Nov. 2 (Bloomberg) -- Shares of the following companies may have unusual moves in Canadian trading. Stock symbols are in parentheses.

The Standard & Poor’s/TSX Composite Index fell 164.47 points, or 1.5 percent, to 10,910.75 on Oct. 30.

Air Canada (AC/B): Canada’s largest airline had its rating increased to “buy” from “hold” by analyst David Tyerman of Genuity Capital Markets. Tyerman is the only analyst of nine in a Bloomberg survey who has a “buy” rating on the company.

Atco Ltd. (ACO/X CN): The holding company for utilities and energy assets said it earned 92 cents a share, excluding certain items, in the third quarter, beating the average estimate of analysts surveyed by Bloomberg by 37 percent.

Cameco Corp. (CCO CN): The mining company and power producer said it earned 26 cents a share in the third quarter, excluding certain items, missing the average analyst estimate by 20 percent. The company increased its 2009 forecasts for fuel- services production and electricity revenue while cutting its forecast for gold production.

Domtar Corp. (UFS CN): North America’s largest maker of paper for copiers and envelopes had its rating increased to “overweight” from “neutral” by analysts at JPMorgan Chase & Co. and Raymond James Financial Inc. and to “top pick” from “outperform” by analyst Paul Quinn of Royal Bank of Canada. Domtar announced third-quarter earnings Oct. 30 that, excluding certain items, surpassed the average analyst estimate fivefold.

Pacific Rubiales Energy Corp. (PRE CN): The oil producer with operations in Colombia announced an $853 million capital- expenditure program that it said will double production next year.

Research In Motion Ltd. (RIM CN): The BlackBerry maker had its rating reduced to “sell” from “buy” by analyst Jim Suvam of Citigroup Inc., who cited the impact of competing smart phones, especially Motorola Inc. phones using Google Inc.’s Android operating system.

Telus Corp. (T CN): Canadian Industry Minister Tony Clement said he is reviewing a regulator’s decision to block potential Telus competitor Globalive Wireless Management from offering service in Canada. Shares of Telus, Canada’s second-largest wireless carrier, rose 3.5 percent Oct. 30 after the Canadian Radio-television and Telecommunications Commission said Globalive doesn’t meet domestic-ownership requirements.

To contact the reporter on this story: Matt Walcoff in Toronto at mwalcoff1@bloomberg.net.

Last Updated: November 2, 2009 08:52 EST