Atco Ltd. (TSX: ACO)
ACO trades on the Toronto Stock Exchange in Utilities & Pipelines, headquartered in Alberta. Numbers below come from the TMX issuer list, Yahoo Finance closes and the Bank of Canada rate, each with its source.
Issuer list, sector and C$ market cap: TMX Group TSX and TSXV listed companies, as of September 30, 2026. US$ figures convert C$ at 1.4263 C$ per US$, the Bank of Canada daily rate for October 14, 2026. Close and returns: Yahoo Finance daily closes for ACO-X.TO, last bar 2026-10-14, computed by Sophia Capital. Website: Wikidata.
Profile
| Field | Value |
|---|---|
| Ticker | ACO on the Toronto Stock Exchange |
| Yahoo symbol | ACO-X.TO |
| Sector | Utilities & Pipelines |
| Headquarters | Alberta |
| Listed | 1968-03-08 |
| Listing type | TMX leaves listing type blank for long-listed issuers |
| Shares outstanding | 100,985,167 |
| Also listed on | No interlisting on the TMX list |
| Index membership | S&P/TSX Composite |
| SEC CIK | No SEC filer matched on exact name with a Canadian address or US interlisting |
| Website | www.atco.com |
Returns
| Window | Return |
|---|---|
| 1 day | +2.2% |
| 1 week | -2.1% |
| 1 month | +11.1% |
| 3 months | +4.3% |
| 6 months | +13.4% |
| Year to date | +40.7% |
| 1 year | +55.0% |
| From 52-week high | -3.2% |
| 52-week range | C$51.32 to C$81.91 |
Links
SEDAR+ is linked for searching only; nothing on this page is taken from it.
Recent Canadian filings by type
No documents in our index for this company: it files on SEDAR+ only and has no SEC filer record. Search SEDAR+ for its filings.
Trading halts
Trading: the last notice, on 2026-02-23, was a resumption.
| Notice | Action | Reason | Notice |
|---|---|---|---|
| 2026-02-23 9:00 AM ET | Resumption | No reason stated | CIRO notice |
| 2026-02-23 8:19 AM ET | Halt | Dissemination | CIRO notice |
Source: Canadian Investment Regulatory Organization (CIRO), Halts/Resumptions newsroom, notices since 2024-10-15.
Upcoming events
No upcoming earnings date, call or meeting announced in the SEC filings and newswire releases we read.
Source: dates read from the company's SEC filings and newswire releases; each row links to the announcement.
Peers in Utilities & Pipelines
| Ticker | Company | Exchange | Market cap (C$) | 1 month | 1 year |
|---|---|---|---|---|---|
| TA | TransAlta Corporation | TSX | C$6.4B | +10.2% | -17.2% |
| SOBO | South Bow Corporation | TSX | C$9.8B | -2.5% | +26.9% |
| CPX | Capital Power Corporation | TSX | C$10.1B | +5.2% | -12.1% |
| CU | Canadian Utilities Limited | TSX | C$11.8B | -0.4% | +27.4% |
| KEY | Keyera Corp. | TSX | C$15.1B | +1.2% | +26.4% |
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