| Data | Ora | Fonte | Titolo | Simbolo | Compagnia |
| 28/11/2011 | 15:00 | Marketwired | ATCO to Build 1,700-Person Camp and Office Complex in Northern Chile | TSX:ACO.Y | ATCO Ltd |
| 21/11/2011 | 15:00 | Marketwired | ATCO an Official Sponsor of Lake Louise Winterstart World Cup | TSX:ACO.Y | ATCO Ltd |
| 17/11/2011 | 15:00 | Marketwired | ATCO Quiets Large New York City Power Plant | TSX:ACO.Y | ATCO Ltd |
| 09/11/2011 | 23:12 | Marketwired | ATCO Releases 2010 Sustainability Report | TSX:ACO.Y | ATCO Ltd |
| 28/10/2011 | 14:07 | Marketwired Canada | ATCO Reports Third Quarter 2011 Earnings | TSX:ACO.Y | ATCO Ltd |
| 21/10/2011 | 21:36 | Marketwired | ATCO Ltd. to Release Third Quarter Results Friday, October 28, 2011 | TSX:ACO.Y | ATCO Ltd |
| 20/10/2011 | 22:52 | Marketwired Canada | ATCO Ltd. Eligible Dividends | TSX:ACO.Y | ATCO Ltd |
| 27/09/2011 | 15:59 | Marketwired Canada | La tournée canadienne des mineurs chiliens rescapés arrive à Montréal | TSX:ACO.Y | ATCO Ltd |
| 26/09/2011 | 16:42 | Marketwired Canada | ATCO Structures & Logistics: la tournée canadienne des mineurs chiliens rescapés s'en vient à Québec | TSX:ACO.Y | ATCO Ltd |
| 14/09/2011 | 15:00 | Marketwired | ATCO Structures & Logistics Sponsors Rescued Chilean Miners' Canadian Tour | TSX:ACO.Y | ATCO Ltd |
| 07/09/2011 | 09:00 | Marketwired | ATCO Awarded 2,600-Person Workforce Accommodation in Australia | TSX:ACO.Y | ATCO Ltd |
| 17/08/2011 | 17:22 | Marketwired Canada | ATCO Structures & Logistics Expands Into Brazil Market | TSX:ACO.Y | ATCO Ltd |
| 05/08/2011 | 14:58 | Marketwired Canada | ATCO Provides Temporary Camp for Critical Military Exercises in Nunavut | TSX:ACO.Y | ATCO Ltd |
| 29/07/2011 | 15:06 | Marketwired | ATCO Reports Second Quarter 2011 Earnings | TSX:ACO.Y | ATCO Ltd |
| 29/07/2011 | 13:00 | Marketwired Canada | ATCO Completes Acquisition of Western Australia Gas Networks | TSX:ACO.Y | ATCO Ltd |
| 22/07/2011 | 14:30 | Marketwired Canada | ATCO Ltd. to Release Second Quarter Results Friday, July 29, 2011 | TSX:ACO.Y | ATCO Ltd |
| 13/07/2011 | 14:30 | Marketwired Canada | ATCO Signs Joint-Venture Agreement With Haisla First Nation | TSX:ACO.Y | ATCO Ltd |
| 07/07/2011 | 08:05 | Marketwired Canada | ATCO Signs Agreement to Acquire Western Australia Gas Networks | TSX:ACO.Y | ATCO Ltd |
| 21/06/2011 | 19:00 | Marketwired Canada | ATCO Named Legacy Sponsor of the 2012 Arctic Winter Games | TSX:ACO.Y | ATCO Ltd |
| 14/06/2011 | 18:00 | Marketwired Canada | ATCO Gas Opens New Environmentally Friendly Operations Centre | TSX:ACO.Y | ATCO Ltd |
| 25/05/2011 | 18:17 | Marketwired | ATCO Deploys 200-Person Work Camp to Slave Lake | TSX:ACO.Y | ATCO Ltd |
| 25/05/2011 | 14:30 | Marketwired Canada | ATCO Building Second Construction Village on Curtis Island | TSX:ACO.Y | ATCO Ltd |
| 17/05/2011 | 14:00 | Marketwired | ATCO to Supply 1,700-Person Workforce Accommodation for Queensland Curtis LNG Project | TSX:ACO.Y | ATCO Ltd |
| 13/05/2011 | 01:44 | Marketwired Canada | ATCO Energy Solutions Provides Emergency Support to Town of Norman Wells | TSX:ACO.Y | ATCO Ltd |
| 11/05/2011 | 22:38 | Marketwired Canada | ATCO to Provide Site Services at Sunrise Energy Project | TSX:ACO.Y | ATCO Ltd |
| 11/05/2011 | 14:30 | Marketwired Canada | ATCO Announces Australia Arrangement | TSX:ACO.Y | ATCO Ltd |
| 09/05/2011 | 19:01 | Marketwired Canada | ATCO Ltd. Annual General Meeting | TSX:ACO.Y | ATCO Ltd |
| 29/04/2011 | 14:18 | Marketwired Canada | ATCO Reports First Quarter 2011 Earnings | TSX:ACO.Y | ATCO Ltd |
| 21/04/2011 | 15:01 | Marketwired Canada | ATCO Ltd. to Release First Quarter Results Friday, April 29, 2011 | TSX:ACO.Y | ATCO Ltd |
| 23/03/2011 | 17:02 | Marketwired Canada | ATCO to Supply Rio Tinto Alcan With 1,500-Person Workforce Housing Facility | TSX:ACO.Y | ATCO Ltd |