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TransAlta TAC

US equityMarket cap rank #2280
$12.47 +$0.12 (+0.97%)
Pre-market · Oct 6, 4:10 am ET · After hours $12.47 0.00%
Open$12.39
Prev close$12.35
Day range$12.17 – $12.54
Volume770.9K
Market cap$3.94B
P/E (TTM)–
Dividend yield1.50%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership78.4%-3.68 pts vs. prior quarter
Institutions holding208-1 vs. prior quarter
Insider trades (recent)7 buys / 0 sellsNet buying
Short interest4.32% of floatDays to cover 5.2 · as of 15 Sep 2026
Short-sale volume share36.4%5-day average of daily volume

Short-sale volume as % of daily volume

9%21%33%45%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$2.75M (7 inflow days, 13 outflow days).

The five largest holders on file together own 34.0% of shares outstanding.

Largest holders

  • Brookfield Corporation9.47%
  • RBC Global Asset Management Inc.7.46%
  • BMO Asset Management6.92%
  • Rubric Capital Management LP6.40%
  • The Toronto-Dominion Bank3.81%
  • Morgan Stanley3.59%
  • Millennium Management LLC3.30%
  • Vanguard Capital Management, LLC3.22%

By investor type

  • Mutual Fund33.71%
  • Hedge Fund16.09%
  • Public Company13.17%
  • VC/PE Fund9.47%
  • Private Company4.22%
  • Sovereign Wealth Fund1.13%
  • Government Pension Fund0.53%
  • Individual/Insider0.12%

Reported short interest has risen from 1.80% to 4.32% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 13,673,000 4.3% 5.2
31 Aug 2026 11,605,180 3.7% 8.0
14 Aug 2026 8,790,348 2.8% 4.6
31 Jul 2026 8,335,709 2.6% 5.4
15 Jul 2026 6,567,245 2.1% 4.3
30 Jun 2026 5,697,097 1.8% 3.6

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