Company · Ownership research

TRANSALTA CORP TAC

CIK 0001144800 · CUSIP 89346D107

Insider tradingInitial holdingsInstitutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 89346D107 (TAC), not CUSIP 89346D907 (TAC), CUSIP 89346D957 (TAC), CUSIP 89346D958 (TAC), and does not merge CUSIPs.

This page lists the top 20 of 90 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BANK OF MONTREAL /CAN/ CIK 927971 · View history	$221.63M 18,315,196 shares	0.08%	-3.56M(-16.30%)Reduced	SEC filing ↗ Nov 9, 2026	▾
02	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$79.20M 6,545,308 shares	0.03%	-288.48K(-4.20%)Reduced	SEC filing ↗ Nov 12, 2026	▾
03	MACKENZIE FINANCIAL CORP CIK 919859 · View history	$56.62M 4,680,519 shares	0.06%	-214.33K(-4.40%)Reduced	SEC filing ↗ Nov 2, 2026	▾
04	CIBC WORLD MARKET INC. CIK 1421224 · View history	$38.20M 3,156,297 shares	0.07%	+855.66K(+37.20%)Added	SEC filing ↗ Nov 10, 2026	▾
05	UBS Group AG CIK 1610520 · View history	$25.55M 2,115,265 shares	0.00%	+256.79K(+13.80%)Added	SEC filing ↗ Nov 10, 2026	▾
06	Clearbridge Investments, LLC CIK 1348883 · View history	$22.72M 1,880,536 shares	0.02%	+531.04K(+39.40%)Added	SEC filing ↗ Nov 12, 2026	▾
07	MMCAP International Inc. SPC CIK 1304857 · View history	$21.83M 1,803,600 shares	1.43%	+493.50K(+37.70%)Added	SEC filing ↗ Nov 12, 2026	▾
08	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$21.48M 1,778,341 shares	0.00%	+109.11K(+6.50%)Added	SEC filing ↗ Nov 4, 2026	▾
09	Canoe Financial LP CIK 1908219 · Amended · View history	$20.21M 1,659,100 shares	0.25%	+1.11M(+201.70%)Added	SEC filing ↗ Oct 21, 2026	▾
10	Alberta Investment Management Corp CIK 1463559 · View history	$19.01M 1,570,852 shares	0.11%	+1.50M(+2,117.10%)Added	SEC filing ↗ Nov 9, 2026	▾
11	STATE STREET CORP CIK 93751 · View history	$15.15M 1,250,130 shares	0.00%	+106(0.00%)Added	SEC filing ↗ Nov 12, 2026	▾
12	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$13.53M 1,118,299 shares	0.02%	+59.30K(+5.60%)Added	SEC filing ↗ Nov 10, 2026	▾
13	PCJ Investment Counsel Ltd. CIK 1426318 · View history	$12.85M 1,061,640 shares	3.44%	+408.35K(+62.50%)Added	SEC filing ↗ Nov 10, 2026	▾
14	SCOTIA CAPITAL INC. CIK 1335644 · View history	$12.19M 1,016,881 shares	0.04%	+546.06K(+116.00%)Added	SEC filing ↗ Nov 10, 2026	▾
15	BARCLAYS PLC CIK 312069 · View history	$10.60M 877,264 shares	0.00%	+14.95K(+1.70%)Added	SEC filing ↗ Nov 6, 2026	▾
16	NewGen Asset Management Ltd CIK 1845012 · View history	$10.29M 850,000 shares	6.65%	+300.00K(+54.50%)Added	SEC filing ↗ Nov 12, 2026	▾
17	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$9.45M 782,195 shares	0.01%	-540.50K(-40.90%)Reduced	SEC filing ↗ Nov 12, 2026	▾
18	CITIGROUP INC CIK 831001 · View history	$9.35M 771,232 shares	0.00%	-311.93K(-28.80%)Reduced	SEC filing ↗ Nov 4, 2026	▾
19	Invesco Ltd. CIK 914208 · View history	$8.40M 695,433 shares	0.00%	+172.78K(+33.10%)Added	SEC filing ↗ Nov 12, 2026	▾
20	Purpose Unlimited Inc. CIK 2115120 · View history	$8.11M 667,514 shares	0.29%	-18.20K(-2.70%)Reduced	SEC filing ↗ Nov 12, 2026	▾

Showing 20 / 90 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

59,080,601

Not deduplicated across managers

Disclosed value

$715.00M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

TRANSALTA CORP · Q3 2026

Explore all 90 reporting institutions.

This page includes 20 of 90 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.