TRANSALTA CORP TAC
COM · Common Stock · CUSIP 89346D107 · ISIN CA89346D1078
Global electricity generation company
- SectorUtilities
- IndustryElectric Services
- HeadquartersCalgary, Canada
- Founded1909
- Websitetransalta.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($55.7m this quarter). Holder counts are more reliable. Shares outstanding: 297.5m as of 2024-12-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $9.35. Options: 18 managers hold calls ($57.9m notional), 11 hold puts ($4.7m).
Trends to Q1 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 103 |
| Q4 2022 | 111 |
| Q1 2023 | 111 |
| Q2 2023 | 128 |
| Q3 2023 | 124 |
| Q4 2023 | 137 |
| Q1 2024 | 139 |
| Q2 2024 | 142 |
| Q3 2024 | 157 |
| Q4 2024 | 185 |
| Q1 2025 | 163 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 73 | 47 |
| Q3 2023 | 67 | 59 |
| Q4 2023 | 93 | 53 |
| Q1 2024 | 82 | 57 |
| Q2 2024 | 84 | 63 |
| Q3 2024 | 92 | 65 |
| Q4 2024 | 92 | 81 |
| Q1 2025 | 92 | 100 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $1.8m | $1.5m | 0.85 |
| Q3 2024 | $15.1m | $8.1m | 0.54 |
| Q4 2024 | $36.6m | $9.8m | 0.27 |
| Q1 2025 | $57.9m | $4.7m | 0.08 |
Biggest buyers
| MILLENNIUM MANAGEMENT LLC | Added | +11.0m |
| MORGAN STANLEY | Added | +9.9m |
| Brookfield Corp /ON/ | Added | +9.7m |
| OAKTREE CAPITAL MANAGEMENT LP | New | +5.6m |
| GOLDMAN SACHS GROUP INC | Added | +5.3m |
| FMR LLC | Added | +5.2m |
| Rubric Capital Management LP | Added | +4.4m |
| BANK OF MONTREAL /CAN/ | Added | +3.3m |
| BANK OF AMERICA CORP /DE/ | Added | +2.7m |
| Arvin Capital Management LP | New | +2.4m |
Biggest sellers
| MACKENZIE FINANCIAL CORP | Reduced | -10.0m |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | -5.3m |
| Waratah Capital Advisors Ltd. | Reduced | -4.8m |
| Artisan Partners Limited Partnership | Sold out | -4.7m |
| ROYAL BANK OF CANADA | Reduced | -1.7m |
| Point72 Asset Management, L.P. | Sold out | -1.6m |
| Diameter Capital Partners LP | Sold out | -1.2m |
| Federation des caisses Desjardins du Quebec | Reduced | -1.2m |
| Beryl Capital Management LLC | Sold out | -1.1m |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | -1.1m |
Biggest calls
| MAPLELANE CAPITAL, LLC | Added | $21.5m1.6m shares |
| Arvin Capital Management LP | New | $10.8m1.2m shares |
| Brevan Howard Capital Management LP | Added | $7.3m782.8k shares |
| SIG North Trading, ULC | Added | $3.7m391.6k shares |
| GOLDMAN SACHS GROUP INC | Added | $3.3m352.9k shares |
| BANK OF MONTREAL /CAN/ | New | $2.8m300.0k shares |
| PEAK6 LLC | Reduced | $2.4m255.7k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.4m153.7k shares |
| TORONTO DOMINION BANK | Added | $1.1m117.0k shares |
| JANE STREET GROUP, LLC | Added | $994.8k106.4k shares |
Biggest puts
| SIG North Trading, ULC | Added | $1.4m152.8k shares |
| K2 PRINCIPAL FUND, L.P. | Unchanged | $935.0k100.0k shares |
| CITADEL ADVISORS LLC | Added | $632.1k67.6k shares |
| GROUP ONE TRADING LLC | Added | $553.5k59.2k shares |
| JANE STREET GROUP, LLC | New | $348.8k37.3k shares |
| TORONTO DOMINION BANK | Added | $241.8k25.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $211.3k22.6k shares |
| NATIONAL BANK OF CANADA /FI/ | Added | $116.7k125 shares |
| SIMPLEX TRADING, LLC | Added | $113.0k12.1k shares |
| Jefferies Financial Group Inc. | Reduced | $102.8k11.0k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
BROOKFIELD Corp /ON/
13D · may seek influence
filed 2025-01-08
Stated purposeItem 4 of the original Schedule 13D is hereby supplemented as follows: The Purchaser Reporting Persons disposed of an aggregate 8,600,000 Common Shares in a block trade pursuant to Regulation S under the U.S. Securities Act of 1933, as amended, for aggregate cash proceeds of approximately C$168,990,000 (excluding brokerage commission), at a price of C$19.65 per Common Share. The disposition of the Common Shares reported in this Amendment No. 6 more closely aligns the Reporting Persons' aggregate share ownership with certain thresholds under the Investment Agreement. Although the Reporting Persons have no current specific plan or proposal for further dispositions of the Common Shares, the Reporting Persons also may, at any time and from time to time, subject to compliance at all relevant … Full filing |
9.0% |
| ROYAL BANK OF CANADA 13G · institution -1.0 pts · filed 2026-02-13 | 7.7% |
| BANK OF MONTREAL /CAN/ 13G · institution new · filed 2026-05-13 | 6.0% |
| Rubric Capital Management LP 13G · institution new · filed 2025-07-09 | 5.4% |
Fell to 5% or below in the last year: FMR LLC (4.6%, 2026-05-06), MILLENNIUM MANAGEMENT LLC (4.4%, 2025-11-14), GOLDMAN SACHS GROUP INC (2.4%, 2025-11-13)
Insider purchases and sales in Q1 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
None reported in Q1 2025.
Holders, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| Brookfield Corp /ON/ 0.68% of their portfolio | 80.8m $755.4m | Added +9.7m |
| ROYAL BANK OF CANADA 0.06% of their portfolio | 28.2m $263.9m | Reduced -1.7m |
| MILLENNIUM MANAGEMENT LLC 0.15% of their portfolio | 16.5m $153.8m | Added +11.0m |
| FMR LLC 0.01% of their portfolio | 13.5m $126.0m | Added +5.2m |
| MORGAN STANLEY 0.01% of their portfolio | 12.8m $119.3m | Added +9.9m |
| BANK OF MONTREAL /CAN/ 0.06% of their portfolio | 12.6m $117.2m | Added +3.3m |
| Rubric Capital Management LP 2.01% of their portfolio | 12.0m $112.2m | Added +4.4m |
| VANGUARD GROUP INC 0.00% of their portfolio | 10.3m $96.1m | Added +62.1k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 8.1m $75.6m | Added +2.7m |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 7.6m $71.2m | Added +5.3m |
| OAKTREE CAPITAL MANAGEMENT LP 1.06% of their portfolio | 5.6m $52.1m | New |
| AMERICAN CENTURY COMPANIES INC 0.03% of their portfolio | 5.2m $48.6m | Added +342.6k |
| MACKENZIE FINANCIAL CORP 0.07% of their portfolio | 5.0m $47.1m | Reduced -10.0m |
| UBS Group AG 0.01% of their portfolio | 3.2m $29.6m | Added +894.5k |
| MAPLELANE CAPITAL, LLC 2.52% of their portfolio | 2.9m $27.0m | Added +1.8m |
| TD Asset Management Inc 0.02% of their portfolio | 2.8m $26.5m | Reduced -591.8k |
| Connor, Clark & Lunn Investment Management Ltd. 0.11% of their portfolio | 2.7m $25.1m | Reduced -5.3m |
| NATIONAL BANK OF CANADA /FI/ 0.03% of their portfolio | 2.7m $25.0m | Added +1.2m |
| Potrero Capital Research LLC 11.16% of their portfolio | 2.4m $22.7m | Added +105.0k |
| Arvin Capital Management LP 8.36% of their portfolio | 2.4m $22.7m | New |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.02% of their portfolio | 2.3m $21.5m | Reduced -1.1m |
| CIBC WORLD MARKET INC. 0.04% of their portfolio | 2.1m $19.5m | Added +303.1k |
| RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio | 2.0m $18.7m | Added +303.2k |
| Yaupon Capital Management LP 1.15% of their portfolio | 1.7m $15.7m | Added +974.3k |
| BANK OF NOVA SCOTIA 0.03% of their portfolio | 1.5m $13.7m | Reduced -686.2k |
| Federation des caisses Desjardins du Quebec 0.06% of their portfolio | 1.4m $13.0m | Reduced -1.2m |
| D. E. Shaw & Co., Inc. 0.02% of their portfolio | 1.4m $12.9m | Added +694.9k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 1.2m $11.0m | Added +261.8k |
| TORONTO DOMINION BANK 0.03% of their portfolio | 1.1m $10.7m | Reduced -861.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.0m $9.5m | Added +820.0k |
| Valiant Capital Management, L.P. 0.97% of their portfolio | 960.1k $9.0m | New |
| Artemis Investment Management LLP 0.13% of their portfolio | 943.0k $8.8m | Added +437.5k |
| Invesco Ltd. 0.00% of their portfolio | 904.3k $8.5m | Added +832.0k |
| FIRST MANHATTAN CO. LLC. 0.02% of their portfolio | 881.7k $8.3m | Reduced -8.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 842.5k $7.9m | Reduced -24.0k |
| Rokos Capital Management LLP 0.19% of their portfolio | 768.2k $7.2m | Reduced -472.7k |
| BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp 0.04% of their portfolio | 697.4k $6.5m | Added +579.6k |
| Waratah Capital Advisors Ltd. 0.37% of their portfolio | 578.0k $5.4m | Reduced -4.8m |
| Clayton Partners LLC 4.56% of their portfolio | 561.3k $5.2m | Reduced -218.7k |
| Swiss National Bank 0.00% of their portfolio | 552.6k $5.2m | Added +51.5k |
| INTACT INVESTMENT MANAGEMENT INC. 0.18% of their portfolio | 549.0k $5.1m | Reduced -794.4k |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.04% of their portfolio | 516.3k $4.8m | Reduced -5.3k |
| STATE STREET CORP 0.00% of their portfolio | 490.9k $4.6m | Reduced -22.3k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.00% of their portfolio | 450.0k $4.2m | New |
| Allianz Asset Management GmbH 0.01% of their portfolio | 422.0k $3.9m | New |
| BARCLAYS PLC 0.00% of their portfolio | 377.0k $3.5m | Added +229.3k |
| Brevan Howard Capital Management LP 0.10% of their portfolio | 373.0k $3.5m | Added +118.0k |
| Trexquant Investment LP 0.04% of their portfolio | 353.7k $3.3m | Added +265.6k |
| SCOTIA CAPITAL INC. 0.02% of their portfolio | 328.0k $3.1m | Reduced -253.3k |
| CIBC Asset Management Inc 0.01% of their portfolio | 326.6k $3.0m | Reduced -1.6k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 306.7k $2.9m | Added +292.9k |
| MOORE CAPITAL MANAGEMENT, LP 0.09% of their portfolio | 303.0k $2.7m | New |
| Legal & General Group Plc 0.00% of their portfolio | 300.2k $2.8m | Added +47.3k |
| Man Group plc 0.01% of their portfolio | 285.0k $2.7m | New |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 283.0k $2.6m | Added +185.0k |
| LOUISBOURG INVESTMENTS INC. 0.68% of their portfolio | 267.1k $2.5m | Added +23.8k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 247.7k $2.3m | Reduced -149.7k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 247.6k $2.3m | New |
| BlackRock, Inc. 0.00% of their portfolio | 244.1k $2.3m | Added +2.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 225.2k $2.1m | Reduced -180.5k |
| Nuveen, LLC 0.00% of their portfolio | 220.3k $2.1m | First filing |
| Tacita Capital Inc 1.48% of their portfolio | 219.3k $2.0m | Reduced -4.8k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 215.4k $2.0m | Reduced -473.3k |
| Mitsubishi UFJ Trust & Banking Corp 0.01% of their portfolio | 214.7k $2.0m | Reduced -80.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 209.0k $2.0m | Added +45.5k |
| SONA ASSET MANAGEMENT (US) LLC 0.07% of their portfolio | 200.0k $1.9m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 147.6k $1.4m | Added +20.8k |
| Cardinal Point Capital Management ULC 0.12% of their portfolio | 144.8k $1.4m | New |
| ARDSLEY ADVISORY PARTNERS LP 0.28% of their portfolio | 130.0k $1.2m | Reduced -545.0k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 127.6k $1.2m | New |
| Alberta Investment Management Corp 0.01% of their portfolio | 121.2k $1.1m | Unchanged |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 105.7k $988.1k | Reduced -59.1k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 104.3k $989.0k | Unchanged |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio | 101.1k $943.2k | Added +14.3k |
| Caption Management, LLC 0.04% of their portfolio | 98.5k $920.9k | Added +60.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 90.5k $845.9k | Reduced -295.2k |
| Greenland Capital Management LP 0.14% of their portfolio | 87.2k $813.4k | Added +30.2k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio | 86.0k $804.1k | New |
| Vident Advisory, LLC 0.01% of their portfolio | 84.5k $790.4k | Added +15.5k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 78.1k $729.0k | Added +4.2k |
| Heronetta Management, L.P. 0.56% of their portfolio | 77.0k $1.0m | Unchanged |
| Guardian Partners Inc. 0.06% of their portfolio | 76.0k $628.6k | Reduced -3.4k |
| VAN ECK ASSOCIATES CORP 0.00% of their portfolio | 74.8k $699.0k | Reduced -5.2k |
| Mariner, LLC 0.00% of their portfolio | 73.4k $686.2k | Reduced -1.2k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 70.8k $661.3k | Added +14.3k |
| BESSEMER GROUP INC 0.00% of their portfolio | 68.3k $638.0k | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 67.8k $633.1k | Added +14.6k |
| SIMPLEX TRADING, LLC 0.02% of their portfolio | 64.1k $599.0k | Added +35.7k |
| Aigen Investment Management, LP 0.13% of their portfolio | 62.8k $843.7k | New |
| Quantbot Technologies LP 0.02% of their portfolio | 61.0k $570.6k | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 60.4k $564.8k | First filing |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 59.4k $555.2k | Added +1.3k |
| TD Waterhouse Canada Inc. 0.00% of their portfolio | 59.0k $547.7k | Reduced -402.5k |
| Rathbones Group PLC 0.00% of their portfolio | 57.0k $531.9k | Unchanged |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 56.9k $532.2k | Reduced -214.3k |
| CITIGROUP INC 0.00% of their portfolio | 56.9k $530.9k | Reduced -483 |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 56.4k $527.6k | Reduced -777.3k |
| Versor Investments LP 0.09% of their portfolio | 56.4k $526.4k | New |
| Clear Harbor Asset Management, LLC 0.04% of their portfolio | 55.4k $518.0k | Reduced -500 |
| GROUP ONE TRADING LLC 0.02% of their portfolio | 52.5k $491.1k | Reduced -114.0k |