TransAlta Corporation (TAC) Ownership
TAC ownership summary
as of October 18, 2026- Institutions
- 81.0% of shares outstanding
- Insiders
- 0.27% of shares outstanding
- Shares outstanding
- 316.3M
- Float
- 265.7M shares available to trade
- Short interest
- 4.52% 14.3M shares short
- Days to cover
- 6.93 short interest up 23.0% vs prior month
- Institutions 80.98%
- Insiders 0.27%
- Other investors 18.75%
TAC top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Royal Bank of Canada | 8.92% | 28.2M | $362.4M | +2.9M (+11.4%) | June 30, 2026 |
| 2 | Brookfield Corp | 8.52% | 27.0M | $346.4M | +6,233 (+0.0%) | June 30, 2026 |
| 3 | Bank of Montreal | 6.92% | 21.9M | $281.1M | +4.2M (+23.5%) | June 30, 2026 |
| 4 | BMO Capital Markets Corp. | 6.92% | 21.9M | $281.1M | +4.2M (+23.5%) | June 30, 2026 |
| 5 | Rubric Capital Management LP | 6.40% | 20.2M | $260.0M | +2.5M (+13.8%) | June 30, 2026 |
| 6 | The Toronto-Dominion Bank | 3.70% | 11.7M | $150.5M | +7.1M (+155.6%) | June 30, 2026 |
| 7 | Morgan Stanley - Brokerage Accounts | 3.60% | 11.4M | $146.4M | +6.1M (+117.2%) | June 30, 2026 |
| 8 | The Goldman Sachs Group Inc | 3.36% | 10.6M | $136.5M | +3.1M (+41.1%) | June 30, 2026 |
| 9 | Millennium Management LLC | 3.30% | 10.4M | $134.0M | +2.1M (+25.4%) | June 30, 2026 |
| 10 | Bank of America Corp | 2.82% | 8.9M | $114.7M | +968,068 (+12.2%) | June 30, 2026 |
| 11 | Vanguard Capital Management, LLC | 2.47% | 7.8M | $100.2M | +58,595 (+0.8%) | June 30, 2026 |
| 12 | American Century Companies Inc | 2.16% | 6.8M | $87.8M | +529,097 (+8.4%) | June 30, 2026 |
| 13 | Mackenzie Investments | 1.55% | 4.9M | $62.9M | +210,649 (+4.5%) | June 30, 2026 |
| 14 | Arvin Capital Management LP | 1.18% | 3.7M | $48.1M | −746,052 (−16.6%) | June 30, 2026 |
| 15 | NORGES BANK | 1.13% | 3.6M | $46.0M | — | June 30, 2026 |
| 16 | Citadel Advisors Llc | 1.01% | 3.2M | $41.0M | +1.6M (+95.2%) | June 30, 2026 |
| 17 | Oaktree Capital Management LLC | 0.95% | 3.0M | $38.5M | −3.4M (−53.2%) | June 30, 2026 |
| 18 | Vanguard Fiduciary Trust Co | 0.76% | 2.4M | $30.8M | +33,552 (+1.4%) | June 30, 2026 |
| 19 | CIBC World Markets Inc. | 0.73% | 2.3M | $29.6M | +17,339 (+0.8%) | June 30, 2026 |
| 20 | Value Aligned Research Advisors LLC | 0.68% | 2.1M | $27.5M | −456,366 (−17.6%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 16 holders added 35.5M shares and 3 cut 4.6M.
TAC top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | RBC Canadian Dividend Fund A | 3.02% | 9.5M | $122.6M | +529,800 (+5.9%) | June 30, 2026 |
| 2 | American Century Small Cap Growth Inv | 1.36% | 4.3M | $55.5M | −286,260 (−6.2%) | September 30, 2026 |
| 3 | Vanguard Total Intl Stock Index Inv | 1.24% | 3.9M | $50.3M | — | August 31, 2026 |
| 4 | BMO Equal Weight Utilities ETF | 1.23% | 3.9M | $50.1M | −6,699 (−0.2%) | September 17, 2026 |
| 5 | RBC North American Value Fund A | 0.96% | 3.0M | $39.2M | −125,000 (−3.9%) | June 30, 2026 |
| 6 | BlackRock Global Equity Mkt Netrl Instl | 0.91% | 2.9M | $37.1M | −199,484 (−6.5%) | July 31, 2026 |
| 7 | Vanguard Developed Markets Index Admiral | 0.88% | 2.8M | $35.6M | +130,666 (+4.9%) | September 30, 2026 |
| 8 | iShares Core S&P/TSX Cap Composite ETF | 0.62% | 2.0M | $25.3M | −11,430 (−0.6%) | September 30, 2026 |
| 9 | iShares Global Infrastructure ETF Comm | 0.56% | 1.8M | $22.7M | — | September 30, 2026 |
| 10 | RBC Private Canadian Equity Pool I | 0.56% | 1.8M | $22.6M | — | June 30, 2026 |
| 11 | RBC Private Canadian Dividend Pool I | 0.53% | 1.7M | $21.4M | +79,483 (+5.0%) | June 30, 2026 |
| 12 | iProfile Canadian Equity Private Pool I | 0.52% | 1.7M | $21.3M | — | July 31, 2026 |
| 13 | iShares S&P/TSX Capped Utilities ETF | 0.51% | 1.6M | $20.7M | −1,633 (−0.1%) | September 30, 2026 |
| 14 | United Canadian Equity Alpha Corp Cl E | 0.46% | 1.5M | $18.8M | — | March 31, 2026 |
| 15 | CI Canadian Investment Fund Class A | 0.46% | 1.5M | $18.7M | — | June 30, 2026 |
| 16 | CI Global Infrastructure X | 0.45% | 1.4M | $18.3M | — | June 30, 2026 |
| 17 | PH&N Canadian Equity Value Fund F | 0.42% | 1.3M | $17.2M | +82,923 (+6.6%) | June 30, 2026 |
| 18 | CI Global Infrastructure Pri Pl ETF C$ | 0.36% | 1.2M | $14.8M | +252,914 (+28.1%) | September 30, 2026 |
| 19 | DFA International Core Equity 2 I | 0.35% | 1.1M | $14.2M | — | August 31, 2026 |
| 20 | RBC Canadian Equity Income F | 0.35% | 1.1M | $14.1M | — | June 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
TAC insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2017-11-22 | Clive Massey | Sell | $0.41 | 10,000 | $4,100 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
TAC shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns TAC
Institutional investors own 81.0% of TransAlta's shares and insiders 0.27%. The largest holder is Royal Bank of Canada with 8.92% of the shares (28.2M), as of June 30, 2026. Among the top 20 institutions, 16 added shares and 3 reduced their stake in the latest filings. Short interest is 4.52% of the float, or 6.93 days of average trading volume. The share count rose 7.2% since 2014.
Related: TAC analyst forecast, TAC key metrics, TAC dividend history. See the TAC stock overview for the latest quote and news.
TAC ownership FAQ
Who owns the most TransAlta stock?
The largest shareholders of TransAlta are Royal Bank of Canada (8.92%), Brookfield Corp (8.52%), Bank of Montreal (6.92%), BMO Capital Markets Corp. (6.92%), Rubric Capital Management LP (6.40%).
What percentage of TransAlta is owned by institutions?
Institutions hold 81.0% of TransAlta's shares outstanding; insiders hold 0.27%.
Which funds own TransAlta?
The largest fund holders of TransAlta are RBC Canadian Dividend Fund A (3.02%), American Century Small Cap Growth Inv (1.36%), Vanguard Total Intl Stock Index Inv (1.24%), BMO Equal Weight Utilities ETF (1.23%), RBC North American Value Fund A (0.96%).
What is TransAlta's short interest?
14.3M shares of TransAlta were sold short, 4.52% of the float; at the average daily volume it would take 6.93 days to cover.
Are insiders buying or selling TransAlta?
Of the latest 1 reported insider transactions in TransAlta (since November 22, 2017), 0 were purchases and 1 were sales.
How many shares of TransAlta are outstanding?
TransAlta has 316.3M shares outstanding, of which 265.7M are in the public float.