SINGAPORE (Reuters) - Small and mid-cap companies such as Blumont Group, LionGold Corp and Asiasons Capital were among the most actively traded stocks by volume in Singapore on Tuesday, with the broader index little changed.

The FT ST midcap index gained 0.2 per cent, led by LionGold, ARA Asset Management and Blumont, while Asiasons led the FT ST Small Cap index.

Shares in LionGold and Asiasons jumped more than 10 per cent to intra-day highs of $0.24 and $0.167 respectively, while Blumont advanced as much as 7 per cent to $0.137.

The benchmark Straits Times Index eased 0.1 per cent to 3,204.73 in sluggish trading, while the MSCI's broadest index of Asia-Pacific shares outside Japan fell 0.4 per cent.

Shares of ARA Asset Management rose as much as 8.6 per cent to their four-month high of $1.90 after the real estate fund manager announced Straits Trading Company is buying a 20.1 per cent stake in the company.

Shares of Straits Trading rose as much as 5.6 per cent to $3.80, their highest in almost six weeks.