Singapore’s Straits Times Index was little changed at 2,934.10 as of the 12:30 p.m. trading break. The same number of stocks climbed as fell on the 30-member gauge.

Stocks on the measure trade at 15.9 times estimated earnings, compared with about 10 times at the start of 2009, according to data compiled by Bloomberg.

The following shares were among the most active in the market.

Olam International (OLAM SP), a supplier of agricultural commodities, gained 1.9% to $2.76. The company said it agreed to buy 99.5% of Crown Flour Mills, a Nigerian wheat miller, and other assets for US$107.6 million ($149 million).

Qian Hu Corp. (QIAN SP), a supplier of ornamental fish, climbed 2.9% to 17.5 cents. The company said full-year net income in 2009 rose 8.3% from a year earlier to $6.5 million.

Q&M Dental Group Singapore (QNM SP), the operator of dental clinics, advanced 7% to 61.5 cents. The company said it has agreed to buy Hong Kong-based Dental Implant Surgical Centre Ltd. for HK$53.3 million. ($9.54 million).

Singapore Telecommunications (ST SP), Southeast Asia’s biggest telephone company, slipped 1% to $2.99. Morgan Stanley cut the stock to “equal-weight” from “overweight”.

STX Pan Ocean Co. (STX SP), South Korea’s biggest bulk carrier, gained 1.1% to $16.20. The company said it plans to invest US$200 million ($278 million) in ships this year. It will receive 17 new vessels in 2010.

Thomson Medical Centre (THOM SP), a hospital operator, added 1.5% to 70 cents. The company said first-quarter net income climbed 24% from a year ago to $3.53 million.