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 ($69.7m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $10.79. Options: 16 managers hold calls ($40.5m notional), 7 hold puts ($13.5m).
Trends to Q2 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 |
| Q2 2025 | 169 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| 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 |
| Q2 2025 | 79 | 90 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $15.1m | $8.1m | 0.54 |
| Q4 2024 | $36.6m | $9.8m | 0.27 |
| Q1 2025 | $57.9m | $4.7m | 0.08 |
| Q2 2025 | $40.5m | $13.5m | 0.33 |
Biggest buyers
| ROYAL BANK OF CANADA | Added | +43.2m |
| GOLDMAN SACHS GROUP INC | Added | +4.3m |
| Rubric Capital Management LP | Added | +3.9m |
| FMR LLC | Added | +3.4m |
| MILLENNIUM MANAGEMENT LLC | Added | +1.8m |
| CITADEL ADVISORS LLC | Added | +1.3m |
| TORONTO DOMINION BANK | Added | +1.2m |
| CenterBook Partners LP | New | +775.5k |
| WESTERLY CAPITAL MANAGEMENT, LLC | New | +767.5k |
| STATE STREET CORP | Added | +757.9k |
Biggest sellers
| Brookfield Corp /ON/ | Reduced | -53.9m |
| MORGAN STANLEY | Reduced | -3.9m |
| BANK OF MONTREAL /CAN/ | Reduced | -3.5m |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Sold out | -2.3m |
| AMERICAN CENTURY COMPANIES INC | Reduced | -2.2m |
| MAPLELANE CAPITAL, LLC | Reduced | -2.1m |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | -1.7m |
| TD Asset Management Inc | Reduced | -1.6m |
| NATIONAL BANK OF CANADA /FI/ | Reduced | -1.1m |
| JPMORGAN CHASE & CO | Reduced | -994.2k |
Biggest calls
| MILLENNIUM MANAGEMENT LLC | New | $14.7m1.0m shares |
| Arvin Capital Management LP | Reduced | $10.5m973.1k shares |
| SIG North Trading, ULC | Reduced | $3.4m318.9k shares |
| ROYAL BANK OF CANADA | Added | $3.0m282.0k shares |
| PEAK6 LLC | Reduced | $2.6m242.2k shares |
| J. Goldman & Co LP | New | $1.6m150.0k shares |
| CITADEL ADVISORS LLC | Added | $1.0m96.1k shares |
| NATIONAL BANK OF CANADA /FI/ | Added | $877.8k814 shares |
| JANE STREET GROUP, LLC | Reduced | $664.7k61.6k shares |
| GROUP ONE TRADING LLC | Added | $615.0k57.0k shares |
Biggest puts
| MILLENNIUM MANAGEMENT LLC | New | $5.9m400.0k shares |
| SIG North Trading, ULC | Added | $4.6m430.6k shares |
| ROYAL BANK OF CANADA | New | $1.7m160.0k shares |
| CITADEL ADVISORS LLC | Reduced | $724.0k67.1k shares |
| NATIONAL BANK OF CANADA /FI/ | Added | $415.2k385 shares |
| TORONTO DOMINION BANK | Reduced | $64.8k6.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 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 Q2 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 Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| ROYAL BANK OF CANADA 0.08% of their portfolio | 71.4m $770.8m | Added +43.2m |
| Brookfield Corp /ON/ 0.35% of their portfolio | 26.9m $290.6m | Reduced -53.9m |
| MILLENNIUM MANAGEMENT LLC 0.18% of their portfolio | 18.2m $196.5m | Added +1.8m |
| FMR LLC 0.01% of their portfolio | 16.9m $182.5m | Added +3.4m |
| Rubric Capital Management LP 2.77% of their portfolio | 15.9m $172.1m | Added +3.9m |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 11.9m $128.1m | Added +4.3m |
| VANGUARD GROUP INC 0.00% of their portfolio | 10.7m $115.4m | Added +409.4k |
| BANK OF MONTREAL /CAN/ 0.05% of their portfolio | 9.1m $97.7m | Reduced -3.5m |
| MORGAN STANLEY 0.01% of their portfolio | 8.8m $95.5m | Reduced -3.9m |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 7.6m $81.8m | Reduced -506.4k |
| OAKTREE CAPITAL MANAGEMENT LP 1.30% of their portfolio | 6.1m $65.5m | Added +500.0k |
| MACKENZIE FINANCIAL CORP 0.07% of their portfolio | 5.0m $54.0m | Reduced -44.4k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 3.1m $33.0m | Reduced -2.2m |
| Arvin Capital Management LP 9.04% of their portfolio | 2.9m $31.7m | Added +505.7k |
| UBS Group AG 0.01% of their portfolio | 2.8m $29.8m | Reduced -400.6k |
| CIBC WORLD MARKET INC. 0.06% of their portfolio | 2.6m $28.4m | Added +541.3k |
| Potrero Capital Research LLC 12.63% of their portfolio | 2.5m $27.2m | Added +90.0k |
| TORONTO DOMINION BANK 0.05% of their portfolio | 2.3m $25.3m | Added +1.2m |
| NATIONAL BANK OF CANADA /FI/ 0.02% of their portfolio | 1.5m $16.6m | Reduced -1.1m |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 1.4m $15.0m | Reduced -609.1k |
| Artemis Investment Management LLP 0.18% of their portfolio | 1.3m $14.2m | Added +376.8k |
| BANK OF NOVA SCOTIA 0.03% of their portfolio | 1.3m $14.2m | Reduced -145.9k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 1.3m $14.0m | Added +120.6k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 1.3m $13.9m | Added +1.3m |
| TD Asset Management Inc 0.01% of their portfolio | 1.3m $13.6m | Reduced -1.6m |
| STATE STREET CORP 0.00% of their portfolio | 1.2m $13.5m | Added +757.9k |
| Yaupon Capital Management LP 0.83% of their portfolio | 1.2m $12.5m | Reduced -519.6k |
| Invesco Ltd. 0.00% of their portfolio | 1.1m $11.6m | Added +170.8k |
| Federation des caisses Desjardins du Quebec 0.05% of their portfolio | 1.0m $11.0m | Reduced -366.1k |
| Connor, Clark & Lunn Investment Management Ltd. 0.04% of their portfolio | 1.0m $10.9m | Reduced -1.7m |
| FIRST MANHATTAN CO. LLC. 0.03% of their portfolio | 863.2k $9.4m | Reduced -18.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 802.5k $8.6m | Reduced -40.0k |
| MAPLELANE CAPITAL, LLC 0.52% of their portfolio | 785.0k $8.5m | Reduced -2.1m |
| CenterBook Partners LP 0.46% of their portfolio | 775.5k $8.4m | New |
| Rokos Capital Management LLP 0.14% of their portfolio | 768.2k $8.3m | Unchanged |
| WESTERLY CAPITAL MANAGEMENT, LLC 3.51% of their portfolio | 767.5k $8.3m | New |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 730.6k $7.9m | Added +482.9k |
| INTACT INVESTMENT MANAGEMENT INC. 0.25% of their portfolio | 692.5k $7.5m | Added +143.5k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 667.2k $7.2m | Reduced -720.2k |
| Clayton Partners LLC 6.00% of their portfolio | 661.6k $7.1m | Added +100.3k |
| Value Aligned Research Advisors, LLC 0.31% of their portfolio | 633.6k $6.8m | New |
| Swiss National Bank 0.00% of their portfolio | 544.5k $5.9m | Reduced -8.1k |
| BARCLAYS PLC 0.00% of their portfolio | 506.9k $5.5m | Added +129.9k |
| Waratah Capital Advisors Ltd. 0.35% of their portfolio | 478.0k $5.2m | Reduced -100.0k |
| Allianz Asset Management GmbH 0.01% of their portfolio | 394.4k $4.2m | Reduced -27.5k |
| Trexquant Investment LP 0.04% of their portfolio | 319.9k $3.5m | Reduced -33.9k |
| SCOTIA CAPITAL INC. 0.02% of their portfolio | 317.2k $3.4m | Reduced -10.8k |
| BlackRock, Inc. 0.00% of their portfolio | 313.5k $3.4m | Added +69.4k |
| Legal & General Group Plc 0.00% of their portfolio | 309.1k $3.3m | Added +8.9k |
| MOORE CAPITAL MANAGEMENT, LP 0.06% of their portfolio | 303.0k $2.8m | Unchanged |
| Balyasny Asset Management L.P. 0.01% of their portfolio | 295.3k $3.2m | Added +238.4k |
| CIBC Asset Management Inc 0.01% of their portfolio | 252.0k $2.7m | Reduced -74.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 229.8k $2.5m | Added +20.8k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 225.2k $2.4m | Unchanged |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.02% of their portfolio | 222.2k $2.4m | Reduced -294.1k |
| Tacita Capital Inc 1.52% of their portfolio | 219.3k $2.4m | Unchanged |
| Nuveen, LLC 0.00% of their portfolio | 213.0k $2.3m | Reduced -7.4k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 211.6k $2.3m | Reduced -3.7k |
| Mitsubishi UFJ Trust & Banking Corp 0.01% of their portfolio | 207.5k $2.2m | Reduced -7.2k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 206.8k $2.2m | Reduced -40.8k |
| SONA ASSET MANAGEMENT (US) LLC 0.07% of their portfolio | 200.0k $2.2m | Unchanged |
| Greenland Capital Management LP 0.25% of their portfolio | 181.1k $1.9m | Added +94.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 176.6k $1.9m | Added +86.1k |
| Cardinal Point Capital Management ULC 0.15% of their portfolio | 173.0k $1.9m | Added +28.2k |
| BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp 0.01% of their portfolio | 158.3k $1.7m | Reduced -539.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 152.8k $1.7m | Added +5.2k |
| Verition Fund Management LLC 0.01% of their portfolio | 141.7k $1.5m | New |
| SIG North Trading, ULC 0.31% of their portfolio | 131.4k $1.4m | Added +112.2k |
| Alberta Investment Management Corp 0.01% of their portfolio | 121.2k $1.3m | Unchanged |
| Brevan Howard Capital Management LP 0.01% of their portfolio | 120.0k $1.3m | Reduced -253.0k |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. 0.02% of their portfolio | 118.3k $1.7m | New |
| Bridgewater Associates, LP 0.00% of their portfolio | 113.8k $1.2m | New |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.00% of their portfolio | 107.9k $1.2m | Added +6.8k |
| ARDSLEY ADVISORY PARTNERS LP 0.19% of their portfolio | 105.0k $1.1m | Reduced -25.0k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 104.5k $1.1m | New |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 104.3k $1.1m | Unchanged |
| Y-Intercept (Hong Kong) Ltd 0.03% of their portfolio | 96.3k $1.0m | New |
| Caption Management, LLC 0.09% of their portfolio | 92.7k $999.8k | Reduced -5.8k |
| Cinctive Capital Management LP 0.05% of their portfolio | 91.1k $982.1k | New |
| Heronetta Management, L.P. 0.70% of their portfolio | 85.0k $1.2m | Added +8.0k |
| Mariner, LLC 0.00% of their portfolio | 84.5k $911.8k | Added +11.1k |
| BTG Pactual Asset Management US LLC 0.12% of their portfolio | 83.8k $904.0k | New |
| Vident Advisory, LLC 0.01% of their portfolio | 80.4k $867.6k | Reduced -4.1k |
| ExodusPoint Capital Management, LP 0.01% of their portfolio | 77.6k $837.0k | New |
| Guardian Partners Inc. 0.07% of their portfolio | 75.0k $794.9k | Reduced -999 |
| VAN ECK ASSOCIATES CORP 0.00% of their portfolio | 73.8k $797.0k | Reduced -967 |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 72.7k $782.5k | Added +4.8k |
| TD Waterhouse Canada Inc. 0.01% of their portfolio | 70.6k $753.8k | Added +11.5k |
| BESSEMER GROUP INC 0.00% of their portfolio | 68.3k $735.0k | Unchanged |
| Squarepoint Ops LLC 0.00% of their portfolio | 64.8k $698.9k | Added +26.2k |
| Centiva Capital, LP 0.04% of their portfolio | 62.0k $669.1k | New |
| Timelo Investment Management Inc. 2.24% of their portfolio | 60.0k $647.4k | New |
| CITIGROUP INC 0.00% of their portfolio | 59.9k $644.7k | Added +3.0k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 58.4k $629.7k | Reduced -1.0k |
| Rathbones Group PLC 0.00% of their portfolio | 57.0k $614.0k | Unchanged |
| Quantbot Technologies LP 0.02% of their portfolio | 56.9k $614.2k | Reduced -4.1k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 56.4k $608.9k | Unchanged |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 56.0k $602.9k | Reduced -14.8k |
| Clear Harbor Asset Management, LLC 0.04% of their portfolio | 54.3k $585.9k | Reduced -1.1k |
| Creative Planning 0.00% of their portfolio | 51.3k $553.9k | Added +3.3k |