89346D107 3,397,293 571,634 20.23 35,829 27.39 0.0508
2021-08-11 2021-06-30 13F TRANSALTA COM 89346D107 2,825,659 149,806 5.60 28,125 11.05 0.0391
2021-05-14 2021-03-31 13F TRANSALTA COM 89346D107 2,675,853 1,773,041 196.39 25,326 270.37 0.0386
2021-02-10 2020-12-31 13F TRANSALTA COM 89346D107 902,812 -178,641 -16.52 6,838 2.77 0.0148
2020-11-13 2020-09-30 13F TRANSALTA COM 89346D107 1,081,453 -107,523 -9.04 6,654 -5.34 0.0165
2020-08-13 2020-06-30 13F TRANSALTA COM 89346D107 1,188,976 -113,280 -8.70 7,029 4.04 0.0188
2020-05-14 2020-03-31 13F TRANSALTA COM 89346D107 1,302,256 -163,950 -11.18 6,756 -35.56 0.0217
2020-02-13 2019-12-31 13F TRANSALTA COM 89346D107 1,466,206 -109,199 -6.93 10,484 2.38 0.0258
2019-11-14 2019-09-30 13F TRANSALTA COM 89346D107 1,575,405 -1,196,411 -43.16 10,240 -43.25 0.0269
2019-08-23 2019-06-30 13F/A-1 TRANSALTA COM 89346D107 2,771,816 -1,942,621 -41.21 18,045 -47.85 0.0466
2019-08-14 2019-06-30 13F TRANSALTA COM 89346D107 2,771,816 -1,942,621 18,045
2019-05-15 2019-03-31 13F TRANSALTA COM 89346D107 4,714,437 -1,111,575 -19.08 34,604 44.17 0.0835
2019-02-06 2018-12-31 13F TRANSALTA COM 89346D107 5,826,012 272,115 4.90 24,003 -23.21 0.0631
2018-11-15 2018-09-30 13F TRANSALTA COM 89346D107 5,553,897 -11,481 -0.21 31,260 12.34 0.0761
2018-08-13 2018-06-30 13F TRANSALTA COM 89346D107 5,565,378 -812,920 -12.75 27,827 -19.95 0.0710
2018-05-14 2018-03-31 13F/A-1 TRANSALTA COM 89346D107 6,378,298 652,238 11.39 34,762 2.03 0.0886
2018-05-14 2018-03-31 13F TRANSALTA COM 89346D107 6,378,298 34,762
2018-02-13 2017-12-31 13F TRANSALTA COM 89346D107 5,726,060 85,827 1.52 34,070 3.26 0.0822
2017-11-13 2017-09-30 13F TRANSALTA COM 89346D107 5,640,233 219,752 4.05 32,995 -4.89 0.1779
2017-08-14 2017-06-30 13F TRANSALTA COM 89346D107 5,420,481 939,657 20.97 34,691 32.34 0.1931
2017-05-25 2017-03-31 13F/A-1 TRANSALTA COM 89346D107 4,480,824 -121,928 -2.65 26,213 3.10 0.1533
2017-05-12 2017-03-31 13F TRANSALTA COM 89346D107 4,480,824 26,213
2017-02-14 2016-12-31 13F TRANSALTA COM 89346D107 4,602,752 -23,600 -0.51 25,426 23.51 0.1523
2016-11-15 2016-09-30 13F TRANSALTA COM 89346D107 4,626,352 -173,300 -3.61 20,587 -17.83 0.1285
2016-08-12 2016-06-30 13F TRANSALTA COM 89346D107 4,799,652 -615,801 -11.37 25,054 30.29 0.1415
2016-02-12 2015-12-31 13F TRANSALTA COM 89346D107 5,415,453 2,607,990 92.89 19,229 46.89 0.1193
2015-11-13 2015-09-30 13F TRANSALTA COM 89346D107 2,807,463 1,764,891 169.28 13,091 61.24 0.0794
2015-08-13 2015-06-30 13F TRANSALTA COM 89346D107 1,042,572 -233,522 -18.30 8,119 -31.41 0.0440
2015-05-13 2015-03-31 13F TRANSALTA COM 89346D107 1,276,094 4,038 0.32 11,837 2.92 0.0624
2015-02-11 2014-12-31 13F TRANSALTA COM 89346D107 1,272,056 27,848 2.24 11,501 -11.75 0.0587
2014-11-12 2014-09-30 13F TRANSALTA COM 89346D107 1,244,208 17,814 1.45 13,033 -13.33 0.0653
2014-08-11 2014-06-30 13F TRANSALTA COM 89346D107 1,226,394 -225,993 -15.56 15,037 -10.90 0.0699
2014-05-14 2014-03-31 13F TRANSALTA COM 89346D107 1,452,387 -109,523 -7.01 16,876 -14.79 0.0827
2014-02-11 2013-12-31 13F/A-1 TRANSALTA COM 89346D107 1,561,910 -37,035 -2.32 19,806 -4.69 0.1001
2014-02-03 2013-12-31 13F TRANSALTA COM 89346D107 1,561,910 19,806
2013-11-12 2013-09-30 13F TRANSALTA COM 89346D107 1,598,945 15,165 0.96 20,781 -4.29 0.1052
2013-08-20 2013-06-30 13F/A-1 TRANSALTA COM 89346D107 1,583,780 1,583,780 21,713 0.1035
2013-08-09 2013-06-30 13F TRANSALTA COM 89346D107 1,583,780 21,713 0.1039
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.