TransAlta Corporation
CA ˙ TSX ˙ CA89346D1078
17,69 CAD ↓ -0,31 (-1,72%)
2026-06-05
CENA AKCJI
SecurityCA:TA / TransAlta Corporation
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership1,428,195 shares
Latest Disclosed Value $ 18,709,355
Renaissance Technologies Llc reports 17.94% increase in ownership of TA / TransAlta Corporation

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 1,428,195 shares of TransAlta Corporation (CA:TA) valued at $26,121,687 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,210,995 shares of TransAlta Corporation. This represents a change in shares of 17.94% during the quarter. The current value of the position is $25,264,770 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)
2026-05-14 2026-03-31 13F TRANSALTA COM 89346D107 1,428,195 217,200 17.94 18,709 22.23 0.0293
2026-02-12 2025-12-31 13F TRANSALTA COM 89346D107 1,210,995 180,995 17.57 15,307 8.71 0.0237
2025-11-13 2025-09-30 13F TRANSALTA COM 89346D107 1,030,000 -357,400 -25.76 14,080 -5.95 0.0186
2025-08-13 2025-06-30 13F TRANSALTA COM 89346D107 1,387,400 -609,100 -30.51 14,970 -19.81 0.0199
2025-05-14 2025-03-31 13F TRANSALTA COM 89346D107 1,996,500 303,200 17.91 18,667 -22.09 0.0283
2025-02-13 2024-12-31 13F TRANSALTA COM 89346D107 1,693,300 -37,100 -2.14 23,960 33.66 0.0355
2024-11-13 2024-09-30 13F TRANSALTA COM 89346D107 1,730,400 -40,111 -2.27 17,927 43.01 0.0270
2024-08-09 2024-06-30 13F TRANSALTA COM 89346D107 1,770,511 -574,989 -24.51 12,535 83,466.67 0.0213
2024-05-13 2024-03-31 13F TRANSALTA COM 89346D107 2,345,500 335,159 16.67 15 -6.25 0.0237
2024-02-13 2023-12-31 13F TRANSALTA COM 89346D107 2,010,341 -372,600 -15.64 17 -20.00 0.0259
2023-11-14 2023-09-30 13F TRANSALTA COM 89346D107 2,382,941 334,470 16.33 21 5.26 0.0354
2023-08-11 2023-06-30 13F TRANSALTA COM 89346D107 2,048,471 149,430 7.87 19 18.75 0.0276
2023-05-12 2023-03-31 13F TRANSALTA COM 89346D107 1,899,041 -296,500 -13.50 17 -15.79 0.0221
2023-02-13 2022-12-31 13F TRANSALTA COM 89346D107 2,195,541 -188,800 -7.92 20 -99.91 0.0269
2022-11-14 2022-09-30 13F TRANSALTA COM 89346D107 2,384,341 35,841 1.53 21,056 -21.35 0.0298
2022-08-12 2022-06-30 13F TRANSALTA COM 89346D107 2,348,500 -321,841 -12.05 26,773 -3.23 0.0317
2022-05-13 2022-03-31 13F TRANSALTA COM 89346D107 2,670,341 399,141 17.57 27,667 9.55 0.0325
2022-02-11 2021-12-31 13F TRANSALTA COM 89346D107 2,271,200 -20,749 -0.91 25,256 4.35 0.0314
2021-11-12 2021-09-30 13F TRANSALTA COM 89346D107 2,291,949 -1,087,592 -32.18 24,203 -28.17 0.0313
2021-08-13 2021-06-30 13F TRANSALTA COM 89346D107 3,379,541 1,052,500 45.23 33,696 53.07 0.0421
2021-05-13 2021-03-31 13F TRANSALTA COM 89346D107 2,327,041 -1,320,400 -36.20 22,014 -20.43 0.0274
2021-02-10 2020-12-31 13F TRANSALTA COM 89346D107 3,647,441 508,500 16.20 27,665 43.30 0.0300
2020-11-13 2020-09-30 13F TRANSALTA COM 89346D107 3,138,941 180,800 6.11 19,305 10.06 0.0193
2020-08-13 2020-06-30 13F TRANSALTA COM 89346D107 2,958,141 -544,100 -15.54 17,540 -4.34 0.0151
2020-05-14 2020-03-31 13F TRANSALTA COM 89346D107 3,502,241 573,962 19.60 18,336 -12.51 0.0178
2020-02-13 2019-12-31 13F TRANSALTA COM 89346D107 2,928,279 1,067,638 57.38 20,957 73.23 0.0161
2019-11-13 2019-09-30 13F TRANSALTA COM 89346D107 1,860,641 5,200 0.28 12,098 0.14 0.0102
2019-08-12 2019-06-30 13F TRANSALTA COM 89346D107 1,855,441 967,541 108.97 12,081 85.38 0.0106
2019-05-14 2019-03-31 13F TRANSALTA COM 89346D107 887,900 242,500 37.57 6,517 145.09 0.0059
2019-02-12 2018-12-31 13F TRANSALTA COM 89346D107 645,400 -264,741 -29.09 2,659 -48.09 0.0029
2018-11-13 2018-09-30 13F TRANSALTA COM 89346D107 910,141 260,800 40.16 5,122 57.65 0.0053
2018-08-13 2018-06-30 13F/A-1 TRANSALTA COM 89346D107 649,341 117,841 22.17 3,249 12.15 0.0035
2018-08-13 2018-06-30 13F TRANSALTA COM 89346D107 531,500 2,897
2018-05-14 2018-03-31 13F TRANSALTA COM 89346D107 531,500 30,300 6.05 2,897 -2.85 0.0032
2018-02-13 2017-12-31 13F TRANSALTA COM 89346D107 501,200 24,800 5.21 2,982 7.00 0.0033
2017-11-13 2017-09-30 13F TRANSALTA COM 89346D107 476,400 42,400 9.77 2,787 0.32 0.0033
2017-08-11 2017-06-30 13F TRANSALTA COM 89346D107 434,000 27,400 6.74 2,778 16.77 0.0035
2017-05-12 2017-03-31 13F TRANSALTA COM 89346D107 406,600 -192,141 -32.09 2,379 -27.87 0.0033
2017-02-13 2016-12-31 13F TRANSALTA COM 89346D107 598,741 162,400 37.22 3,298 69.91 0.0052
2016-11-14 2016-09-30 13F TRANSALTA COM 89346D107 436,341 127,741 41.39 1,941 20.48 0.0034
2016-08-12 2016-06-30 13F TRANSALTA COM 89346D107 308,600 10,900 3.66 1,611 16.40 0.0031
2016-05-13 2016-03-31 13F TRANSALTA COM 89346D107 297,700 -16,260 -5.18 1,384 24.57 0.0026
2016-02-11 2015-12-31 13F TRANSALTA COM 89346D107 313,960 89,260 39.72 1,111 6.32 0.0024
2015-11-12 2015-09-30 13F TRANSALTA COM 89346D107 224,700 122,800 120.51 1,045 32.28 0.0025
2015-08-14 2015-06-30 13F TRANSALTA COM 89346D107 101,900 -195,841 -65.78 790 -71.44 0.0018
2015-05-13 2015-03-31 13F TRANSALTA COM 89346D107 297,741 -195,198 -39.60 2,766 -38.05 0.0059
2015-02-13 2014-12-31 13F TRANSALTA COM 89346D107 492,939 -13,402 -2.65 4,465 -15.95 0.0108
2014-11-12 2014-09-30 13F TRANSALTA COM 89346D107 506,341 460,641 1,007.97 5,312 846.88 0.0145
2014-08-13 2014-06-30 13F TRANSALTA COM 89346D107 45,700 45,700 561 0.0013
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.