TransAlta Corporation
DE ˙ DB ˙ CA89346D1078
12,48 € ↑0,42 (3,44%)
2026-06-03
DEL PRIS
SecurityDE:TZ1 / TransAlta Corporation
InstitutionMorgan Stanley
Latest Disclosed Ownership5,244,199 shares
Latest Disclosed Value $ 68,699,020
Morgan Stanley reports 49.94% increase in ownership of TZ1 / TransAlta Corporation

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 5,244,199 shares of TransAlta Corporation (DE:TZ1) valued at $57,633,747 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 3,497,528 shares of TransAlta Corporation. This represents a change in shares of 49.94% during the quarter. The current value of the position is $65,447,604 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)
2026-05-15 2026-03-31 13F TRANSALTA COM 89346D107 5,244,199 1,746,671 49.94 68,699 55.40 0.0041
2026-05-27 2025-12-31 13F/A-1 TRANSALTA COM 89346D107 3,497,528 -4,594,201 -56.78 44,209 -60.03 0.0026
2026-02-13 2025-12-31 13F TRANSALTA COM 89346D107 3,497,528 -4,594,201 44,209 0.0026
2026-05-27 2025-09-30 13F/A-1 TRANSALTA COM 89346D107 8,091,729 -757,750 -8.56 110,614 15.84 0.0067
2025-11-14 2025-09-30 13F TRANSALTA COM 89346D107 8,091,729 -757,750 110,614 0.0067
2025-08-15 2025-06-30 13F TRANSALTA COM 89346D107 8,849,479 -3,911,006 -30.65 95,486 -19.97 0.0062
2025-05-15 2025-03-31 13F TRANSALTA COM 89346D107 12,760,485 9,857,911 339.63 119,311 190.50 0.0085
2025-05-15 2024-12-31 13F/A-1 TRANSALTA COM 89346D107 2,902,574 1,920,316 195.50 41,071 303.61 0.0029
2025-02-14 2024-12-31 13F TRANSALTA COM 89346D107 2,902,574 1,920,316 41,071 0.0029
2025-05-14 2024-09-30 13F/A-2 TRANSALTA COM 89346D107 982,258 -115,272 -10.50 10,176 30.97 0.0007
2025-02-14 2024-09-30 13F/A-1 TRANSALTA COM 89346D107 982,258 -115,272 10,176 0.0007
2024-11-14 2024-09-30 13F TRANSALTA COM 89346D107 982,258 -115,272 10,176 0.0001
2025-05-14 2024-06-30 13F/A-2 TRANSALTA COM 89346D107 1,097,530 -1,670,483 -60.35 7,771 -56.34 0.0006
2024-10-17 2024-06-30 13F/A-1 TRANSALTA COM 89346D107 1,097,530 -1,670,483 7,771 0.0006
2024-08-14 2024-06-30 13F TRANSALTA COM 89346D107 1,097,530 -1,670,483 7,771 0.0006
2024-10-17 2024-03-31 13F/A-2 TRANSALTA COM 89346D107 2,768,013 1,595,038 135.98 17,798 82.60 0.0014
2024-08-16 2024-03-31 13F/A-1 TRANSALTA COM 89346D107 2,768,013 1,595,038 17,798 0.0002
2024-05-15 2024-03-31 13F TRANSALTA COM 89346D107 2,768,013 1,595,038 17,798 0.0014
2024-08-16 2023-12-31 13F/A-1 TRANSALTA COM 89346D107 1,172,975 370,938 46.25 9,747 39.70 0.0009
2024-02-13 2023-12-31 13F TRANSALTA COM 89346D107 1,172,975 370,938 9,747 0.0009
2023-11-15 2023-09-30 13F TRANSALTA COM 89346D107 802,037 -126,930 -13.66 6,978 -19.76 0.0007
2023-08-14 2023-06-30 13F TRANSALTA COM 89346D107 928,967 -85,431 -8.42 8,695 -2.03 0.0009
2023-05-15 2023-03-31 13F TRANSALTA COM 89346D107 1,014,398 55,202 5.76 8,876 3.16 0.0010
2023-02-14 2022-12-31 13F TRANSALTA COM 89346D107 959,196 -249,135 -20.62 8,604 -19.36 0.0010
2022-11-14 2022-09-30 13F TRANSALTA COM 89346D107 1,208,331 -272,653 -18.41 10,668 -36.82 0.0015
2022-10-27 2022-06-30 13F/A-1 TRANSALTA COM 89346D107 1,480,984 69,825 4.95 16,884 15.49 0.0022
2022-08-15 2022-06-30 13F TRANSALTA COM 89346D107 1,480,984 69,825 16,884 0.0022
2022-10-27 2022-03-31 13F/A-1 TRANSALTA COM 89346D107 1,411,159 428,850 43.66 14,619 33.84 0.0020
2022-05-13 2022-03-31 13F TRANSALTA COM 89346D107 1,411,159 428,850 14,619 0.0020
2022-02-14 2021-12-31 13F TRANSALTA COM 89346D107 982,309 -18,490 -1.85 10,923 3.35 0.0013
2021-11-15 2021-09-30 13F TRANSALTA COM 89346D107 1,000,799 139,858 16.24 10,569 23.01 0.0014
2021-08-23 2021-06-30 13F/A-1 TRANSALTA COM 89346D107 860,941 436,031 102.62 8,592 113.73 0.0011
2021-08-16 2021-06-30 13F TRANSALTA COM 89346D107 863,188 438,278 8,615 0.0002
2021-05-17 2021-03-31 13F TRANSALTA COM 89346D107 424,910 -789,354 -65.01 4,020 -56.38 0.0006
2021-02-16 2020-12-31 13F TRANSALTA COM 89346D107 1,214,264 208,355 20.71 9,216 48.98 0.0014
2020-11-13 2020-09-30 13F TRANSALTA COM 89346D107 1,005,909 -960,388 -48.84 6,186 -46.95 0.0012
2020-08-14 2020-06-30 13F TRANSALTA COM 89346D107 1,966,297 -622,024 -24.03 11,661 -14.02 0.0026
2020-05-26 2020-03-31 13F/A-1 TRANSALTA COM 89346D107 2,588,321 797,999 44.57 13,563 5.80 0.0037
2020-05-15 2020-03-31 13F TRANSALTA COM 89346D107 2,588,321 797,999 13,563 1,041.9211
2020-02-14 2019-12-31 13F TRANSALTA COM 89346D107 1,790,322 73,475 4.28 12,819 14.87 0.0030
2019-11-14 2019-09-30 13F TRANSALTA COM 89346D107 1,716,847 266,637 18.39 11,160 18.22 0.0030
2019-08-14 2019-06-30 13F TRANSALTA COM 89346D107 1,450,210 100,742 7.47 9,440 -4.69 0.0025
2019-05-15 2019-03-31 13F TRANSALTA COM 89346D107 1,349,468 203,735 17.78 9,905 109.85 0.0028
2019-02-14 2018-12-31 13F TRANSALTA COM 89346D107 1,145,733 -17,932 -1.54 4,720 -27.93 0.0014
2019-04-23 2018-09-30 13F/A-2 TRANSALTA COM 89346D107 1,163,665 215,047 22.67 6,549 38.08 0.0016
2018-11-20 2018-09-30 13F/A-1 TRANSALTA COM 89346D107 1,163,665 0 6,549 0.0016
2018-11-14 2018-09-30 13F TRANSALTA COM 89346D107 1,163,665 215,047 6,549
2019-04-23 2018-06-30 13F/A-1 TRANSALTA COM 89346D107 948,618 -539,975 -36.27 4,743 -41.53 0.0013
2018-08-14 2018-06-30 13F TRANSALTA COM 89346D107 948,618 -539,975 4,743
2019-04-23 2018-03-31 13F/A-1 TRANSALTA COM 89346D107 1,488,593 230,530 18.32 8,112 8.36 0.0023
2018-05-14 2018-03-31 13F TRANSALTA COM 89346D107 1,488,593 230,530 8,112
2019-04-23 2017-12-31 13F/A-1 TRANSALTA COM 89346D107 1,258,063 -760,544 -37.68 7,486 -36.61 0.0020
2018-02-14 2017-12-31 13F TRANSALTA COM 89346D107 1,258,063 -760,544 7,486
2017-11-14 2017-09-30 13F TRANSALTA COM 89346D107 2,018,607 95,986 4.99 11,809 -4.02 0.0035
2017-08-11 2017-06-30 13F TRANSALTA COM 89346D107 1,922,621 -359,163 -15.74 12,304 -7.83 0.0037
2017-05-22 2017-03-31 13F/A-1 TRANSALTA COM 89346D107 2,281,784 -693,295 -23.30 13,349 -18.42 0.0041
2017-05-12 2017-03-31 13F TRANSALTA COM 89346D107 2,281,784 13,349
2017-02-22 2016-12-31 13F/A-1 TRANSALTA COM 89346D107 2,975,079 -340,020 -10.26 16,363 10.92 0.0054
2017-02-13 2016-12-31 13F TRANSALTA COM 89346D107 2,975,079 16,363
2016-11-10 2016-09-30 13F TRANSALTA COM 89346D107 3,315,099 -812,885 -19.69 14,752 -31.54 0.0050
2016-08-12 2016-06-30 13F TRANSALTA COM 89346D107 4,127,984 1,440,014 53.57 21,548 72.40 0.0078
2016-05-12 2016-03-31 13F TRANSALTA COM 89346D107 2,687,970 1,472,784 121.20 12,499 190.61 0.0048
2016-02-09 2015-12-31 13F TRANSALTA COM 89346D107 1,215,186 -292,091 -19.38 4,301 -38.64 0.0016
2016-02-08 2015-09-30 13F/A-1 TRANSALTA COM 89346D107 1,507,277 565,536 60.05 7,009 -3.97 0.0026
2015-11-09 2015-09-30 13F TRANSALTA COM 89346D107 1,507,277 7,009
2015-08-12 2015-06-30 13F TRANSALTA COM 89346D107 941,741 -368,971 -28.15 7,299 -40.12 0.0025
2015-05-14 2015-03-31 13F TRANSALTA COM 89346D107 1,310,712 248,437 23.39 12,190 26.66 0.0045
2015-02-13 2014-12-31 13F TRANSALTA COM 89346D107 1,062,275 -23,799 -2.19 9,624 -15.61 0.0035
2014-12-16 2014-09-30 13F/A-1 TRANSALTA COM 89346D107 1,086,074 -11,170 -1.02 11,404 -10.70 0.0044
2014-11-14 2014-09-30 13F TRANSALTA COM 89346D107 1,086,074 11,404
2014-05-13 2014-03-31 13F TRANSALTA COM 89346D107 1,097,244 161,814 17.30 12,771 7.67 0.0053
2014-02-13 2013-12-31 13F TRANSALTA COM 89346D107 935,430 213,873 29.64 11,861 26.84 0.0050
2013-11-13 2013-09-30 13F TRANSALTA CORP CAD COM NA 89346D107 721,557 175,003 32.02 9,351 24.71 0.0044
2013-08-08 2013-06-30 13F TRANSALTA CORP CAD COM NA 89346D107 546,554 546,554 7,498 0.0038
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.