The following companies may have unusual price changes in trading today, says Bloomberg and Thomson Reuters. Stock symbols are in parentheses, and share prices are from the previous close. The Straits Times Index gained 1.5% to 1,847.98.

Chartered Semiconductor Manufacturing (CSM SP), the world’s third-largest maker of customized chips said it has appointed Ian Chapman-Banks as senior vice-president for worldwide sales and marketing. Chapman-Banks has more than 20 years experience in sales and marketing and was most recently corporate vice president and general manager of Motorola Inc.’s mobile devices division in the Asia Pacific, it said. The stock was unchanged at 13 cents last evening.

Noble Group (NOBL SP), a Hong Kong-based supplier of commodities, had its stock rating lowered to “underperform” from “neutral” at Credit Suisse Group AG, which cited a weak demand outlook for coal and iron ore. The stock rose 3.2% to $1.31 yesterday.

Osim International (OSIM SP), the biggest maker of massage chairs in Asia said its founder and chief executive officer Ron Sim bought 2.7 million shares in the open market yesterday, raising his stake to 59.43%. The stock was unchanged at 9 cents last evening.

Wilmar International (WIL SP), the world’s biggest palm oil trader said it has repurchased and canceled bonds worth US$25 million, equivalent to about 4.2% of its outstanding bonds. The stock fell 0.3% to $3.35 yesterday.

Yanlord Land Group (YLLG SP), the company, a property developer in China, had its share-price target raised to $1.4 from $1.1 at JPMorgan Chase & Co., which has maintained its “neutral” rating. The stock slipped 0.8% to $1.30 last evening.

SingTel (STEL.SI) said the Australian Government had rejected its subsidiary Optus Network Investments’ proposal to roll out and operate a National Broadband Network for Australia.

Nomura upgraded Singapore Exchange (SGXL.SI) to “buy” from “reduce”, saying the stock exchange operator is well-positioned to benefit from a recovery in equity market sentiment.

Fabchem China (FBCH.SI) said yesterday it expects its fourth-quarter profit to be significantly lower compared to last year, citing a decrease in global mining activities and falling ammonium nitrate prices.

EnGro Corporation (ENGR.SI) said yesterday that it is injecting 32 million yuan ($7.1 million) into a joint venture with Hebei Iron & Steel Group Company to build a cement plant, as part of Engro’s expansion plans.